[libc++][PSTL][NFC] clang-format files

[philnik]

Rebased

[philnik]

Rebased

[philnik]

Rebased

[philnik]

Rebased

[philnik]

Try to fix CI

[philnik]

Try to fix CI

[philnik]

Rebased

[philnik]

Rebasex

[ldionne]

LGTM but make sure to get a green CI run after rebasing everything!

[philnik]

• Rebased
• Try to fix CI

[philnik]

Try to fix CI

[philnik]

Re-add numeric_impl.h and internal/utils.h back to the ingore_list
They should be formatted, but the generator isn't happy for some reason. I'll try to find out why later.

libcxx/include/pstl/internal/algorithm_fwd.h

 #include <iterator>
 #include <type_traits>
 #include <utility>
 
 #include "pstl_config.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace __internal
-{
+namespace __pstl {
+namespace __internal {
 
 //------------------------------------------------------------------------
 // any_of
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Pred>
-bool
-__brick_any_of(const _ForwardIterator, const _ForwardIterator, _Pred,
+bool __brick_any_of(const _ForwardIterator,
+                    const _ForwardIterator,
+                    _Pred,
                     /*__is_vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator, class _Pred>
-bool
-__brick_any_of(const _RandomAccessIterator, const _RandomAccessIterator, _Pred,
+bool __brick_any_of(const _RandomAccessIterator,
+                    const _RandomAccessIterator,
+                    _Pred,
                     /*__is_vector=*/std::true_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Pred>
-bool
-__pattern_any_of(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Pred) noexcept;
+bool __pattern_any_of(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Pred) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Pred>
-bool
-__pattern_any_of(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Pred);
+bool __pattern_any_of(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Pred);
 
 //------------------------------------------------------------------------
 // walk1 (pseudo)
 //
 // walk1 evaluates f(x) for each dereferenced value x drawn from [first,last)
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Function>
-void __brick_walk1(_ForwardIterator, _ForwardIterator, _Function,
+void __brick_walk1(_ForwardIterator,
+                   _ForwardIterator,
+                   _Function,
                    /*vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator, class _Function>
-void __brick_walk1(_RandomAccessIterator, _RandomAccessIterator, _Function,
+void __brick_walk1(_RandomAccessIterator,
+                   _RandomAccessIterator,
+                   _Function,
                    /*vector=*/std::true_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Function>
-void
-__pattern_walk1(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Function) noexcept;
+void __pattern_walk1(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Function) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Function>
-void
-__pattern_walk1(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Function);
+void __pattern_walk1(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Function);
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Brick>
-void
-__pattern_walk_brick(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Brick) noexcept;
+void __pattern_walk_brick(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Brick) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Brick>
-void
-__pattern_walk_brick(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                     _Brick);
+void __pattern_walk_brick(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Brick);
 
 //------------------------------------------------------------------------
 // walk1_n
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Size, class _Function>
-_ForwardIterator __brick_walk1_n(_ForwardIterator, _Size, _Function,
-                                 /*_IsVectorTag=*/std::false_type);
+_ForwardIterator __brick_walk1_n(
+    _ForwardIterator,
+    _Size,
+    _Function,
 
 template <class _RandomAccessIterator, class _DifferenceType, class _Function>
-_RandomAccessIterator __brick_walk1_n(_RandomAccessIterator, _DifferenceType, _Function,
-                                      /*vectorTag=*/std::true_type) noexcept;
+_RandomAccessIterator __brick_walk1_n(
+    _RandomAccessIterator,
+    _DifferenceType,
+    _Function,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Function>
-_ForwardIterator
-__pattern_walk1_n(_Tag, _ExecutionPolicy&&, _ForwardIterator, _Size, _Function) noexcept;
+_ForwardIterator __pattern_walk1_n(_Tag, _ExecutionPolicy&&, _ForwardIterator, _Size, _Function) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Function>
 _RandomAccessIterator
 __pattern_walk1_n(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _Size, _Function);
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Brick>
-_ForwardIterator
-__pattern_walk_brick_n(_Tag, _ExecutionPolicy&&, _ForwardIterator, _Size, _Brick) noexcept;
+_ForwardIterator __pattern_walk_brick_n(_Tag, _ExecutionPolicy&&, _ForwardIterator, _Size, _Brick) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Brick>
 _RandomAccessIterator
 __pattern_walk_brick_n(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _Size, _Brick);
 
 //------------------------------------------------------------------------
 // walk2 (pseudo)
 //
 // walk2 evaluates f(x,y) for deferenced values (x,y) drawn from [first1,last1) and [first2,...)
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _Function>
-_ForwardIterator2 __brick_walk2(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _Function,
-                                /*vector=*/std::false_type) noexcept;
+_ForwardIterator2 __brick_walk2(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _Function,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Function>
-_RandomAccessIterator2 __brick_walk2(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2, _Function,
-                                     /*vector=*/std::true_type) noexcept;
+_RandomAccessIterator2 __brick_walk2(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _Function,
 
 template <class _ForwardIterator1, class _Size, class _ForwardIterator2, class _Function>
-_ForwardIterator2 __brick_walk2_n(_ForwardIterator1, _Size, _ForwardIterator2, _Function,
-                                  /*vector=*/std::false_type) noexcept;
+_ForwardIterator2 __brick_walk2_n(
+    _ForwardIterator1,
+    _Size,
+    _ForwardIterator2,
+    _Function,
 
 template <class _RandomAccessIterator1, class _Size, class _RandomAccessIterator2, class _Function>
-_RandomAccessIterator2 __brick_walk2_n(_RandomAccessIterator1, _Size, _RandomAccessIterator2, _Function,
-                                       /*vector=*/std::true_type) noexcept;
+_RandomAccessIterator2 __brick_walk2_n(
+    _RandomAccessIterator1,
+    _Size,
+    _RandomAccessIterator2,
+    _Function,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Function>
 _ForwardIterator2
 __pattern_walk2(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _Function) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Function>
-_RandomAccessIterator2
-__pattern_walk2(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                _RandomAccessIterator2, _Function);
+_RandomAccessIterator2 __pattern_walk2(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _Function);
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _Size, class _ForwardIterator2,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _Size,
+          class _ForwardIterator2,
           class _Function>
 _ForwardIterator2
 __pattern_walk2_n(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _Size, _ForwardIterator2, _Function) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _Size,
-          class _RandomAccessIterator2, class _Function>
-_RandomAccessIterator2
-__pattern_walk2_n(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _Size, _RandomAccessIterator2,
-                  _Function);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _Size,
+          class _RandomAccessIterator2,
+          class _Function>
+_RandomAccessIterator2 __pattern_walk2_n(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _Size, _RandomAccessIterator2, _Function);
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Brick>
-_ForwardIterator2
-__pattern_walk2_brick(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                      _Brick) noexcept;
+_ForwardIterator2 __pattern_walk2_brick(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _Brick) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Brick>
-_RandomAccessIterator2
-__pattern_walk2_brick(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                      _RandomAccessIterator2, _Brick);
+_RandomAccessIterator2 __pattern_walk2_brick(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _Brick);
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _Size, class _ForwardIterator2,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _Size,
+          class _ForwardIterator2,
           class _Brick>
 _ForwardIterator2
 __pattern_walk2_brick_n(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _Size, _ForwardIterator2, _Brick) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _Size,
-          class _RandomAccessIterator2, class _Brick>
-_RandomAccessIterator2
-__pattern_walk2_brick_n(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _Size,
-                        _RandomAccessIterator2, _Brick);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _Size,
+          class _RandomAccessIterator2,
+          class _Brick>
+_RandomAccessIterator2 __pattern_walk2_brick_n(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _Size, _RandomAccessIterator2, _Brick);
 
 //------------------------------------------------------------------------
 // walk3 (pseudo)
 //
 // walk3 evaluates f(x,y,z) for (x,y,z) drawn from [first1,last1), [first2,...), [first3,...)
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator3, class _Function>
-_ForwardIterator3 __brick_walk3(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator3, _Function,
-                                /*vector=*/std::false_type) noexcept;
+_ForwardIterator3 __brick_walk3(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator3,
+    _Function,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3, class _Function>
-_RandomAccessIterator3 __brick_walk3(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                     _RandomAccessIterator3, _Function,
-                                     /*vector=*/std::true_type) noexcept;
+_RandomAccessIterator3 __brick_walk3(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator3,
+    _Function,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator3,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator3,
           class _Function>
-_ForwardIterator3
-__pattern_walk3(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator3,
-                _Function) noexcept;
+_ForwardIterator3 __pattern_walk3(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator3,
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _RandomAccessIterator3, class _Function>
-_RandomAccessIterator3
-__pattern_walk3(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                _RandomAccessIterator2, _RandomAccessIterator3, _Function);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
+          class _Function>
+_RandomAccessIterator3 __pattern_walk3(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator3,
+    _Function);
 
 //------------------------------------------------------------------------
 // equal
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool __brick_equal(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _BinaryPredicate,
+bool __brick_equal(_ForwardIterator1,
+                   _ForwardIterator1,
+                   _ForwardIterator2,
+                   _BinaryPredicate,
                    /* is_vector = */ std::false_type) noexcept;
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-bool __brick_equal(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2, _BinaryPredicate,
+bool __brick_equal(_RandomAccessIterator1,
+                   _RandomAccessIterator1,
+                   _RandomAccessIterator2,
+                   _BinaryPredicate,
                    /* is_vector = */ std::true_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool
-__pattern_equal(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                _BinaryPredicate) noexcept;
+bool __pattern_equal(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _BinaryPredicate) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-bool
-__pattern_equal(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                _RandomAccessIterator2, _BinaryPredicate);
+bool __pattern_equal(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _BinaryPredicate);
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool __brick_equal(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2, _BinaryPredicate,
+bool __brick_equal(_ForwardIterator1,
+                   _ForwardIterator1,
+                   _ForwardIterator2,
+                   _ForwardIterator2,
+                   _BinaryPredicate,
                    /* is_vector = */ std::false_type) noexcept;
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-bool __brick_equal(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2, _RandomAccessIterator2,
-                   _BinaryPredicate, /* is_vector = */ std::true_type) noexcept;
+bool __brick_equal(_RandomAccessIterator1,
+                   _RandomAccessIterator1,
+                   _RandomAccessIterator2,
+                   _RandomAccessIterator2,
+                   _BinaryPredicate,
+                   /* is_vector = */ std::true_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool
-__pattern_equal(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                _BinaryPredicate) noexcept;
+bool __pattern_equal(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-bool
-__pattern_equal(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                _RandomAccessIterator2, _RandomAccessIterator2, _BinaryPredicate);
+bool __pattern_equal(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _BinaryPredicate);
 
 //------------------------------------------------------------------------
 // find_if
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Predicate>
-_ForwardIterator __brick_find_if(_ForwardIterator, _ForwardIterator, _Predicate,
-                                 /*is_vector=*/std::false_type) noexcept;
+_ForwardIterator __brick_find_if(
+    _ForwardIterator,
+    _ForwardIterator,
+    _Predicate,
 
 template <class _RandomAccessIterator, class _Predicate>
-_RandomAccessIterator __brick_find_if(_RandomAccessIterator, _RandomAccessIterator, _Predicate,
-                                      /*is_vector=*/std::true_type) noexcept;
+_RandomAccessIterator __brick_find_if(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Predicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
-_ForwardIterator
-__pattern_find_if(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Predicate) noexcept;
+_ForwardIterator __pattern_find_if(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Predicate) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Predicate>
-_RandomAccessIterator
-__pattern_find_if(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                  _Predicate);
+_RandomAccessIterator __pattern_find_if(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Predicate);
 
 //------------------------------------------------------------------------
 // find_end
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1 __brick_find_end(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                                   _BinaryPredicate,
-                                   /*__is_vector=*/std::false_type) noexcept;
+_ForwardIterator1 __brick_find_end(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator1 __brick_find_end(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                        _RandomAccessIterator2, _BinaryPredicate,
-                                        /*__is_vector=*/std::true_type) noexcept;
+_RandomAccessIterator1 __brick_find_end(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _BinaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__pattern_find_end(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                   _BinaryPredicate) noexcept;
+_ForwardIterator1 __pattern_find_end(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-_RandomAccessIterator1
-__pattern_find_end(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                   _RandomAccessIterator2, _RandomAccessIterator2, _BinaryPredicate) noexcept;
+_RandomAccessIterator1 __pattern_find_end(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _BinaryPredicate) noexcept;
 
 //------------------------------------------------------------------------
 // find_first_of
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1 __brick_find_first_of(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                                        _BinaryPredicate,
-                                        /*__is_vector=*/std::false_type) noexcept;
+_ForwardIterator1 __brick_find_first_of(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator1 __brick_find_first_of(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                             _RandomAccessIterator2, _BinaryPredicate,
-                                             /*__is_vector=*/std::true_type) noexcept;
+_RandomAccessIterator1 __brick_find_first_of(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _BinaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__pattern_find_first_of(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                        _ForwardIterator2, _BinaryPredicate) noexcept;
+_ForwardIterator1 __pattern_find_first_of(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _BinaryPredicate) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-_RandomAccessIterator1
-__pattern_find_first_of(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                        _RandomAccessIterator2, _RandomAccessIterator2, _BinaryPredicate) noexcept;
+_RandomAccessIterator1 __pattern_find_first_of(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _BinaryPredicate) noexcept;
 
 //------------------------------------------------------------------------
 // search
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1 __brick_search(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                                 _BinaryPredicate,
-                                 /*vector=*/std::false_type) noexcept;
+_ForwardIterator1 __brick_search(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator1 __brick_search(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                      _RandomAccessIterator2, _BinaryPredicate,
-                                      /*vector=*/std::true_type) noexcept;
+_RandomAccessIterator1 __brick_search(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _BinaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__pattern_search(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                 _BinaryPredicate) noexcept;
+_ForwardIterator1 __pattern_search(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-_RandomAccessIterator1
-__pattern_search(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                 _RandomAccessIterator2, _RandomAccessIterator2, _BinaryPredicate) noexcept;
+_RandomAccessIterator1 __pattern_search(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _BinaryPredicate) noexcept;
 
 //------------------------------------------------------------------------
 // search_n
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
-_ForwardIterator
-__brick_search_n(_ForwardIterator, _ForwardIterator, _Size, const _Tp&, _BinaryPredicate,
-                 /*vector=*/std::false_type) noexcept;
+_ForwardIterator __brick_search_n(
+    _ForwardIterator,
+    _ForwardIterator,
+    _Size,
+    const _Tp&,
+    _BinaryPredicate,
 
 template <class _RandomAccessIterator, class _Size, class _Tp, class _BinaryPredicate>
-_RandomAccessIterator
-__brick_search_n(_RandomAccessIterator, _RandomAccessIterator, _Size, const _Tp&, _BinaryPredicate,
-                 /*vector=*/std::true_type) noexcept;
+_RandomAccessIterator __brick_search_n(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Size,
+    const _Tp&,
+    _BinaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
-_ForwardIterator
-__pattern_search_n(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Size, const _Tp&,
-                   _BinaryPredicate) noexcept;
+_ForwardIterator __pattern_search_n(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Size, const _Tp&, _BinaryPredicate) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Tp,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _Size,
+          class _Tp,
           class _BinaryPredicate>
-_RandomAccessIterator
-__pattern_search_n(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Size,
-                   const _Tp&, _BinaryPredicate) noexcept;
+_RandomAccessIterator __pattern_search_n(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Size,
+    const _Tp&,
+    _BinaryPredicate) noexcept;
 
 //------------------------------------------------------------------------
 // copy_n
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Size, class _OutputIterator>
-_OutputIterator __brick_copy_n(_ForwardIterator, _Size, _OutputIterator,
+_OutputIterator __brick_copy_n(_ForwardIterator,
+                               _Size,
+                               _OutputIterator,
                                /*vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator, class _Size, class _OutputIterator>
-_OutputIterator __brick_copy_n(_RandomAccessIterator, _Size, _OutputIterator,
+_OutputIterator __brick_copy_n(_RandomAccessIterator,
+                               _Size,
+                               _OutputIterator,
                                /*vector=*/std::true_type) noexcept;
 
 //------------------------------------------------------------------------
 // copy
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator>
-_OutputIterator __brick_copy(_ForwardIterator, _ForwardIterator, _OutputIterator,
+_OutputIterator __brick_copy(_ForwardIterator,
+                             _ForwardIterator,
+                             _OutputIterator,
                              /*vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator, class _OutputIterator>
-_OutputIterator __brick_copy(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator,
+_OutputIterator __brick_copy(_RandomAccessIterator,
+                             _RandomAccessIterator,
+                             _OutputIterator,
                              /*vector=*/std::true_type) noexcept;
 
 //------------------------------------------------------------------------
 // move
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator>
-_OutputIterator __brick_move(_ForwardIterator, _ForwardIterator, _OutputIterator,
+_OutputIterator __brick_move(_ForwardIterator,
+                             _ForwardIterator,
+                             _OutputIterator,
                              /*vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator, class _OutputIterator>
-_OutputIterator __brick_move(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator,
+_OutputIterator __brick_move(_RandomAccessIterator,
+                             _RandomAccessIterator,
+                             _OutputIterator,
                              /*vector=*/std::true_type) noexcept;
 
 //------------------------------------------------------------------------
 // swap_ranges
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _OutputIterator>
-_OutputIterator __brick_swap_ranges(_ForwardIterator, _ForwardIterator, _OutputIterator,
-                                    /*vector=*/std::false_type) noexcept;
+_OutputIterator __brick_swap_ranges(
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator,
 
 template <class _RandomAccessIterator, class _OutputIterator>
-_OutputIterator __brick_swap_ranges(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator,
-                                    /*vector=*/std::true_type) noexcept;
+_OutputIterator __brick_swap_ranges(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
 
 //------------------------------------------------------------------------
 // copy_if
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator, class _UnaryPredicate>
-_OutputIterator __brick_copy_if(_ForwardIterator, _ForwardIterator, _OutputIterator, _UnaryPredicate,
-                                /*vector=*/std::false_type) noexcept;
+_OutputIterator __brick_copy_if(
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator,
+    _UnaryPredicate,
 
 template <class _RandomAccessIterator, class _OutputIterator, class _UnaryPredicate>
-_OutputIterator __brick_copy_if(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator, _UnaryPredicate,
-                                /*vector=*/std::true_type) noexcept;
+_OutputIterator __brick_copy_if(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _UnaryPredicate,
 
 template <class _DifferenceType, class _ForwardIterator, class _UnaryPredicate>
-std::pair<_DifferenceType, _DifferenceType>
-__brick_calc_mask_1(_ForwardIterator, _ForwardIterator, bool* __restrict, _UnaryPredicate,
-                    /*vector=*/std::false_type) noexcept;
+std::pair<_DifferenceType, _DifferenceType> __brick_calc_mask_1(
+    _ForwardIterator,
+    _ForwardIterator,
+    bool* __restrict,
+    _UnaryPredicate,
 template <class _DifferenceType, class _RandomAccessIterator, class _UnaryPredicate>
-std::pair<_DifferenceType, _DifferenceType>
-__brick_calc_mask_1(_RandomAccessIterator, _RandomAccessIterator, bool* __restrict, _UnaryPredicate,
-                    /*vector=*/std::true_type) noexcept;
+std::pair<_DifferenceType, _DifferenceType> __brick_calc_mask_1(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    bool* __restrict,
+    _UnaryPredicate,
 
 template <class _ForwardIterator, class _OutputIterator>
-void
-__brick_copy_by_mask(_ForwardIterator, _ForwardIterator, _OutputIterator, bool*,
-                     /*vector=*/std::false_type) noexcept;
+void __brick_copy_by_mask(
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator,
+    bool*,
 
 template <class _RandomAccessIterator, class _OutputIterator>
-void
-__brick_copy_by_mask(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator, bool* __restrict,
-                     /*vector=*/std::true_type) noexcept;
+void __brick_copy_by_mask(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    bool* __restrict,
 
 template <class _ForwardIterator, class _OutputIterator1, class _OutputIterator2>
-void
-__brick_partition_by_mask(_ForwardIterator, _ForwardIterator, _OutputIterator1, _OutputIterator2, bool*,
-                          /*vector=*/std::false_type) noexcept;
+void __brick_partition_by_mask(
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator1,
+    _OutputIterator2,
+    bool*,
 
 template <class _RandomAccessIterator, class _OutputIterator1, class _OutputIterator2>
-void
-__brick_partition_by_mask(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator1, _OutputIterator2, bool*,
-                          /*vector=*/std::true_type) noexcept;
+void __brick_partition_by_mask(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator1,
+    _OutputIterator2,
+    bool*,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _UnaryPredicate>
-_OutputIterator
-__pattern_copy_if(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator,
-                  _UnaryPredicate) noexcept;
+_OutputIterator __pattern_copy_if(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator, _UnaryPredicate) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator,
           class _UnaryPredicate>
-_OutputIterator
-__pattern_copy_if(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                  _OutputIterator, _UnaryPredicate);
+_OutputIterator __pattern_copy_if(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _UnaryPredicate);
 
 //------------------------------------------------------------------------
 // count
 //------------------------------------------------------------------------
 
 template <class _RandomAccessIterator, class _Predicate>
-typename std::iterator_traits<_RandomAccessIterator>::difference_type
-    __brick_count(_RandomAccessIterator, _RandomAccessIterator, _Predicate,
-                  /* is_vector = */ std::true_type) noexcept;
+typename std::iterator_traits<_RandomAccessIterator>::difference_type __brick_count(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Predicate,
 
 template <class _ForwardIterator, class _Predicate>
-typename std::iterator_traits<_ForwardIterator>::difference_type
-    __brick_count(_ForwardIterator, _ForwardIterator, _Predicate,
-                  /* is_vector = */ std::false_type) noexcept;
+typename std::iterator_traits<_ForwardIterator>::difference_type __brick_count(
+    _ForwardIterator,
+    _ForwardIterator,
+    _Predicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
 typename std::iterator_traits<_ForwardIterator>::difference_type
 __pattern_count(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Predicate) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Predicate>
-typename std::iterator_traits<_RandomAccessIterator>::difference_type
-__pattern_count(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                _Predicate);
+typename std::iterator_traits<_RandomAccessIterator>::difference_type __pattern_count(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Predicate);
 
 //------------------------------------------------------------------------
 // unique
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _BinaryPredicate>
-_ForwardIterator __brick_unique(_ForwardIterator, _ForwardIterator, _BinaryPredicate,
-                                /*is_vector=*/std::false_type) noexcept;
+_ForwardIterator __brick_unique(
+    _ForwardIterator,
+    _ForwardIterator,
+    _BinaryPredicate,
 
 template <class _RandomAccessIterator, class _BinaryPredicate>
-_RandomAccessIterator __brick_unique(_RandomAccessIterator, _RandomAccessIterator, _BinaryPredicate,
-                                     /*is_vector=*/std::true_type) noexcept;
+_RandomAccessIterator __brick_unique(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _BinaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>
 _ForwardIterator
 __pattern_unique(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _BinaryPredicate) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _BinaryPredicate>
-_RandomAccessIterator
-__pattern_unique(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                 _BinaryPredicate) noexcept;
+_RandomAccessIterator __pattern_unique(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
 
 //------------------------------------------------------------------------
 // unique_copy
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class OutputIterator, class _BinaryPredicate>
-OutputIterator __brick_unique_copy(_ForwardIterator, _ForwardIterator, OutputIterator, _BinaryPredicate,
-                                   /*vector=*/std::false_type) noexcept;
+OutputIterator __brick_unique_copy(
+    _ForwardIterator,
+    _ForwardIterator,
+    OutputIterator,
+    _BinaryPredicate,
 
 template <class _RandomAccessIterator, class _OutputIterator, class _BinaryPredicate>
-_OutputIterator __brick_unique_copy(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator, _BinaryPredicate,
-                                    /*vector=*/std::true_type) noexcept;
+_OutputIterator __brick_unique_copy(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _BinaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _BinaryPredicate>
-_OutputIterator
-__pattern_unique_copy(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator,
-                      _BinaryPredicate) noexcept;
+_OutputIterator __pattern_unique_copy(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator, _BinaryPredicate) noexcept;
 
 template <class _ExecutionPolicy, class _DifferenceType, class _RandomAccessIterator, class _BinaryPredicate>
-_DifferenceType
-__brick_calc_mask_2(_RandomAccessIterator, _RandomAccessIterator, bool* __restrict, _BinaryPredicate,
-                    /*vector=*/std::false_type) noexcept;
+_DifferenceType __brick_calc_mask_2(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    bool* __restrict,
+    _BinaryPredicate,
 
 template <class _DifferenceType, class _RandomAccessIterator, class _BinaryPredicate>
-_DifferenceType
-__brick_calc_mask_2(_RandomAccessIterator, _RandomAccessIterator, bool* __restrict, _BinaryPredicate,
-                    /*vector=*/std::true_type) noexcept;
+_DifferenceType __brick_calc_mask_2(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    bool* __restrict,
+    _BinaryPredicate,
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator,
           class _BinaryPredicate>
-_OutputIterator
-__pattern_unique_copy(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                      _OutputIterator, _BinaryPredicate);
+_OutputIterator __pattern_unique_copy(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _BinaryPredicate);
 
 //------------------------------------------------------------------------
 // reverse
 //------------------------------------------------------------------------
 
 template <class _BidirectionalIterator>
-void __brick_reverse(_BidirectionalIterator, _BidirectionalIterator,
+void __brick_reverse(_BidirectionalIterator,
+                     _BidirectionalIterator,
                      /*__is_vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator>
-void __brick_reverse(_RandomAccessIterator, _RandomAccessIterator,
+void __brick_reverse(_RandomAccessIterator,
+                     _RandomAccessIterator,
                      /*__is_vector=*/std::true_type) noexcept;
 
 template <class _BidirectionalIterator>
-void __brick_reverse(_BidirectionalIterator, _BidirectionalIterator, _BidirectionalIterator,
+void __brick_reverse(_BidirectionalIterator,
+                     _BidirectionalIterator,
+                     _BidirectionalIterator,
                      /*is_vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator>
-void __brick_reverse(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator,
+void __brick_reverse(_RandomAccessIterator,
+                     _RandomAccessIterator,
+                     _RandomAccessIterator,
                      /*is_vector=*/std::true_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator>
-void
-__pattern_reverse(_Tag, _ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator) noexcept;
+void __pattern_reverse(_Tag, _ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator>
-void
-__pattern_reverse(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator);
+void __pattern_reverse(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator);
 
 //------------------------------------------------------------------------
 // reverse_copy
 //------------------------------------------------------------------------
 
 template <class _BidirectionalIterator, class _OutputIterator>
-_OutputIterator __brick_reverse_copy(_BidirectionalIterator, _BidirectionalIterator, _OutputIterator,
-                                     /*is_vector=*/std::false_type) noexcept;
+_OutputIterator __brick_reverse_copy(
+    _BidirectionalIterator,
+    _BidirectionalIterator,
+    _OutputIterator,
 
 template <class _RandomAccessIterator, class _OutputIterator>
-_OutputIterator __brick_reverse_copy(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator,
-                                     /*is_vector=*/std::true_type) noexcept;
+_OutputIterator __brick_reverse_copy(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator, class _OutputIterator>
-_OutputIterator
-__pattern_reverse_copy(_Tag, _ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator,
-                       _OutputIterator) noexcept;
+_OutputIterator __pattern_reverse_copy(
+    _Tag, _ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator, _OutputIterator) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator>
-_OutputIterator
-__pattern_reverse_copy(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                       _OutputIterator);
+_OutputIterator __pattern_reverse_copy(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _OutputIterator);
 
 //------------------------------------------------------------------------
 // rotate
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator>
-_ForwardIterator __brick_rotate(_ForwardIterator, _ForwardIterator, _ForwardIterator,
-                                /*is_vector=*/std::false_type) noexcept;
+_ForwardIterator __brick_rotate(
+    _ForwardIterator,
+    _ForwardIterator,
+    _ForwardIterator,
 
 template <class _RandomAccessIterator>
-_RandomAccessIterator __brick_rotate(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator,
-                                     /*is_vector=*/std::true_type) noexcept;
+_RandomAccessIterator __brick_rotate(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator>
 _ForwardIterator
 __pattern_rotate(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _ForwardIterator) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator>
-_RandomAccessIterator
-__pattern_rotate(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                 _RandomAccessIterator);
+_RandomAccessIterator __pattern_rotate(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator);
 
 //------------------------------------------------------------------------
 // rotate_copy
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator>
-_OutputIterator __brick_rotate_copy(_ForwardIterator, _ForwardIterator, _ForwardIterator, _OutputIterator,
-                                    /*__is_vector=*/std::false_type) noexcept;
+_OutputIterator __brick_rotate_copy(
+    _ForwardIterator,
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator,
 
 template <class _RandomAccessIterator, class _OutputIterator>
-_OutputIterator __brick_rotate_copy(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator,
-                                    _OutputIterator,
-                                    /*__is_vector=*/std::true_type) noexcept;
+_OutputIterator __brick_rotate_copy(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator>
-_OutputIterator
-__pattern_rotate_copy(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _ForwardIterator,
-                      _OutputIterator) noexcept;
+_OutputIterator __pattern_rotate_copy(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _ForwardIterator, _OutputIterator) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator>
-_OutputIterator
-__pattern_rotate_copy(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                      _RandomAccessIterator, _OutputIterator);
+_OutputIterator __pattern_rotate_copy(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator);
 
 //------------------------------------------------------------------------
 // is_partitioned
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _UnaryPredicate>
-bool __brick_is_partitioned(_ForwardIterator, _ForwardIterator, _UnaryPredicate,
+bool __brick_is_partitioned(_ForwardIterator,
+                            _ForwardIterator,
+                            _UnaryPredicate,
                             /*is_vector=*/std::false_type) noexcept;
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-bool __brick_is_partitioned(_RandomAccessIterator, _RandomAccessIterator, _UnaryPredicate,
+bool __brick_is_partitioned(_RandomAccessIterator,
+                            _RandomAccessIterator,
+                            _UnaryPredicate,
                             /*is_vector=*/std::true_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
-bool
-__pattern_is_partitioned(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _UnaryPredicate) noexcept;
+bool __pattern_is_partitioned(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _UnaryPredicate) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-bool
-__pattern_is_partitioned(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                         _UnaryPredicate);
+bool __pattern_is_partitioned(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _UnaryPredicate);
 
 //------------------------------------------------------------------------
 // partition
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _UnaryPredicate>
-_ForwardIterator __brick_partition(_ForwardIterator, _ForwardIterator, _UnaryPredicate,
-                                   /*is_vector=*/std::false_type) noexcept;
+_ForwardIterator __brick_partition(
+    _ForwardIterator,
+    _ForwardIterator,
+    _UnaryPredicate,
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator __brick_partition(_RandomAccessIterator, _RandomAccessIterator, _UnaryPredicate,
-                                        /*is_vector=*/std::true_type) noexcept;
+_RandomAccessIterator __brick_partition(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _UnaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 _ForwardIterator
 __pattern_partition(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _UnaryPredicate) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__pattern_partition(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                    _UnaryPredicate);
+_RandomAccessIterator __pattern_partition(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _UnaryPredicate);
 
 //------------------------------------------------------------------------
 // stable_partition
 //------------------------------------------------------------------------
 
 template <class _BidirectionalIterator, class _UnaryPredicate>
-_BidirectionalIterator __brick_stable_partition(_BidirectionalIterator, _BidirectionalIterator, _UnaryPredicate,
-                                                /*__is_vector=*/std::false_type) noexcept;
+_BidirectionalIterator __brick_stable_partition(
+    _BidirectionalIterator,
+    _BidirectionalIterator,
+    _UnaryPredicate,
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator __brick_stable_partition(_RandomAccessIterator, _RandomAccessIterator, _UnaryPredicate,
-                                               /*__is_vector=*/std::true_type) noexcept;
+_RandomAccessIterator __brick_stable_partition(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _UnaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator, class _UnaryPredicate>
-_BidirectionalIterator
-__pattern_stable_partition(_Tag, _ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator,
-                           _UnaryPredicate) noexcept;
+_BidirectionalIterator __pattern_stable_partition(
+    _Tag, _ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator, _UnaryPredicate) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__pattern_stable_partition(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                           _UnaryPredicate) noexcept;
+_RandomAccessIterator __pattern_stable_partition(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
 
 //------------------------------------------------------------------------
 // partition_copy
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator1, class _OutputIterator2, class _UnaryPredicate>
-std::pair<_OutputIterator1, _OutputIterator2>
-    __brick_partition_copy(_ForwardIterator, _ForwardIterator, _OutputIterator1, _OutputIterator2, _UnaryPredicate,
-                           /*is_vector=*/std::false_type) noexcept;
+std::pair<_OutputIterator1, _OutputIterator2> __brick_partition_copy(
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator1,
+    _OutputIterator2,
+    _UnaryPredicate,
 
 template <class _RandomAccessIterator, class _OutputIterator1, class _OutputIterator2, class _UnaryPredicate>
-std::pair<_OutputIterator1, _OutputIterator2> __brick_partition_copy(_RandomAccessIterator, _RandomAccessIterator,
-                                                                     _OutputIterator1, _OutputIterator2,
-                                                                     _UnaryPredicate,
-                                                                     /*is_vector=*/std::true_type) noexcept;
+std::pair<_OutputIterator1, _OutputIterator2> __brick_partition_copy(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator1,
+    _OutputIterator2,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator1, class _OutputIterator2,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _OutputIterator1,
+          class _OutputIterator2,
+          class _UnaryPredicate>
+std::pair<_OutputIterator1, _OutputIterator2> __pattern_partition_copy(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator1,
+    _OutputIterator2,
+    _UnaryPredicate) noexcept;
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator1,
+          class _OutputIterator2,
           class _UnaryPredicate>
-std::pair<_OutputIterator1, _OutputIterator2>
-__pattern_partition_copy(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator1,
-                         _OutputIterator2, _UnaryPredicate) noexcept;
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator1,
-          class _OutputIterator2, class _UnaryPredicate>
-std::pair<_OutputIterator1, _OutputIterator2>
-__pattern_partition_copy(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                         _OutputIterator1, _OutputIterator2, _UnaryPredicate);
+std::pair<_OutputIterator1, _OutputIterator2> __pattern_partition_copy(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator1,
+    _OutputIterator2,
+    _UnaryPredicate);
 
 //------------------------------------------------------------------------
 // sort
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare, class _IsMoveConstructible>
-void
-__pattern_sort(_Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare,
-               _IsMoveConstructible) noexcept;
+void __pattern_sort(
+    _Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare, _IsMoveConstructible) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_sort(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare,
+void __pattern_sort(__parallel_tag<_IsVector>,
+                    _ExecutionPolicy&&,
+                    _RandomAccessIterator,
+                    _RandomAccessIterator,
+                    _Compare,
                     /*is_move_constructible=*/std::true_type);
 
 //------------------------------------------------------------------------
 // stable_sort
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_stable_sort(_Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare) noexcept;
+void __pattern_stable_sort(_Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_stable_sort(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                      _Compare);
+void __pattern_stable_sort(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare);
 
 //------------------------------------------------------------------------
 // partial_sort
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_partial_sort(_Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator,
-                       _Compare) noexcept;
+void __pattern_partial_sort(
+    _Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_partial_sort(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                       _RandomAccessIterator, _Compare);
+void __pattern_partial_sort(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare);
 
 //------------------------------------------------------------------------
 // partial_sort_copy
 //------------------------------------------------------------------------
 
-template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Compare>
-_RandomAccessIterator2
-__pattern_partial_sort_copy(_Tag, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                            _RandomAccessIterator2, _RandomAccessIterator2, _Compare) noexcept;
+_RandomAccessIterator2 __pattern_partial_sort_copy(
+    _Tag,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _Compare) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Compare>
-_RandomAccessIterator2
-__pattern_partial_sort_copy(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1,
-                            _RandomAccessIterator1, _RandomAccessIterator2, _RandomAccessIterator2, _Compare);
+_RandomAccessIterator2 __pattern_partial_sort_copy(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _Compare);
 
 //------------------------------------------------------------------------
 // adjacent_find
 //------------------------------------------------------------------------
 
 template <class _RandomAccessIterator, class _BinaryPredicate>
-_RandomAccessIterator
-__brick_adjacent_find(_RandomAccessIterator, _RandomAccessIterator, _BinaryPredicate,
-                      /* IsVector = */ std::true_type, bool) noexcept;
+_RandomAccessIterator __brick_adjacent_find(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _BinaryPredicate,
+    /* IsVector = */ std::true_type,
+    bool) noexcept;
 
 template <class _ForwardIterator, class _BinaryPredicate>
-_ForwardIterator
-__brick_adjacent_find(_ForwardIterator, _ForwardIterator, _BinaryPredicate,
-                      /* IsVector = */ std::false_type, bool) noexcept;
+_ForwardIterator __brick_adjacent_find(
+    _ForwardIterator,
+    _ForwardIterator,
+    _BinaryPredicate,
+    /* IsVector = */ std::false_type,
+    bool) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>
 _ForwardIterator
 __pattern_adjacent_find(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _BinaryPredicate, bool) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _BinaryPredicate>
-_RandomAccessIterator
-__pattern_adjacent_find(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                        _BinaryPredicate, bool);
+_RandomAccessIterator __pattern_adjacent_find(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _BinaryPredicate,
+    bool);
 
 //------------------------------------------------------------------------
 // nth_element
 //------------------------------------------------------------------------
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_nth_element(_Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator,
-                      _Compare) noexcept;
+void __pattern_nth_element(
+    _Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_nth_element(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                      _RandomAccessIterator, _Compare) noexcept;
+void __pattern_nth_element(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare) noexcept;
 
 //------------------------------------------------------------------------
 // fill, fill_n
 //------------------------------------------------------------------------
 template <class _RandomAccessIterator, class _Tp>
-void
-__brick_fill(_RandomAccessIterator, _RandomAccessIterator, const _Tp&,
+void __brick_fill(_RandomAccessIterator,
+                  _RandomAccessIterator,
+                  const _Tp&,
                   /* __is_vector = */ std::true_type) noexcept;
 
 template <class _ForwardIterator, class _Tp>
-void
-__brick_fill(_ForwardIterator, _ForwardIterator, const _Tp&,
+void __brick_fill(_ForwardIterator,
+                  _ForwardIterator,
+                  const _Tp&,
                   /* __is_vector = */ std::false_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Tp>
-void
-__pattern_fill(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, const _Tp&) noexcept;
+void __pattern_fill(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, const _Tp&) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Tp>
 _RandomAccessIterator
 __pattern_fill(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, const _Tp&);
 
 template <class _RandomAccessIterator, class _Size, class _Tp>
 _RandomAccessIterator
-__brick_fill_n(_RandomAccessIterator, _Size, const _Tp&,
+__brick_fill_n(_RandomAccessIterator,
+               _Size,
+               const _Tp&,
                /* __is_vector = */ std::true_type) noexcept;
 
 template <class _OutputIterator, class _Size, class _Tp>
 _OutputIterator
-__brick_fill_n(_OutputIterator, _Size, const _Tp&,
+__brick_fill_n(_OutputIterator,
+               _Size,
+               const _Tp&,
                /* __is_vector = */ std::false_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _OutputIterator, class _Size, class _Tp>
-_OutputIterator
-__pattern_fill_n(_Tag, _ExecutionPolicy&&, _OutputIterator, _Size, const _Tp&) noexcept;
+_OutputIterator __pattern_fill_n(_Tag, _ExecutionPolicy&&, _OutputIterator, _Size, const _Tp&) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Tp>
 _RandomAccessIterator
 __pattern_fill_n(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _Size, const _Tp&);
 
 //------------------------------------------------------------------------
 // generate, generate_n
 //------------------------------------------------------------------------
 
 template <class _RandomAccessIterator, class _Generator>
-void __brick_generate(_RandomAccessIterator, _RandomAccessIterator, _Generator,
+void __brick_generate(_RandomAccessIterator,
+                      _RandomAccessIterator,
+                      _Generator,
                       /* is_vector = */ std::true_type) noexcept;
 
 template <class _ForwardIterator, class _Generator>
-void __brick_generate(_ForwardIterator, _ForwardIterator, _Generator,
+void __brick_generate(_ForwardIterator,
+                      _ForwardIterator,
+                      _Generator,
                       /* is_vector = */ std::false_type) noexcept;
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Generator>
-void
-__pattern_generate(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Generator) noexcept;
+void __pattern_generate(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Generator) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Generator>
-_RandomAccessIterator
-__pattern_generate(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                   _Generator);
+_RandomAccessIterator __pattern_generate(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Generator);
 
 template <class _RandomAccessIterator, class Size, class _Generator>
-_RandomAccessIterator __brick_generate_n(_RandomAccessIterator, Size, _Generator,
-                                         /* is_vector = */ std::true_type) noexcept;
+_RandomAccessIterator __brick_generate_n(
+    _RandomAccessIterator,
+    Size,
+    _Generator,
 
 template <class OutputIterator, class Size, class _Generator>
-OutputIterator __brick_generate_n(OutputIterator, Size, _Generator,
-                                  /* is_vector = */ std::false_type) noexcept;
+OutputIterator __brick_generate_n(
+    OutputIterator,
+    Size,
+    _Generator,
 
 template <class _Tag, class _ExecutionPolicy, class OutputIterator, class Size, class _Generator>
-OutputIterator
-__pattern_generate_n(_Tag, _ExecutionPolicy&&, OutputIterator, Size, _Generator) noexcept;
+OutputIterator __pattern_generate_n(_Tag, _ExecutionPolicy&&, OutputIterator, Size, _Generator) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class Size, class _Generator>
 _RandomAccessIterator
 __pattern_generate_n(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, Size, _Generator);
 
 //------------------------------------------------------------------------
 // remove
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _UnaryPredicate>
-_ForwardIterator __brick_remove_if(_ForwardIterator, _ForwardIterator, _UnaryPredicate,
-                                   /* __is_vector = */ std::false_type) noexcept;
+_ForwardIterator __brick_remove_if(
+    _ForwardIterator,
+    _ForwardIterator,
+    _UnaryPredicate,
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator __brick_remove_if(_RandomAccessIterator, _RandomAccessIterator, _UnaryPredicate,
-                                        /* __is_vector = */ std::true_type) noexcept;
+_RandomAccessIterator __brick_remove_if(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _UnaryPredicate,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 _ForwardIterator
 __pattern_remove_if(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _UnaryPredicate) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__pattern_remove_if(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                    _UnaryPredicate) noexcept;
+_RandomAccessIterator __pattern_remove_if(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
 
 //------------------------------------------------------------------------
 // merge
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_merge(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                              _OutputIterator, _Compare,
-                              /* __is_vector = */ std::false_type) noexcept;
+_OutputIterator __brick_merge(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_merge(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                              _RandomAccessIterator2, _OutputIterator, _Compare,
-                              /* __is_vector = */ std::true_type) noexcept;
+_OutputIterator __brick_merge(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_merge(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                _OutputIterator, _Compare) noexcept;
+_OutputIterator __pattern_merge(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _OutputIterator, class _Compare>
-_OutputIterator
-__pattern_merge(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                _RandomAccessIterator2, _RandomAccessIterator2, _OutputIterator, _Compare);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _OutputIterator,
+          class _Compare>
+_OutputIterator __pattern_merge(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare);
 
 //------------------------------------------------------------------------
 // inplace_merge
 //------------------------------------------------------------------------
 
 template <class _BidirectionalIterator, class _Compare>
-void __brick_inplace_merge(_BidirectionalIterator, _BidirectionalIterator, _BidirectionalIterator, _Compare,
-                           /* __is_vector = */ std::false_type) noexcept;
+void __brick_inplace_merge(
+    _BidirectionalIterator,
+    _BidirectionalIterator,
+    _BidirectionalIterator,
+    _Compare,
 
 template <class _RandomAccessIterator, class _Compare>
-void __brick_inplace_merge(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare,
-                           /* __is_vector = */ std::true_type) noexcept;
+void __brick_inplace_merge(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare,
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator, class _Compare>
-void
-__pattern_inplace_merge(_Tag, _ExecutionPolicy&&, _BidirectionalIterator, _BidirectionalIterator,
-                        _BidirectionalIterator, _Compare) noexcept;
+void __pattern_inplace_merge(
+    _Tag,
+    _ExecutionPolicy&&,
+    _BidirectionalIterator,
+    _BidirectionalIterator,
+    _BidirectionalIterator,
+    _Compare) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_inplace_merge(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                        _RandomAccessIterator, _Compare);
+void __pattern_inplace_merge(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare);
 
 //------------------------------------------------------------------------
 // includes
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-bool
-__pattern_includes(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                   _Compare) noexcept;
+bool __pattern_includes(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Compare>
-bool
-__pattern_includes(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                   _RandomAccessIterator2, _RandomAccessIterator2, _Compare);
+bool __pattern_includes(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _Compare);
 
 //------------------------------------------------------------------------
 // set_union
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_union(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                                  _OutputIterator, _Compare,
-                                  /*__is_vector=*/std::false_type) noexcept;
+_OutputIterator __brick_set_union(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_union(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                  _RandomAccessIterator2, _OutputIterator, _Compare,
-                                  /*__is_vector=*/std::true_type) noexcept;
+_OutputIterator __brick_set_union(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_union(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                    _ForwardIterator2, _OutputIterator, _Compare) noexcept;
+_OutputIterator __pattern_set_union(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _OutputIterator, class _Compare>
-_OutputIterator
-__pattern_set_union(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                    _RandomAccessIterator2, _RandomAccessIterator2, _OutputIterator, _Compare);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _OutputIterator,
+          class _Compare>
+_OutputIterator __pattern_set_union(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare);
 
 //------------------------------------------------------------------------
 // set_intersection
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_intersection(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                                         _OutputIterator, _Compare,
-                                         /*__is_vector=*/std::false_type) noexcept;
+_OutputIterator __brick_set_intersection(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_intersection(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                         _RandomAccessIterator2, _OutputIterator, _Compare,
-                                         /*__is_vector=*/std::true_type) noexcept;
+_OutputIterator __brick_set_intersection(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_intersection(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                           _ForwardIterator2, _OutputIterator, _Compare) noexcept;
+_OutputIterator __pattern_set_intersection(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _OutputIterator, class _Compare>
-_OutputIterator
-__pattern_set_intersection(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1,
-                           _RandomAccessIterator1, _RandomAccessIterator2, _RandomAccessIterator2, _OutputIterator,
-                           _Compare);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _OutputIterator,
+          class _Compare>
+_OutputIterator __pattern_set_intersection(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
 
 //------------------------------------------------------------------------
 // set_difference
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_difference(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                                       _OutputIterator, _Compare,
-                                       /*__is_vector=*/std::false_type) noexcept;
+_OutputIterator __brick_set_difference(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_difference(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                       _RandomAccessIterator2, _OutputIterator, _Compare,
-                                       /*__is_vector=*/std::true_type) noexcept;
+_OutputIterator __brick_set_difference(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_difference(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                         _ForwardIterator2, _OutputIterator, _Compare) noexcept;
+_OutputIterator __pattern_set_difference(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _OutputIterator, class _Compare>
-_OutputIterator
-__pattern_set_difference(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                         _RandomAccessIterator2, _RandomAccessIterator2, _OutputIterator, _Compare);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _OutputIterator,
+          class _Compare>
+_OutputIterator __pattern_set_difference(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare);
 
 //------------------------------------------------------------------------
 // set_symmetric_difference
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_symmetric_difference(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                                                 _ForwardIterator2, _OutputIterator, _Compare,
-                                                 /*__is_vector=*/std::false_type) noexcept;
+_OutputIterator __brick_set_symmetric_difference(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _OutputIterator, class _Compare>
-_OutputIterator __brick_set_symmetric_difference(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                                 _RandomAccessIterator2, _OutputIterator, _Compare,
-                                                 /*__is_vector=*/std::true_type) noexcept;
+_OutputIterator __brick_set_symmetric_difference(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_symmetric_difference(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                                   _ForwardIterator2, _OutputIterator, _Compare) noexcept;
+_OutputIterator __pattern_set_symmetric_difference(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _OutputIterator,
+    _Compare) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _OutputIterator, class _Compare>
-_OutputIterator
-__pattern_set_symmetric_difference(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1,
-                                   _RandomAccessIterator1, _RandomAccessIterator2, _RandomAccessIterator2,
-                                   _OutputIterator, _Compare);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _OutputIterator,
+          class _Compare>
+_OutputIterator __pattern_set_symmetric_difference(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _OutputIterator,
+    _Compare);
 
 //------------------------------------------------------------------------
 // is_heap_until
 //------------------------------------------------------------------------
 
 template <class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator __brick_is_heap_until(_RandomAccessIterator, _RandomAccessIterator, _Compare,
-                                            /* __is_vector = */ std::false_type) noexcept;
+_RandomAccessIterator __brick_is_heap_until(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare,
 
 template <class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator __brick_is_heap_until(_RandomAccessIterator, _RandomAccessIterator, _Compare,
-                                            /* __is_vector = */ std::true_type) noexcept;
+_RandomAccessIterator __brick_is_heap_until(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare,
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 _RandomAccessIterator
 __pattern_is_heap_until(_Tag, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare) noexcept;
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator
-__pattern_is_heap_until(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                        _Compare) noexcept;
+_RandomAccessIterator __pattern_is_heap_until(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare) noexcept;
 
 //------------------------------------------------------------------------
 // min_element
 //------------------------------------------------------------------------
 
 template <typename _ForwardIterator, typename _Compare>
-_ForwardIterator __brick_min_element(_ForwardIterator, _ForwardIterator, _Compare,
-                                     /* __is_vector = */ std::false_type) noexcept;
+_ForwardIterator __brick_min_element(
+    _ForwardIterator,
+    _ForwardIterator,
+    _Compare,
 
 template <typename _RandomAccessIterator, typename _Compare>
-_RandomAccessIterator __brick_min_element(_RandomAccessIterator, _RandomAccessIterator, _Compare,
-                                          /* __is_vector = */ std::true_type) noexcept;
+_RandomAccessIterator __brick_min_element(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare,
 
 template <typename _Tag, typename _ExecutionPolicy, typename _ForwardIterator, typename _Compare>
-_ForwardIterator
-__pattern_min_element(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Compare) noexcept;
+_ForwardIterator __pattern_min_element(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Compare) noexcept;
 
 template <typename _IsVector, typename _ExecutionPolicy, typename _RandomAccessIterator, typename _Compare>
-_RandomAccessIterator
-__pattern_min_element(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                      _Compare);
+_RandomAccessIterator __pattern_min_element(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare);
 
 //------------------------------------------------------------------------
 // minmax_element
 //------------------------------------------------------------------------
 
 template <typename _ForwardIterator, typename _Compare>
-std::pair<_ForwardIterator, _ForwardIterator> __brick_minmax_element(_ForwardIterator, _ForwardIterator, _Compare,
-                                                                     /* __is_vector = */ std::false_type) noexcept;
+std::pair<_ForwardIterator, _ForwardIterator> __brick_minmax_element(
+    _ForwardIterator,
+    _ForwardIterator,
+    _Compare,
 
 template <typename _RandomAccessIterator, typename _Compare>
-std::pair<_RandomAccessIterator, _RandomAccessIterator>
-    __brick_minmax_element(_RandomAccessIterator, _RandomAccessIterator, _Compare,
-                           /* __is_vector = */ std::true_type) noexcept;
+std::pair<_RandomAccessIterator, _RandomAccessIterator> __brick_minmax_element(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Compare,
 
 template <typename _Tag, typename _ExecutionPolicy, typename _ForwardIterator, typename _Compare>
 std::pair<_ForwardIterator, _ForwardIterator>
 __pattern_minmax_element(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Compare) noexcept;
 
 template <typename _IsVector, typename _ExecutionPolicy, typename _RandomAccessIterator, typename _Compare>
-std::pair<_RandomAccessIterator, _RandomAccessIterator>
-__pattern_minmax_element(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                         _Compare);
+std::pair<_RandomAccessIterator, _RandomAccessIterator> __pattern_minmax_element(
+    __parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare);
 
 //------------------------------------------------------------------------
 // mismatch
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
-std::pair<_ForwardIterator1, _ForwardIterator2> __brick_mismatch(_ForwardIterator1, _ForwardIterator1,
-                                                                 _ForwardIterator2, _ForwardIterator2, _Predicate,
-                                                                 /* __is_vector = */ std::false_type) noexcept;
+std::pair<_ForwardIterator1, _ForwardIterator2> __brick_mismatch(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _Predicate,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Predicate>
-std::pair<_RandomAccessIterator1, _RandomAccessIterator2>
-    __brick_mismatch(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2, _RandomAccessIterator2,
-                     _Predicate,
-                     /* __is_vector = */ std::true_type) noexcept;
+std::pair<_RandomAccessIterator1, _RandomAccessIterator2> __brick_mismatch(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
-std::pair<_ForwardIterator1, _ForwardIterator2>
-__pattern_mismatch(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                   _Predicate) noexcept;
+std::pair<_ForwardIterator1, _ForwardIterator2> __pattern_mismatch(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Predicate>
-std::pair<_RandomAccessIterator1, _RandomAccessIterator2>
-__pattern_mismatch(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1, _RandomAccessIterator1,
-                   _RandomAccessIterator2, _RandomAccessIterator2, _Predicate) noexcept;
+std::pair<_RandomAccessIterator1, _RandomAccessIterator2> __pattern_mismatch(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _Predicate) noexcept;
 
 //------------------------------------------------------------------------
 // lexicographical_compare
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-bool __brick_lexicographical_compare(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator2,
-                                     _Compare,
-                                     /* __is_vector = */ std::false_type) noexcept;
+bool __brick_lexicographical_compare(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Compare>
-bool __brick_lexicographical_compare(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2,
-                                     _RandomAccessIterator2, _Compare,
-                                     /* __is_vector = */ std::true_type) noexcept;
+bool __brick_lexicographical_compare(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
+    _Compare,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-bool
-__pattern_lexicographical_compare(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2,
-                                  _ForwardIterator2, _Compare) noexcept;
+bool __pattern_lexicographical_compare(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _ForwardIterator2,
+    _Compare) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Compare>
-bool
-__pattern_lexicographical_compare(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1,
-                                  _RandomAccessIterator1, _RandomAccessIterator2, _RandomAccessIterator2,
-                                  _Compare) noexcept;
+bool __pattern_lexicographical_compare(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _RandomAccessIterator2,
 
 } // namespace __internal
 } // namespace __pstl
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_ALGORITHM_FWD_H */

libcxx/include/pstl/internal/algorithm_impl.h

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _PSTL_ALGORITHM_IMPL_H
 #define _PSTL_ALGORITHM_IMPL_H
 
+#include <algorithm>
+#include <functional>
 #include <iterator>
 #include <type_traits>
 #include <utility>
-#include <functional>
-#include <algorithm>
 
 #include "execution_impl.h"
 #include "memory_impl.h"
 #include "parallel_backend.h"
 #include "parallel_backend_utils.h"
 #include "parallel_impl.h"
 #include "pstl_config.h"
 #include "unseq_backend_simd.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace __internal
-{
+namespace __pstl {
+namespace __internal {
 
 //------------------------------------------------------------------------
 // any_of
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Pred>
-bool
-__brick_any_of(const _ForwardIterator __first, const _ForwardIterator __last, _Pred __pred,
-               /*__is_vector=*/std::false_type) noexcept
-{
-    return std::any_of(__first, __last, __pred);
+bool __brick_any_of(const _ForwardIterator __first,
+                    const _ForwardIterator __last,
+                    _Pred __pred,
+                    /*__is_vector=*/std::false_type) noexcept {
 };
 
 template <class _RandomAccessIterator, class _Pred>
-bool
-__brick_any_of(const _RandomAccessIterator __first, const _RandomAccessIterator __last, _Pred __pred,
-               /*__is_vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_or(__first, __last - __first, __pred);
+bool __brick_any_of(const _RandomAccessIterator __first,
+                    const _RandomAccessIterator __last,
+                    _Pred __pred,
+                    /*__is_vector=*/std::true_type) noexcept {
 };
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Pred>
-bool
-__pattern_any_of(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Pred __pred) noexcept
-{
-    return __internal::__brick_any_of(__first, __last, __pred, typename _Tag::__is_vector{});
+bool __pattern_any_of(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Pred __pred) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Pred>
-bool
-__pattern_any_of(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                 _RandomAccessIterator __last, _Pred __pred)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+bool __pattern_any_of(__parallel_tag<_IsVector> __tag,
+                      _ExecutionPolicy&& __exec,
+                      _RandomAccessIterator __first,
+                      _RandomAccessIterator __last,
+                      _Pred __pred) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __internal::__parallel_or(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                             [__pred](_RandomAccessIterator __i, _RandomAccessIterator __j)
-                                             { return __internal::__brick_any_of(__i, __j, __pred, _IsVector{}); });
-        });
+  return __internal::__except_handler([&]() {
+    return __internal::__parallel_or(
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [__pred](_RandomAccessIterator __i, _RandomAccessIterator __j) {
+          return __internal::__brick_any_of(__i, __j, __pred, _IsVector{});
+        });
 }
 
 // [alg.foreach]
 // for_each_n with no policy
 
 template <class _ForwardIterator, class _Size, class _Function>
-_ForwardIterator
-__for_each_n_it_serial(_ForwardIterator __first, _Size __n, _Function __f)
-{
-    for (; __n > 0; ++__first, --__n)
-        __f(__first);
-    return __first;
+_ForwardIterator __for_each_n_it_serial(_ForwardIterator __first, _Size __n, _Function __f) {
 }
 
 //------------------------------------------------------------------------
 // walk1 (pseudo)
 //
 // walk1 evaluates f(x) for each dereferenced value x drawn from [first,last)
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _Function>
-void
-__brick_walk1(_ForwardIterator __first, _ForwardIterator __last, _Function __f, /*vector=*/std::false_type) noexcept
-{
-    std::for_each(__first, __last, __f);
+void __brick_walk1(
+    _ForwardIterator __first, _ForwardIterator __last, _Function __f, /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _Function>
-void
-__brick_walk1(_RandomAccessIterator __first, _RandomAccessIterator __last, _Function __f,
-              /*vector=*/std::true_type) noexcept
-{
-    __unseq_backend::__simd_walk_1(__first, __last - __first, __f);
+void __brick_walk1(_RandomAccessIterator __first,
+                   _RandomAccessIterator __last,
+                   _Function __f,
+                   /*vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Function>
-void
-__pattern_walk1(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Function __f) noexcept
-{
-    __internal::__brick_walk1(__first, __last, __f, typename _Tag::__is_vector{});
+void __pattern_walk1(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Function __f) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Function>
-void
-__pattern_walk1(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                _RandomAccessIterator __last, _Function __f)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+void __pattern_walk1(__parallel_tag<_IsVector> __tag,
+                     _ExecutionPolicy&& __exec,
+                     _RandomAccessIterator __first,
+                     _RandomAccessIterator __last,
+                     _Function __f) {
 
-    __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                          [__f](_RandomAccessIterator __i, _RandomAccessIterator __j)
-                                          { __internal::__brick_walk1(__i, __j, __f, _IsVector{}); });
-        });
+  __internal::__except_handler([&]() {
+    __par_backend::__parallel_for(
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [__f](_RandomAccessIterator __i, _RandomAccessIterator __j) {
+          __internal::__brick_walk1(__i, __j, __f, _IsVector{});
+        });
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Brick>
-void
-__pattern_walk_brick(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                     _Brick __brick) noexcept
-{
-    __brick(__first, __last);
+void __pattern_walk_brick(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Brick __brick) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Brick>
-void
-__pattern_walk_brick(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                     _RandomAccessIterator __last, _Brick __brick)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+void __pattern_walk_brick(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Brick __brick) {
 
-    __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                          [__brick](_RandomAccessIterator __i, _RandomAccessIterator __j)
-                                          { __brick(__i, __j); });
-        });
+  __internal::__except_handler([&]() {
+    __par_backend::__parallel_for(
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [__brick](_RandomAccessIterator __i, _RandomAccessIterator __j) { __brick(__i, __j); });
 }
 
 //------------------------------------------------------------------------
 // walk1_n
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _Size, class _Function>
-_ForwardIterator
-__brick_walk1_n(_ForwardIterator __first, _Size __n, _Function __f, /*_IsVectorTag=*/std::false_type)
-{
-    return __internal::__for_each_n_it_serial(__first, __n,
-                                              [&__f](_ForwardIterator __it) { __f(*__it); }); // calling serial version
+_ForwardIterator __brick_walk1_n(_ForwardIterator __first, _Size __n, _Function __f, /*_IsVectorTag=*/std::false_type) {
+  return __internal::__for_each_n_it_serial(__first, __n, [&__f](_ForwardIterator __it) {
+    __f(*__it);
+  }); // calling serial version
 }
 
 template <class _RandomAccessIterator, class _DifferenceType, class _Function>
 _RandomAccessIterator
-__brick_walk1_n(_RandomAccessIterator __first, _DifferenceType __n, _Function __f,
-                /*vectorTag=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_walk_1(__first, __n, __f);
+__brick_walk1_n(_RandomAccessIterator __first,
+                _DifferenceType __n,
+                _Function __f,
+                /*vectorTag=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Function>
 _ForwardIterator
-__pattern_walk1_n(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _Size __n, _Function __f) noexcept
-{
-    return __internal::__brick_walk1_n(__first, __n, __f, typename _Tag::__is_vector{});
+__pattern_walk1_n(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _Size __n, _Function __f) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Function>
-_RandomAccessIterator
-__pattern_walk1_n(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first, _Size __n,
-                  _Function __f)
-{
-    __internal::__pattern_walk1(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __first + __n, __f);
+_RandomAccessIterator __pattern_walk1_n(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _Size __n,
+    _Function __f) {
 
-    return __first + __n;
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Brick>
 _ForwardIterator
-__pattern_walk_brick_n(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _Size __n, _Brick __brick) noexcept
-{
-    return __brick(__first, __n);
+__pattern_walk_brick_n(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _Size __n, _Brick __brick) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Brick>
-_RandomAccessIterator
-__pattern_walk_brick_n(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                       _Size __n, _Brick __brick)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_walk_brick_n(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _Size __n,
+    _Brick __brick) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __first + __n,
-                [__brick](_RandomAccessIterator __i, _RandomAccessIterator __j) { __brick(__i, __j - __i); });
-            return __first + __n;
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __first + __n,
 }
 
 //------------------------------------------------------------------------
 // walk2 (pseudo)
 //
 // walk2 evaluates f(x,y) for deferenced values (x,y) drawn from [first1,last1) and [first2,...)
 //------------------------------------------------------------------------
 template <class _ForwardIterator1, class _ForwardIterator2, class _Function>
 _ForwardIterator2
-__brick_walk2(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _Function __f,
-              /*vector=*/std::false_type) noexcept
-{
-    for (; __first1 != __last1; ++__first1, ++__first2)
-        __f(*__first1, *__first2);
-    return __first2;
+__brick_walk2(_ForwardIterator1 __first1,
+              _ForwardIterator1 __last1,
+              _ForwardIterator2 __first2,
+              _Function __f,
+              /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Function>
 _RandomAccessIterator2
-__brick_walk2(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
+__brick_walk2(_RandomAccessIterator1 __first1,
+              _RandomAccessIterator1 __last1,
+              _RandomAccessIterator2 __first2,
               _Function __f,
-              /*vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_walk_2(__first1, __last1 - __first1, __first2, __f);
+              /*vector=*/std::true_type) noexcept {
 }
 
 template <class _ForwardIterator1, class _Size, class _ForwardIterator2, class _Function>
-_ForwardIterator2
-__brick_walk2_n(_ForwardIterator1 __first1, _Size __n, _ForwardIterator2 __first2, _Function __f,
-                /*vector=*/std::false_type) noexcept
-{
-    for (; __n > 0; --__n, ++__first1, ++__first2)
-        __f(*__first1, *__first2);
-    return __first2;
+_ForwardIterator2 __brick_walk2_n(
+    _ForwardIterator1 __first1,
+    _Size __n,
+    _ForwardIterator2 __first2,
+    _Function __f,
+    /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _Size, class _RandomAccessIterator2, class _Function>
-_RandomAccessIterator2
-__brick_walk2_n(_RandomAccessIterator1 __first1, _Size __n, _RandomAccessIterator2 __first2, _Function __f,
-                /*vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_walk_2(__first1, __n, __first2, __f);
+_RandomAccessIterator2 __brick_walk2_n(
+    _RandomAccessIterator1 __first1,
+    _Size __n,
+    _RandomAccessIterator2 __first2,
+    _Function __f,
+    /*vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Function>
-_ForwardIterator2
-__pattern_walk2(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                _ForwardIterator2 __first2, _Function __f) noexcept
-{
-    return __internal::__brick_walk2(__first1, __last1, __first2, __f, typename _Tag::__is_vector{});
+_ForwardIterator2 __pattern_walk2(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Function __f) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Function>
-_RandomAccessIterator2
-__pattern_walk2(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _Function __f)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator2 __pattern_walk2(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _Function __f) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                [__f, __first1, __first2](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-                { __internal::__brick_walk2(__i, __j, __first2 + (__i - __first1), __f, _IsVector{}); });
-            return __first2 + (__last1 - __first1);
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        [__f, __first1, __first2](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+          __internal::__brick_walk2(__i, __j, __first2 + (__i - __first1), __f, _IsVector{});
+        });
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _Size, class _ForwardIterator2,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _Size,
+          class _ForwardIterator2,
           class _Function>
-_ForwardIterator2
-__pattern_walk2_n(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _Size __n, _ForwardIterator2 __first2,
-                  _Function __f) noexcept
-{
-    return __internal::__brick_walk2_n(__first1, __n, __first2, __f, typename _Tag::__is_vector{});
+_ForwardIterator2 __pattern_walk2_n(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _Size __n,
+    _ForwardIterator2 __first2,
+    _Function __f) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _Size,
-          class _RandomAccessIterator2, class _Function>
-_RandomAccessIterator2
-__pattern_walk2_n(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                  _Size __n, _RandomAccessIterator2 __first2, _Function __f)
-{
-    return __internal::__pattern_walk2(__tag, std::forward<_ExecutionPolicy>(__exec), __first1, __first1 + __n,
-                                       __first2, __f);
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _Size,
+          class _RandomAccessIterator2,
+          class _Function>
+_RandomAccessIterator2 __pattern_walk2_n(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _Size __n,
+    _RandomAccessIterator2 __first2,
+    _Function __f) {
+  return __internal::__pattern_walk2(
+      __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __first1 + __n, __first2, __f);
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Brick>
-_ForwardIterator2
-__pattern_walk2_brick(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                      _ForwardIterator2 __first2, _Brick __brick) noexcept
-{
-    return __brick(__first1, __last1, __first2);
+_ForwardIterator2 __pattern_walk2_brick(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Brick __brick) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Brick>
-_RandomAccessIterator2
-__pattern_walk2_brick(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                      _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _Brick __brick)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator2 __pattern_walk2_brick(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _Brick __brick) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                [__first1, __first2, __brick](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-                { __brick(__i, __j, __first2 + (__i - __first1)); });
-            return __first2 + (__last1 - __first1);
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        [__first1, __first2, __brick](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+          __brick(__i, __j, __first2 + (__i - __first1));
+        });
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _Size, class _ForwardIterator2,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _Size,
+          class _ForwardIterator2,
           class _Brick>
-_ForwardIterator2
-__pattern_walk2_brick_n(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _Size __n, _ForwardIterator2 __first2,
-                        _Brick __brick) noexcept
-{
-    return __brick(__first1, __n, __first2);
+_ForwardIterator2 __pattern_walk2_brick_n(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _Size __n,
+    _ForwardIterator2 __first2,
+    _Brick __brick) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _Size,
-          class _RandomAccessIterator2, class _Brick>
-_RandomAccessIterator2
-__pattern_walk2_brick_n(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                        _Size __n, _RandomAccessIterator2 __first2, _Brick __brick)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _Size,
+          class _RandomAccessIterator2,
+          class _Brick>
+_RandomAccessIterator2 __pattern_walk2_brick_n(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _Size __n,
+    _RandomAccessIterator2 __first2,
+    _Brick __brick) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __first1 + __n,
-                [__first1, __first2, __brick](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-                { __brick(__i, __j - __i, __first2 + (__i - __first1)); });
-            return __first2 + __n;
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __first1 + __n,
+        [__first1, __first2, __brick](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+          __brick(__i, __j - __i, __first2 + (__i - __first1));
+        });
 }
 
 //------------------------------------------------------------------------
 // walk3 (pseudo)
 //
 // walk3 evaluates f(x,y,z) for (x,y,z) drawn from [first1,last1), [first2,...), [first3,...)
 //------------------------------------------------------------------------
 template <class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator3, class _Function>
-_ForwardIterator3
-__brick_walk3(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-              _ForwardIterator3 __first3, _Function __f, /*vector=*/std::false_type) noexcept
-{
-    for (; __first1 != __last1; ++__first1, ++__first2, ++__first3)
-        __f(*__first1, *__first2, *__first3);
-    return __first3;
+_ForwardIterator3 __brick_walk3(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator3 __first3,
+    _Function __f,
+    /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3, class _Function>
-_RandomAccessIterator3
-__brick_walk3(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-              _RandomAccessIterator3 __first3, _Function __f, /*vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_walk_3(__first1, __last1 - __first1, __first2, __first3, __f);
+_RandomAccessIterator3 __brick_walk3(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator3 __first3,
+    _Function __f,
+    /*vector=*/std::true_type) noexcept {
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator3,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator3,
           class _Function>
-_ForwardIterator3
-__pattern_walk3(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                _ForwardIterator2 __first2, _ForwardIterator3 __first3, _Function __f) noexcept
-{
-    return __internal::__brick_walk3(__first1, __last1, __first2, __first3, __f, typename _Tag::__is_vector{});
+_ForwardIterator3 __pattern_walk3(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator3 __first3,
+    _Function __f) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _RandomAccessIterator3, class _Function>
-_RandomAccessIterator3
-__pattern_walk3(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _RandomAccessIterator3 __first3,
-                _Function __f)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
+          class _Function>
+_RandomAccessIterator3 __pattern_walk3(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator3 __first3,
+    _Function __f) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                [__f, __first1, __first2, __first3](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
-                    __internal::__brick_walk3(__i, __j, __first2 + (__i - __first1), __first3 + (__i - __first1), __f,
-                                              _IsVector{});
-                });
-            return __first3 + (__last1 - __first1);
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+          __internal::__brick_walk3(
+              __i, __j, __first2 + (__i - __first1), __first3 + (__i - __first1), __f, _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // equal
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool
-__brick_equal(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-              _ForwardIterator2 __last2, _BinaryPredicate __p, /* IsVector = */ std::false_type) noexcept
-{
-    return std::equal(__first1, __last1, __first2, __last2, __p);
+bool __brick_equal(_ForwardIterator1 __first1,
+                   _ForwardIterator1 __last1,
+                   _ForwardIterator2 __first2,
+                   _ForwardIterator2 __last2,
+                   _BinaryPredicate __p,
+                   /* IsVector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-bool
-__brick_equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-              _RandomAccessIterator2 __last2, _BinaryPredicate __p, /* is_vector = */ std::true_type) noexcept
-{
-    if (__last1 - __first1 != __last2 - __first2)
-        return false;
+bool __brick_equal(_RandomAccessIterator1 __first1,
+                   _RandomAccessIterator1 __last1,
+                   _RandomAccessIterator2 __first2,
+                   _RandomAccessIterator2 __last2,
+                   _BinaryPredicate __p,
+                   /* is_vector = */ std::true_type) noexcept {
 
-    return __unseq_backend::__simd_first(__first1, __last1 - __first1, __first2, std::not_fn(__p)).first == __last1;
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool
-__pattern_equal(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                _ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __p) noexcept
-{
-    return __internal::__brick_equal(__first1, __last1, __first2, __last2, __p, typename _Tag::__is_vector{});
+bool __pattern_equal(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _BinaryPredicate __p) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-bool
-__pattern_equal(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                _BinaryPredicate __p)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+bool __pattern_equal(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _BinaryPredicate __p) {
 
-    if (__last1 - __first1 != __last2 - __first2)
-        return false;
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return !__internal::__parallel_or(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                [__first1, __first2, __p](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-                {
-                    return !__internal::__brick_equal(__i, __j, __first2 + (__i - __first1),
-                                                      __first2 + (__j - __first1), __p, _IsVector{});
-                });
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        [__first1, __first2, __p](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+          return !__internal::__brick_equal(
+              __i, __j, __first2 + (__i - __first1), __first2 + (__j - __first1), __p, _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // equal version for sequences with equal length
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool
-__brick_equal(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _BinaryPredicate __p,
-              /* IsVector = */ std::false_type) noexcept
-{
-    return std::equal(__first1, __last1, __first2, __p);
+bool __brick_equal(_ForwardIterator1 __first1,
+                   _ForwardIterator1 __last1,
+                   _ForwardIterator2 __first2,
+                   _BinaryPredicate __p,
+                   /* IsVector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-bool
-__brick_equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-              _BinaryPredicate __p, /* is_vector = */ std::true_type) noexcept
-{
-    return __unseq_backend::__simd_first(__first1, __last1 - __first1, __first2, std::not_fn(__p)).first == __last1;
+bool __brick_equal(_RandomAccessIterator1 __first1,
+                   _RandomAccessIterator1 __last1,
+                   _RandomAccessIterator2 __first2,
+                   _BinaryPredicate __p,
+                   /* is_vector = */ std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-bool
-__pattern_equal(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                _ForwardIterator2 __first2, _BinaryPredicate __p) noexcept
-{
-    return __internal::__brick_equal(__first1, __last1, __first2, __p, typename _Tag::__is_vector{});
+bool __pattern_equal(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _BinaryPredicate __p) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-bool
-__pattern_equal(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _BinaryPredicate __p)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+bool __pattern_equal(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _BinaryPredicate __p) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return !__internal::__parallel_or(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                [__first1, __first2, __p](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-                { return !__internal::__brick_equal(__i, __j, __first2 + (__i - __first1), __p, _IsVector{}); });
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        [__first1, __first2, __p](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+          return !__internal::__brick_equal(__i, __j, __first2 + (__i - __first1), __p, _IsVector{});
+        });
 }
 
 //------------------------------------------------------------------------
 // find_if
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _Predicate>
 _ForwardIterator
-__brick_find_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred,
-                /*is_vector=*/std::false_type) noexcept
-{
-    return std::find_if(__first, __last, __pred);
+__brick_find_if(_ForwardIterator __first,
+                _ForwardIterator __last,
+                _Predicate __pred,
+                /*is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _Predicate>
 _RandomAccessIterator
-__brick_find_if(_RandomAccessIterator __first, _RandomAccessIterator __last, _Predicate __pred,
-                /*is_vector=*/std::true_type) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type _SizeType;
-    return __unseq_backend::__simd_first(
-        __first, _SizeType(0), __last - __first,
-        [&__pred](_RandomAccessIterator __it, _SizeType __i) { return __pred(__it[__i]); });
+__brick_find_if(_RandomAccessIterator __first,
+                _RandomAccessIterator __last,
+                _Predicate __pred,
+                /*is_vector=*/std::true_type) noexcept {
+      __first, _SizeType(0), __last - __first, [&__pred](_RandomAccessIterator __it, _SizeType __i) {
+        return __pred(__it[__i]);
+      });
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
-_ForwardIterator
-__pattern_find_if(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                  _Predicate __pred) noexcept
-{
-    return __internal::__brick_find_if(__first, __last, __pred, typename _Tag::__is_vector{});
+_ForwardIterator __pattern_find_if(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Predicate>
-_RandomAccessIterator
-__pattern_find_if(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                  _RandomAccessIterator __last, _Predicate __pred)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_find_if(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Predicate __pred) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __internal::__parallel_find(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                [__pred](_RandomAccessIterator __i, _RandomAccessIterator __j)
-                { return __internal::__brick_find_if(__i, __j, __pred, _IsVector{}); },
-                std::less<typename std::iterator_traits<_RandomAccessIterator>::difference_type>(),
-                /*is_first=*/true);
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [__pred](_RandomAccessIterator __i, _RandomAccessIterator __j) {
+          return __internal::__brick_find_if(__i, __j, __pred, _IsVector{});
+        },
 }
 
 //------------------------------------------------------------------------
 // find_end
 //------------------------------------------------------------------------
 
 // find the first occurrence of the subsequence [s_first, s_last)
 //   or the  last occurrence of the subsequence in the range [first, last)
 // b_first determines what occurrence we want to find (first or last)
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate, class _IsVector>
-_RandomAccessIterator1
-__find_subrange(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator1 __global_last,
-                _RandomAccessIterator2 __s_first, _RandomAccessIterator2 __s_last, _BinaryPredicate __pred,
-                bool __b_first, _IsVector __is_vector) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator2>::value_type _ValueType;
-    auto __n2 = __s_last - __s_first;
-    if (__n2 < 1)
-    {
-        return __b_first ? __first : __last;
-    }
+_RandomAccessIterator1 __find_subrange(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator1 __global_last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred,
+    bool __b_first,
+    _IsVector __is_vector) noexcept {
+  if (__n2 < 1) {
 
-    auto __n1 = __global_last - __first;
-    if (__n1 < __n2)
-    {
-        return __last;
-    }
+  if (__n1 < __n2) {
 
-    auto __cur = __last;
-    while (__first != __last && (__global_last - __first >= __n2))
-    {
-        // find position of *s_first in [first, last) (it can be start of subsequence)
-        __first = __internal::__brick_find_if(
-            __first, __last, __equal_value_by_pred<_ValueType, _BinaryPredicate>(*__s_first, __pred), __is_vector);
+  while (__first != __last && (__global_last - __first >= __n2)) {
 
-        // if position that was found previously is the start of subsequence
-        // then we can exit the loop (b_first == true) or keep the position
-        // (b_first == false)
-        if (__first != __last && (__global_last - __first >= __n2) &&
-            __internal::__brick_equal(__s_first + 1, __s_last, __first + 1, __pred, __is_vector))
-        {
-            if (__b_first)
-            {
-                return __first;
-            }
-            else
-            {
-                __cur = __first;
-            }
-        }
-        else if (__first == __last)
-        {
-            break;
-        }
-        else
-        {
-        }
+        __internal::__brick_equal(__s_first + 1, __s_last, __first + 1, __pred, __is_vector)) {
+      if (__b_first) {
+      } else {
+    } else if (__first == __last) {
+    } else {
 
-        // in case of b_first == false we try to find new start position
-        // for the next subsequence
-        ++__first;
-    }
-    return __cur;
 }
 
 template <class _RandomAccessIterator, class _Size, class _Tp, class _BinaryPredicate, class _IsVector>
-_RandomAccessIterator
-__find_subrange(_RandomAccessIterator __first, _RandomAccessIterator __last, _RandomAccessIterator __global_last,
-                _Size __count, const _Tp& __value, _BinaryPredicate __pred, _IsVector __is_vector) noexcept
-{
-    if (static_cast<_Size>(__global_last - __first) < __count || __count < 1)
-    {
-        return __last; // According to the standard last shall be returned when count < 1
-    }
+_RandomAccessIterator __find_subrange(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _RandomAccessIterator __global_last,
+    _Size __count,
+    const _Tp& __value,
+    _BinaryPredicate __pred,
+    _IsVector __is_vector) noexcept {
+  if (static_cast<_Size>(__global_last - __first) < __count || __count < 1) {
 
-    auto __unary_pred = __equal_value_by_pred<_Tp, _BinaryPredicate>(__value, __pred);
-    while (__first != __last && (static_cast<_Size>(__global_last - __first) >= __count))
-    {
-        __first = __internal::__brick_find_if(__first, __last, __unary_pred, __is_vector);
+  while (__first != __last && (static_cast<_Size>(__global_last - __first) >= __count)) {
 
-        // check that all of elements in [first+1, first+count) equal to value
-        if (__first != __last && (static_cast<_Size>(__global_last - __first) >= __count) &&
-            !__internal::__brick_any_of(__first + 1, __first + __count, std::not_fn(__unary_pred), __is_vector))
-        {
-            return __first;
-        }
-        else if (__first == __last)
-        {
-            break;
-        }
-        else
-        {
-            ++__first;
-        }
-    }
-    return __last;
+        !__internal::__brick_any_of(__first + 1, __first + __count, std::not_fn(__unary_pred), __is_vector)) {
+    } else if (__first == __last) {
+    } else {
 }
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__brick_find_end(_ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-                 _ForwardIterator2 __s_last, _BinaryPredicate __pred, /*__is_vector=*/std::false_type) noexcept
-{
-    return std::find_end(__first, __last, __s_first, __s_last, __pred);
+_ForwardIterator1 __brick_find_end(
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __s_first,
+    _ForwardIterator2 __s_last,
+    _BinaryPredicate __pred,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator1
-__brick_find_end(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __s_first,
-                 _RandomAccessIterator2 __s_last, _BinaryPredicate __pred, /*__is_vector=*/std::true_type) noexcept
-{
-    return __find_subrange(__first, __last, __last, __s_first, __s_last, __pred, false, std::true_type());
+_RandomAccessIterator1 __brick_find_end(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__pattern_find_end(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                   _ForwardIterator2 __s_first, _ForwardIterator2 __s_last, _BinaryPredicate __pred) noexcept
-{
-    return __internal::__brick_find_end(__first, __last, __s_first, __s_last, __pred, typename _Tag::__is_vector{});
+_ForwardIterator1 __pattern_find_end(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __s_first,
+    _ForwardIterator2 __s_last,
+    _BinaryPredicate __pred) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-_RandomAccessIterator1
-__pattern_find_end(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                   _RandomAccessIterator1 __last, _RandomAccessIterator2 __s_first, _RandomAccessIterator2 __s_last,
-                   _BinaryPredicate __pred) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator1 __pattern_find_end(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred) noexcept {
 
-    if (__last - __first == __s_last - __s_first)
-    {
-        const bool __res = __internal::__pattern_equal(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                       __s_first, __pred);
-        return __res ? __first : __last;
-    }
-    else
-    {
-        return __internal::__except_handler(
-            [&]()
-            {
-                return __internal::__parallel_find(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                    [__last, __s_first, __s_last, __pred](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
-                        return __internal::__find_subrange(__i, __j, __last, __s_first, __s_last, __pred, false,
-                                                           _IsVector{});
-                    },
-                    std::greater<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(),
-                    /*is_first=*/false);
-            });
-    }
+  if (__last - __first == __s_last - __s_first) {
+    const bool __res =
+        __internal::__pattern_equal(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __pred);
+  } else {
+    return __internal::__except_handler([&]() {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __first,
+          __last,
+            return __internal::__find_subrange(__i, __j, __last, __s_first, __s_last, __pred, false, _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // find_first_of
 //------------------------------------------------------------------------
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__brick_find_first_of(_ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-                      _ForwardIterator2 __s_last, _BinaryPredicate __pred, /*__is_vector=*/std::false_type) noexcept
-{
-    return std::find_first_of(__first, __last, __s_first, __s_last, __pred);
+_ForwardIterator1 __brick_find_first_of(
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __s_first,
+    _ForwardIterator2 __s_last,
+    _BinaryPredicate __pred,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator1
-__brick_find_first_of(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __s_first,
-                      _RandomAccessIterator2 __s_last, _BinaryPredicate __pred, /*__is_vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_find_first_of(__first, __last, __s_first, __s_last, __pred);
+_RandomAccessIterator1 __brick_find_first_of(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__pattern_find_first_of(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                        _ForwardIterator2 __s_first, _ForwardIterator2 __s_last, _BinaryPredicate __pred) noexcept
-{
-    return __internal::__brick_find_first_of(__first, __last, __s_first, __s_last, __pred,
-                                             typename _Tag::__is_vector{});
+_ForwardIterator1 __pattern_find_first_of(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __s_first,
+    _ForwardIterator2 __s_last,
+    _BinaryPredicate __pred) noexcept {
+  return __internal::__brick_find_first_of(__first, __last, __s_first, __s_last, __pred, typename _Tag::__is_vector{});
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-_RandomAccessIterator1
-__pattern_find_first_of(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                        _RandomAccessIterator1 __last, _RandomAccessIterator2 __s_first,
-                        _RandomAccessIterator2 __s_last, _BinaryPredicate __pred) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator1 __pattern_find_first_of(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred) noexcept {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __internal::__parallel_find(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                [__s_first, __s_last, __pred](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-                { return __internal::__brick_find_first_of(__i, __j, __s_first, __s_last, __pred, _IsVector{}); },
-                std::less<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(), /*is_first=*/true);
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [__s_first, __s_last, __pred](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+          return __internal::__brick_find_first_of(__i, __j, __s_first, __s_last, __pred, _IsVector{});
+        },
+        std::less<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(),
+        /*is_first=*/true);
 }
 
 //------------------------------------------------------------------------
 // search
 //------------------------------------------------------------------------
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator1
-__brick_search(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __s_first,
-               _RandomAccessIterator2 __s_last, _BinaryPredicate __pred, /*vector=*/std::false_type) noexcept
-{
-    return std::search(__first, __last, __s_first, __s_last, __pred);
+_RandomAccessIterator1 __brick_search(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred,
+    /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator1
-__brick_search(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __s_first,
-               _RandomAccessIterator2 __s_last, _BinaryPredicate __pred, /*vector=*/std::true_type) noexcept
-{
-    return __internal::__find_subrange(__first, __last, __last, __s_first, __s_last, __pred, true, std::true_type());
+_RandomAccessIterator1 __brick_search(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred,
+    /*vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-__pattern_search(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                 _ForwardIterator2 __s_first, _ForwardIterator2 __s_last, _BinaryPredicate __pred) noexcept
-{
-    return __internal::__brick_search(__first, __last, __s_first, __s_last, __pred, typename _Tag::__is_vector{});
+_ForwardIterator1 __pattern_search(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __s_first,
+    _ForwardIterator2 __s_last,
+    _BinaryPredicate __pred) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-_RandomAccessIterator1
-__pattern_search(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                 _RandomAccessIterator1 __last, _RandomAccessIterator2 __s_first, _RandomAccessIterator2 __s_last,
-                 _BinaryPredicate __pred) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator1 __pattern_search(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __s_first,
+    _RandomAccessIterator2 __s_last,
+    _BinaryPredicate __pred) noexcept {
 
-    if (__last - __first == __s_last - __s_first)
-    {
-        const bool __res = __internal::__pattern_equal(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                       __s_first, __pred);
-        return __res ? __first : __last;
-    }
-    else
-    {
-        return __internal::__except_handler(
-            [&]()
-            {
-                return __internal::__parallel_find(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                    [__last, __s_first, __s_last, __pred](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
-                        return __internal::__find_subrange(__i, __j, __last, __s_first, __s_last, __pred, true,
-                                                           _IsVector{});
-                    },
-                    std::less<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(),
-                    /*is_first=*/true);
-            });
-    }
+  if (__last - __first == __s_last - __s_first) {
+    const bool __res =
+        __internal::__pattern_equal(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __pred);
+  } else {
+    return __internal::__except_handler([&]() {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __first,
+          __last,
+            return __internal::__find_subrange(__i, __j, __last, __s_first, __s_last, __pred, true, _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // search_n
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
-_ForwardIterator
-__brick_search_n(_ForwardIterator __first, _ForwardIterator __last, _Size __count, const _Tp& __value,
-                 _BinaryPredicate __pred, /*vector=*/std::false_type) noexcept
-{
-    return std::search_n(__first, __last, __count, __value, __pred);
+_ForwardIterator __brick_search_n(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Size __count,
+    const _Tp& __value,
+    _BinaryPredicate __pred,
+    /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _Size, class _Tp, class _BinaryPredicate>
-_RandomAccessIterator
-__brick_search_n(_RandomAccessIterator __first, _RandomAccessIterator __last, _Size __count, const _Tp& __value,
-                 _BinaryPredicate __pred, /*vector=*/std::true_type) noexcept
-{
-    return __internal::__find_subrange(__first, __last, __last, __count, __value, __pred, std::true_type());
+_RandomAccessIterator __brick_search_n(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Size __count,
+    const _Tp& __value,
+    _BinaryPredicate __pred,
+    /*vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
-_ForwardIterator
-__pattern_search_n(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Size __count,
-                   const _Tp& __value, _BinaryPredicate __pred) noexcept
-{
-    return __internal::__brick_search_n(__first, __last, __count, __value, __pred, typename _Tag::__is_vector{});
+_ForwardIterator __pattern_search_n(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Size __count,
+    const _Tp& __value,
+    _BinaryPredicate __pred) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Tp,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _Size,
+          class _Tp,
           class _BinaryPredicate>
-_RandomAccessIterator
-__pattern_search_n(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                   _RandomAccessIterator __last, _Size __count, const _Tp& __value, _BinaryPredicate __pred) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_search_n(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Size __count,
+    const _Tp& __value,
+    _BinaryPredicate __pred) noexcept {
 
-    if (static_cast<_Size>(__last - __first) == __count)
-    {
-        const bool __result =
-            !__internal::__pattern_any_of(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                          [&__value, &__pred](const _Tp& __val) { return !__pred(__val, __value); });
-        return __result ? __first : __last;
-    }
-    else
-    {
-        return __internal::__except_handler(
-            [&__exec, __first, __last, __count, &__value, __pred]()
-            {
-                return __internal::__parallel_find(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                    [__last, __count, &__value, __pred](_RandomAccessIterator __i, _RandomAccessIterator __j)
-                    { return __internal::__find_subrange(__i, __j, __last, __count, __value, __pred, _IsVector{}); },
-                    std::less<typename std::iterator_traits<_RandomAccessIterator>::difference_type>(),
-                    /*is_first=*/true);
-            });
-    }
+  if (static_cast<_Size>(__last - __first) == __count) {
+    const bool __result = !__internal::__pattern_any_of(
+        __tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, [&__value, &__pred](const _Tp& __val) {
+          return !__pred(__val, __value);
+        });
+  } else {
+    return __internal::__except_handler([&__exec, __first, __last, __count, &__value, __pred]() {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __first,
+          __last,
+          [__last, __count, &__value, __pred](_RandomAccessIterator __i, _RandomAccessIterator __j) {
+            return __internal::__find_subrange(__i, __j, __last, __count, __value, __pred, _IsVector{});
+          },
 }
 
 //------------------------------------------------------------------------
 // copy_n
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Size, class _OutputIterator>
 _OutputIterator
-__brick_copy_n(_ForwardIterator __first, _Size __n, _OutputIterator __result, /*vector=*/std::false_type) noexcept
-{
-    return std::copy_n(__first, __n, __result);
+__brick_copy_n(_ForwardIterator __first, _Size __n, _OutputIterator __result, /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _Size, class _RandomAccessIterator2>
 _RandomAccessIterator2
-__brick_copy_n(_RandomAccessIterator1 __first, _Size __n, _RandomAccessIterator2 __result,
-               /*vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_assign(
-        __first, __n, __result,
-        [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) { *__result = *__first; });
+__brick_copy_n(_RandomAccessIterator1 __first,
+               _Size __n,
+               _RandomAccessIterator2 __result,
+               /*vector=*/std::true_type) noexcept {
+      __first, __n, __result, [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) {
+        *__result = *__first;
+      });
 }
 
 //------------------------------------------------------------------------
 // copy
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _OutputIterator>
 _OutputIterator
-__brick_copy(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result,
-             /*vector=*/std::false_type) noexcept
-{
-    return std::copy(__first, __last, __result);
+__brick_copy(_ForwardIterator __first,
+             _ForwardIterator __last,
+             _OutputIterator __result,
+             /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2>
 _RandomAccessIterator2
-__brick_copy(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-             /*vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_assign(
-        __first, __last - __first, __result,
-        [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) { *__result = *__first; });
+__brick_copy(_RandomAccessIterator1 __first,
+             _RandomAccessIterator1 __last,
+             _RandomAccessIterator2 __result,
+             /*vector=*/std::true_type) noexcept {
+      __first, __last - __first, __result, [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) {
+        *__result = *__first;
+      });
 }
 
 //------------------------------------------------------------------------
 // move
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _OutputIterator>
 _OutputIterator
-__brick_move(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result,
-             /*vector=*/std::false_type) noexcept
-{
-    return std::move(__first, __last, __result);
+__brick_move(_ForwardIterator __first,
+             _ForwardIterator __last,
+             _OutputIterator __result,
+             /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2>
 _RandomAccessIterator2
-__brick_move(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-             /*vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_assign(
-        __first, __last - __first, __result,
-        [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) { *__result = std::move(*__first); });
+__brick_move(_RandomAccessIterator1 __first,
+             _RandomAccessIterator1 __last,
+             _RandomAccessIterator2 __result,
+             /*vector=*/std::true_type) noexcept {
+      __first, __last - __first, __result, [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) {
+        *__result = std::move(*__first);
+      });
 }
 
-struct __brick_move_destroy
-{
-    template <typename _RandomAccessIterator1, typename _RandomAccessIterator2>
-    _RandomAccessIterator2
-    operator()(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-               /*vec*/ std::true_type) const
-    {
-        using _IteratorValueType = typename std::iterator_traits<_RandomAccessIterator1>::value_type;
+struct __brick_move_destroy {
+  operator()(_RandomAccessIterator1 __first,
+             _RandomAccessIterator1 __last,
+             _RandomAccessIterator2 __result,
+             /*vec*/ std::true_type) const {
 
-        return __unseq_backend::__simd_assign(__first, __last - __first, __result,
-                                              [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) {
-                                                  *__result = std::move(*__first);
-                                                  (*__first).~_IteratorValueType();
-                                              });
-    }
+    return __unseq_backend::__simd_assign(
+        __first, __last - __first, __result, [](_RandomAccessIterator1 __first, _RandomAccessIterator2 __result) {
 
-    template <typename _RandomAccessIterator1, typename _RandomAccessIterator2>
-    _RandomAccessIterator2
-    operator()(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-               /*vec*/ std::false_type) const
-    {
-        using _IteratorValueType = typename std::iterator_traits<_RandomAccessIterator1>::value_type;
+  operator()(_RandomAccessIterator1 __first,
+             _RandomAccessIterator1 __last,
+             _RandomAccessIterator2 __result,
+             /*vec*/ std::false_type) const {
 
-        for (; __first != __last; ++__first, ++__result)
-        {
-            *__result = std::move(*__first);
-            (*__first).~_IteratorValueType();
-        }
-        return __result;
-    }
+    for (; __first != __last; ++__first, ++__result) {
 };
 
 //------------------------------------------------------------------------
 // swap_ranges
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _OutputIterator>
-_OutputIterator
-__brick_swap_ranges(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result,
-                    /*vector=*/std::false_type) noexcept
-{
-    return std::swap_ranges(__first, __last, __result);
+_OutputIterator __brick_swap_ranges(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2>
-_RandomAccessIterator2
-__brick_swap_ranges(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-                    /*vector=*/std::true_type) noexcept
-{
-    using std::iter_swap;
-    return __unseq_backend::__simd_assign(__first, __last - __first, __result,
-                                          iter_swap<_RandomAccessIterator1, _RandomAccessIterator2>);
+_RandomAccessIterator2 __brick_swap_ranges(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result,
+    /*vector=*/std::true_type) noexcept {
+  return __unseq_backend::__simd_assign(
+      __first, __last - __first, __result, iter_swap<_RandomAccessIterator1, _RandomAccessIterator2>);
 }
 
 //------------------------------------------------------------------------
 // copy_if
 //------------------------------------------------------------------------
 template <class _ForwardIterator, class _OutputIterator, class _UnaryPredicate>
-_OutputIterator
-__brick_copy_if(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result, _UnaryPredicate __pred,
-                /*vector=*/std::false_type) noexcept
-{
-    return std::copy_if(__first, __last, __result, __pred);
+_OutputIterator __brick_copy_if(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    _UnaryPredicate __pred,
+    /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _UnaryPredicate>
-_RandomAccessIterator2
-__brick_copy_if(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-                _UnaryPredicate __pred,
-                /*vector=*/std::true_type) noexcept
-{
+_RandomAccessIterator2 __brick_copy_if(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result,
+    /*vector=*/std::true_type) noexcept {
 #if defined(_PSTL_MONOTONIC_PRESENT)
-    return __unseq_backend::__simd_copy_if(__first, __last - __first, __result, __pred);
 #else
-    return std::copy_if(__first, __last, __result, __pred);
 #endif
 }
 
 // TODO: Try to use transform_reduce for combining __brick_copy_if_phase1 on IsVector.
 template <class _DifferenceType, class _ForwardIterator, class _UnaryPredicate>
-std::pair<_DifferenceType, _DifferenceType>
-__brick_calc_mask_1(_ForwardIterator __first, _ForwardIterator __last, bool* __restrict __mask, _UnaryPredicate __pred,
-                    /*vector=*/std::false_type) noexcept
-{
-    auto __count_true = _DifferenceType(0);
-    auto __size = __last - __first;
+std::pair<_DifferenceType, _DifferenceType> __brick_calc_mask_1(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    bool* __restrict __mask,
+    _UnaryPredicate __pred,
+    /*vector=*/std::false_type) noexcept {
+  auto __size       = __last - __first;
 
-    static_assert(__are_random_access_iterators<_ForwardIterator>::value,
-                  "Pattern-brick error. Should be a random access iterator.");
 
-    for (; __first != __last; ++__first, ++__mask)
-    {
-        *__mask = __pred(*__first);
-        if (*__mask)
-        {
-            ++__count_true;
-        }
-    }
-    return std::make_pair(__count_true, __size - __count_true);
+  for (; __first != __last; ++__first, ++__mask) {
+    if (*__mask) {
 }
 
 template <class _DifferenceType, class _RandomAccessIterator, class _UnaryPredicate>
-std::pair<_DifferenceType, _DifferenceType>
-__brick_calc_mask_1(_RandomAccessIterator __first, _RandomAccessIterator __last, bool* __mask, _UnaryPredicate __pred,
-                    /*vector=*/std::true_type) noexcept
-{
-    auto __result = __unseq_backend::__simd_calc_mask_1(__first, __last - __first, __mask, __pred);
-    return std::make_pair(__result, (__last - __first) - __result);
+std::pair<_DifferenceType, _DifferenceType> __brick_calc_mask_1(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    bool* __mask,
+    _UnaryPredicate __pred,
+    /*vector=*/std::true_type) noexcept {
 }
 
 template <class _ForwardIterator, class _OutputIterator, class _Assigner>
-void
-__brick_copy_by_mask(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result, bool* __mask,
-                     _Assigner __assigner, /*vector=*/std::false_type) noexcept
-{
-    for (; __first != __last; ++__first, ++__mask)
-    {
-        if (*__mask)
-        {
-            __assigner(__first, __result);
-            ++__result;
-        }
-    }
+void __brick_copy_by_mask(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    bool* __mask,
+    _Assigner __assigner,
+    /*vector=*/std::false_type) noexcept {
+  for (; __first != __last; ++__first, ++__mask) {
+    if (*__mask) {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Assigner>
-void
-__brick_copy_by_mask(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-                     bool* __restrict __mask, _Assigner __assigner, /*vector=*/std::true_type) noexcept
-{
+void __brick_copy_by_mask(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result,
+    bool* __restrict __mask,
+    _Assigner __assigner,
+    /*vector=*/std::true_type) noexcept {
 #if defined(_PSTL_MONOTONIC_PRESENT)
-    __unseq_backend::__simd_copy_by_mask(__first, __last - __first, __result, __mask, __assigner);
 #else
-    __internal::__brick_copy_by_mask(__first, __last, __result, __mask, __assigner, std::false_type());
 #endif
 }
 
 template <class _ForwardIterator, class _OutputIterator1, class _OutputIterator2>
-void
-__brick_partition_by_mask(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator1 __out_true,
-                          _OutputIterator2 __out_false, bool* __mask, /*vector=*/std::false_type) noexcept
-{
-    for (; __first != __last; ++__first, ++__mask)
-    {
-        if (*__mask)
-        {
-            *__out_true = *__first;
-            ++__out_true;
-        }
-        else
-        {
-            *__out_false = *__first;
-            ++__out_false;
-        }
-    }
+void __brick_partition_by_mask(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator1 __out_true,
+    _OutputIterator2 __out_false,
+    bool* __mask,
+    /*vector=*/std::false_type) noexcept {
+  for (; __first != __last; ++__first, ++__mask) {
+    if (*__mask) {
+    } else {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3>
-void
-__brick_partition_by_mask(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last,
-                          _RandomAccessIterator2 __out_true, _RandomAccessIterator3 __out_false, bool* __mask,
-                          /*vector=*/std::true_type) noexcept
-{
+void __brick_partition_by_mask(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __out_true,
+    _RandomAccessIterator3 __out_false,
+    bool* __mask,
+    /*vector=*/std::true_type) noexcept {
 #if defined(_PSTL_MONOTONIC_PRESENT)
-    __unseq_backend::__simd_partition_by_mask(__first, __last - __first, __out_true, __out_false, __mask);
 #else
-    __internal::__brick_partition_by_mask(__first, __last, __out_true, __out_false, __mask, std::false_type());
 #endif
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _UnaryPredicate>
-_OutputIterator
-__pattern_copy_if(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result,
-                  _UnaryPredicate __pred) noexcept
-{
-    return __internal::__brick_copy_if(__first, __last, __result, __pred, typename _Tag::__is_vector{});
+_OutputIterator __pattern_copy_if(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    _UnaryPredicate __pred) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _UnaryPredicate>
-_RandomAccessIterator2
-__pattern_copy_if(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                  _RandomAccessIterator1 __last, _RandomAccessIterator2 __result, _UnaryPredicate __pred)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator2 __pattern_copy_if(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result,
+    _UnaryPredicate __pred) {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::difference_type _DifferenceType;
-    const _DifferenceType __n = __last - __first;
-    if (_DifferenceType(1) < __n)
-    {
-        __par_backend::__buffer<bool> __mask_buf(__n);
-        return __internal::__except_handler(
-            [&__exec, __n, __first, __result, __pred, &__mask_buf]()
-            {
-                bool* __mask = __mask_buf.get();
-                _DifferenceType __m{};
-                __par_backend::__parallel_strict_scan(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __n, _DifferenceType(0),
-                    [=](_DifferenceType __i, _DifferenceType __len) { // Reduce
-                        return __internal::__brick_calc_mask_1<_DifferenceType>(__first + __i, __first + (__i + __len),
-                                                                                __mask + __i, __pred, _IsVector{})
-                            .first;
-                    },
-                    std::plus<_DifferenceType>(),                                                // Combine
-                    [=](_DifferenceType __i, _DifferenceType __len, _DifferenceType __initial) { // Scan
-                        __internal::__brick_copy_by_mask(
-                            __first + __i, __first + (__i + __len), __result + __initial, __mask + __i,
-                            [](_RandomAccessIterator1 __x, _RandomAccessIterator2 __z) { *__z = *__x; }, _IsVector{});
-                    },
-                    [&__m](_DifferenceType __total) { __m = __total; });
-                return __result + __m;
-            });
-    }
-    // trivial sequence - use serial algorithm
-    return __internal::__brick_copy_if(__first, __last, __result, __pred, _IsVector{});
+  if (_DifferenceType(1) < __n) {
+    return __internal::__except_handler([&__exec, __n, __first, __result, __pred, &__mask_buf]() {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __n,
+          _DifferenceType(0),
+            return __internal::__brick_calc_mask_1<_DifferenceType>(
+                       __first + __i, __first + (__i + __len), __mask + __i, __pred, _IsVector{})
+                __first + __i,
+                __first + (__i + __len),
+                __result + __initial,
+                __mask + __i,
+                [](_RandomAccessIterator1 __x, _RandomAccessIterator2 __z) { *__z = *__x; },
+                _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // count
 //------------------------------------------------------------------------
 template <class _RandomAccessIterator, class _Predicate>
 typename std::iterator_traits<_RandomAccessIterator>::difference_type
-__brick_count(_RandomAccessIterator __first, _RandomAccessIterator __last, _Predicate __pred,
-              /* is_vector = */ std::true_type) noexcept
-{
-    return __unseq_backend::__simd_count(__first, __last - __first, __pred);
+__brick_count(_RandomAccessIterator __first,
+              _RandomAccessIterator __last,
+              _Predicate __pred,
+              /* is_vector = */ std::true_type) noexcept {
 }
 
 template <class _ForwardIterator, class _Predicate>
 typename std::iterator_traits<_ForwardIterator>::difference_type
-__brick_count(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred,
-              /* is_vector = */ std::false_type) noexcept
-{
-    return std::count_if(__first, __last, __pred);
+__brick_count(_ForwardIterator __first,
+              _ForwardIterator __last,
+              _Predicate __pred,
+              /* is_vector = */ std::false_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
-typename std::iterator_traits<_ForwardIterator>::difference_type
-__pattern_count(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) noexcept
-{
-    return __internal::__brick_count(__first, __last, __pred, typename _Tag::__is_vector{});
+typename std::iterator_traits<_ForwardIterator>::difference_type __pattern_count(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Predicate>
-typename std::iterator_traits<_RandomAccessIterator>::difference_type
-__pattern_count(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                _RandomAccessIterator __last, _Predicate __pred)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+typename std::iterator_traits<_RandomAccessIterator>::difference_type __pattern_count(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Predicate __pred) {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type _SizeType;
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __par_backend::__parallel_reduce(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, _SizeType(0),
-                [__pred](_RandomAccessIterator __begin, _RandomAccessIterator __end, _SizeType __value) -> _SizeType
-                { return __value + __internal::__brick_count(__begin, __end, __pred, _IsVector{}); },
-                std::plus<_SizeType>());
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        _SizeType(0),
+        [__pred](_RandomAccessIterator __begin, _RandomAccessIterator __end, _SizeType __value) -> _SizeType {
+          return __value + __internal::__brick_count(__begin, __end, __pred, _IsVector{});
+        },
 }
 
 //------------------------------------------------------------------------
 // unique
 //------------------------------------------------------------------------
 
 template <class _RandomAccessIterator, class _BinaryPredicate>
 _RandomAccessIterator
-__brick_unique(_RandomAccessIterator __first, _RandomAccessIterator __last, _BinaryPredicate __pred,
-               /*is_vector=*/std::false_type) noexcept
-{
-    return std::unique(__first, __last, __pred);
+__brick_unique(_RandomAccessIterator __first,
+               _RandomAccessIterator __last,
+               _BinaryPredicate __pred,
+               /*is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _BinaryPredicate>
 _RandomAccessIterator
-__brick_unique(_RandomAccessIterator __first, _RandomAccessIterator __last, _BinaryPredicate __pred,
-               /*is_vector=*/std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::unique(__first, __last, __pred);
+__brick_unique(_RandomAccessIterator __first,
+               _RandomAccessIterator __last,
+               _BinaryPredicate __pred,
+               /*is_vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>
-_ForwardIterator
-__pattern_unique(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                 _BinaryPredicate __pred) noexcept
-{
-    return __internal::__brick_unique(__first, __last, __pred, typename _Tag::__is_vector{});
+_ForwardIterator __pattern_unique(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) noexcept {
 }
 
-// That function is shared between two algorithms - remove_if (__pattern_remove_if) and unique (pattern unique). But a mask calculation is different.
-// So, a caller passes _CalcMask brick into remove_elements.
+// That function is shared between two algorithms - remove_if (__pattern_remove_if) and unique (pattern unique). But a
+// mask calculation is different. So, a caller passes _CalcMask brick into remove_elements.
 template <class _IsVector, class _ExecutionPolicy, class _ForwardIterator, class _CalcMask>
-_ForwardIterator
-__remove_elements(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _ForwardIterator __first,
-                  _ForwardIterator __last, _CalcMask __calc_mask)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_ForwardIterator __remove_elements(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _CalcMask __calc_mask) {
 
-    typedef typename std::iterator_traits<_ForwardIterator>::difference_type _DifferenceType;
-    typedef typename std::iterator_traits<_ForwardIterator>::value_type _Tp;
-    _DifferenceType __n = __last - __first;
-    __par_backend::__buffer<bool> __mask_buf(__n);
-    // 1. find a first iterator that should be removed
-    return __internal::__except_handler([&]() {
-        bool* __mask = __mask_buf.get();
-        _DifferenceType __min = __par_backend::__parallel_reduce(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), _DifferenceType(0), __n, __n,
-            [__first, __mask, &__calc_mask](_DifferenceType __i, _DifferenceType __j,
-                                            _DifferenceType __local_min) -> _DifferenceType
-            {
-                // Create mask
-                __calc_mask(__mask + __i, __mask + __j, __first + __i);
+    bool* __mask          = __mask_buf.get();
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        _DifferenceType(0),
+        __n,
+        __n,
+        [__first, __mask, &__calc_mask](
+            _DifferenceType __i, _DifferenceType __j, _DifferenceType __local_min) -> _DifferenceType {
 
-                // if minimum was found in a previous range we shouldn't do anymore
-                if (__local_min < __i)
-                {
-                    return __local_min;
-                }
-                // find first iterator that should be removed
-                bool* __result = __internal::__brick_find_if(
-                    __mask + __i, __mask + __j, [](bool __val) { return !__val; }, _IsVector{});
-                if (__result - __mask == __j)
-                {
-                    return __local_min;
-                }
-                return std::min(__local_min, _DifferenceType(__result - __mask));
-            },
-            [](_DifferenceType __local_min1, _DifferenceType __local_min2) -> _DifferenceType
-            { return std::min(__local_min1, __local_min2); });
+          if (__local_min < __i) {
+          if (__result - __mask == __j) {
+        [](_DifferenceType __local_min1, _DifferenceType __local_min2) -> _DifferenceType {
+          return std::min(__local_min1, __local_min2);
+        });
 
-        // No elements to remove - exit
-        if (__min == __n)
-        {
-            return __last;
-        }
-        __n -= __min;
-        __first += __min;
+    if (__min == __n) {
 
-        __par_backend::__buffer<_Tp> __buf(__n);
-        _Tp* __result = __buf.get();
-        __mask += __min;
-        _DifferenceType __m{};
-        // 2. Elements that doesn't satisfy pred are moved to result
-        __par_backend::__parallel_strict_scan(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __n, _DifferenceType(0),
-            [__mask](_DifferenceType __i, _DifferenceType __len)
-            {
-                return __internal::__brick_count(
-                    __mask + __i, __mask + __i + __len, [](bool __val) { return __val; }, _IsVector{});
-            },
-            std::plus<_DifferenceType>(),
-            [=](_DifferenceType __i, _DifferenceType __len, _DifferenceType __initial)
-            {
-                __internal::__brick_copy_by_mask(
-                    __first + __i, __first + __i + __len, __result + __initial, __mask + __i,
-                    [](_ForwardIterator __x, _Tp* __z)
-                    {
-                        __internal::__invoke_if_else(
-                            std::is_trivial<_Tp>(), [&]() { *__z = std::move(*__x); },
-                            [&]() { ::new (std::addressof(*__z)) _Tp(std::move(*__x)); });
-                    },
-                    _IsVector{});
-            },
-            [&__m](_DifferenceType __total) { __m = __total; });
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __n,
+        _DifferenceType(0),
+        [__mask](_DifferenceType __i, _DifferenceType __len) {
+        [=](_DifferenceType __i, _DifferenceType __len, _DifferenceType __initial) {
+              __first + __i,
+              __first + __i + __len,
+              __result + __initial,
+              __mask + __i,
+              [](_ForwardIterator __x, _Tp* __z) {
+                    std::is_trivial<_Tp>(),
+                    [&]() { *__z = std::move(*__x); },
 
-        // 3. Elements from result are moved to [first, last)
-        __par_backend::__parallel_for(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __result, __result + __m,
-            [__result, __first](_Tp* __i, _Tp* __j)
-            {
-                __invoke_if_else(
-                    std::is_trivial<_Tp>(), [&]() { __brick_move(__i, __j, __first + (__i - __result), _IsVector{}); },
-                    [&]() { __brick_move_destroy()(__i, __j, __first + (__i - __result), _IsVector{}); });
-            });
-        return __first + __m;
-    });
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __result,
+        __result + __m,
+        [__result, __first](_Tp* __i, _Tp* __j) {
+              std::is_trivial<_Tp>(),
+              [&]() { __brick_move(__i, __j, __first + (__i - __result), _IsVector{}); },
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _BinaryPredicate>
-_RandomAccessIterator
-__pattern_unique(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                 _RandomAccessIterator __last, _BinaryPredicate __pred) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::reference _ReferenceType;
+_RandomAccessIterator __pattern_unique(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _BinaryPredicate __pred) noexcept {
 
-    if (__first == __last)
-    {
-        return __last;
-    }
-    if (__first + 1 == __last || __first + 2 == __last)
-    {
-        // Trivial sequence - use serial algorithm
-        return __internal::__brick_unique(__first, __last, __pred, _IsVector{});
-    }
-    return __internal::__remove_elements(
-        __tag, std::forward<_ExecutionPolicy>(__exec), ++__first, __last,
-        [&__pred](bool* __b, bool* __e, _RandomAccessIterator __it)
-        {
-            __internal::__brick_walk3(
-                __b, __e, __it - 1, __it,
-                [&__pred](bool& __x, _ReferenceType __y, _ReferenceType __z) { __x = !__pred(__y, __z); }, _IsVector{});
-        });
+  if (__first == __last) {
+  if (__first + 1 == __last || __first + 2 == __last) {
+      __tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      ++__first,
+      __last,
+      [&__pred](bool* __b, bool* __e, _RandomAccessIterator __it) {
+            __b,
+            __e,
+            __it - 1,
+            __it,
+            [&__pred](bool& __x, _ReferenceType __y, _ReferenceType __z) { __x = !__pred(__y, __z); },
+            _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // unique_copy
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class OutputIterator, class _BinaryPredicate>
-OutputIterator
-__brick_unique_copy(_ForwardIterator __first, _ForwardIterator __last, OutputIterator __result, _BinaryPredicate __pred,
-                    /*vector=*/std::false_type) noexcept
-{
-    return std::unique_copy(__first, __last, __result, __pred);
+OutputIterator __brick_unique_copy(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    OutputIterator __result,
+    _BinaryPredicate __pred,
+    /*vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _BinaryPredicate>
-_RandomAccessIterator2
-__brick_unique_copy(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result,
-                    _BinaryPredicate __pred, /*vector=*/std::true_type) noexcept
-{
+_RandomAccessIterator2 __brick_unique_copy(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result,
+    _BinaryPredicate __pred,
+    /*vector=*/std::true_type) noexcept {
 #if defined(_PSTL_MONOTONIC_PRESENT)
-    return __unseq_backend::__simd_unique_copy(__first, __last - __first, __result, __pred);
 #else
-    return std::unique_copy(__first, __last, __result, __pred);
 #endif
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _BinaryPredicate>
-_OutputIterator
-__pattern_unique_copy(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                      _OutputIterator __result, _BinaryPredicate __pred) noexcept
-{
-    return __internal::__brick_unique_copy(__first, __last, __result, __pred, typename _Tag::__is_vector{});
+_OutputIterator __pattern_unique_copy(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    _BinaryPredicate __pred) noexcept {
 }
 
 template <class _DifferenceType, class _RandomAccessIterator, class _BinaryPredicate>
-_DifferenceType
-__brick_calc_mask_2(_RandomAccessIterator __first, _RandomAccessIterator __last, bool* __restrict __mask,
-                    _BinaryPredicate __pred, /*vector=*/std::false_type) noexcept
-{
-    _DifferenceType __count = 0;
-    for (; __first != __last; ++__first, ++__mask)
-    {
-        *__mask = !__pred(*__first, *(__first - 1));
-        __count += *__mask;
-    }
-    return __count;
+_DifferenceType __brick_calc_mask_2(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    bool* __restrict __mask,
+    _BinaryPredicate __pred,
+    /*vector=*/std::false_type) noexcept {
+  for (; __first != __last; ++__first, ++__mask) {
 }
 
 template <class _DifferenceType, class _RandomAccessIterator, class _BinaryPredicate>
-_DifferenceType
-__brick_calc_mask_2(_RandomAccessIterator __first, _RandomAccessIterator __last, bool* __restrict __mask,
-                    _BinaryPredicate __pred, /*vector=*/std::true_type) noexcept
-{
-    return __unseq_backend::__simd_calc_mask_2(__first, __last - __first, __mask, __pred);
+_DifferenceType __brick_calc_mask_2(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    bool* __restrict __mask,
+    _BinaryPredicate __pred,
+    /*vector=*/std::true_type) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryPredicate>
-_RandomAccessIterator2
-__pattern_unique_copy(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                      _RandomAccessIterator1 __last, _RandomAccessIterator2 __result, _BinaryPredicate __pred)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator2 __pattern_unique_copy(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result,
+    _BinaryPredicate __pred) {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::difference_type _DifferenceType;
-    const _DifferenceType __n = __last - __first;
-    if (_DifferenceType(2) < __n)
-    {
-        __par_backend::__buffer<bool> __mask_buf(__n);
-        if (_DifferenceType(2) < __n)
-        {
-            return __internal::__except_handler(
-                [&__exec, __n, __first, __result, __pred, &__mask_buf]()
-                {
-                    bool* __mask = __mask_buf.get();
-                    _DifferenceType __m{};
-                    __par_backend::__parallel_strict_scan(
-                        __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __n, _DifferenceType(0),
-                        [=](_DifferenceType __i, _DifferenceType __len) -> _DifferenceType { // Reduce
-                            _DifferenceType __extra = 0;
-                            if (__i == 0)
-                            {
-                                // Special boundary case
-                                __mask[__i] = true;
-                                if (--__len == 0)
-                                    return 1;
-                                ++__i;
-                                ++__extra;
-                            }
-                            return __internal::__brick_calc_mask_2<_DifferenceType>(
-                                       __first + __i, __first + (__i + __len), __mask + __i, __pred, _IsVector{}) +
-                                   __extra;
-                        },
-                        std::plus<_DifferenceType>(),                                                // Combine
-                        [=](_DifferenceType __i, _DifferenceType __len, _DifferenceType __initial) { // Scan
-                            // Phase 2 is same as for __pattern_copy_if
-                            __internal::__brick_copy_by_mask(
-                                __first + __i, __first + (__i + __len), __result + __initial, __mask + __i,
-                                [](_RandomAccessIterator1 __x, _RandomAccessIterator2 __z) { *__z = *__x; },
-                                _IsVector{});
-                        },
-                        [&__m](_DifferenceType __total) { __m = __total; });
-                    return __result + __m;
-                });
-        }
-    }
-    // trivial sequence - use serial algorithm
-    return __internal::__brick_unique_copy(__first, __last, __result, __pred, _IsVector{});
+  if (_DifferenceType(2) < __n) {
+    if (_DifferenceType(2) < __n) {
+      return __internal::__except_handler([&__exec, __n, __first, __result, __pred, &__mask_buf]() {
+            __backend_tag{},
+            std::forward<_ExecutionPolicy>(__exec),
+            __n,
+            _DifferenceType(0),
+              if (__i == 0) {
+                  __first + __i,
+                  __first + (__i + __len),
+                  __result + __initial,
+                  __mask + __i,
 }
 
 //------------------------------------------------------------------------
 // reverse
 //------------------------------------------------------------------------
 template <class _BidirectionalIterator>
-void
-__brick_reverse(_BidirectionalIterator __first, _BidirectionalIterator __last, /*__is_vector=*/std::false_type) noexcept
-{
-    std::reverse(__first, __last);
+void __brick_reverse(
+    _BidirectionalIterator __first, _BidirectionalIterator __last, /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator>
-void
-__brick_reverse(_RandomAccessIterator __first, _RandomAccessIterator __last, /*__is_vector=*/std::true_type) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::reference _ReferenceType;
+void __brick_reverse(
+    _RandomAccessIterator __first, _RandomAccessIterator __last, /*__is_vector=*/std::true_type) noexcept {
 
-    const auto __n = (__last - __first) / 2;
-    __unseq_backend::__simd_walk_2(__first, __n, std::reverse_iterator<_RandomAccessIterator>(__last),
-                                   [](_ReferenceType __x, _ReferenceType __y) {
-                                       using std::swap;
-                                       swap(__x, __y);
-                                   });
+  __unseq_backend::__simd_walk_2(
+      __first, __n, std::reverse_iterator<_RandomAccessIterator>(__last), [](_ReferenceType __x, _ReferenceType __y) {
 }
 
 // this brick is called in parallel version, so we can use iterator arithmetic
 template <class _BidirectionalIterator>
-void
-__brick_reverse(_BidirectionalIterator __first, _BidirectionalIterator __last, _BidirectionalIterator __d_last,
-                /*is_vector=*/std::false_type) noexcept
-{
-    for (--__d_last; __first != __last; ++__first, --__d_last)
-    {
-        using std::iter_swap;
-        iter_swap(__first, __d_last);
-    }
+void __brick_reverse(_BidirectionalIterator __first,
+                     _BidirectionalIterator __last,
+                     _BidirectionalIterator __d_last,
+                     /*is_vector=*/std::false_type) noexcept {
+  for (--__d_last; __first != __last; ++__first, --__d_last) {
 }
 
 // this brick is called in parallel version, so we can use iterator arithmetic
 template <class _RandomAccessIterator>
-void
-__brick_reverse(_RandomAccessIterator __first, _RandomAccessIterator __last, _RandomAccessIterator __d_last,
-                /*is_vector=*/std::true_type) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::reference _ReferenceType;
+void __brick_reverse(_RandomAccessIterator __first,
+                     _RandomAccessIterator __last,
+                     _RandomAccessIterator __d_last,
+                     /*is_vector=*/std::true_type) noexcept {
 
-    __unseq_backend::__simd_walk_2(__first, __last - __first, std::reverse_iterator<_RandomAccessIterator>(__d_last),
-                                   [](_ReferenceType __x, _ReferenceType __y) {
-                                       using std::swap;
-                                       swap(__x, __y);
-                                   });
+  __unseq_backend::__simd_walk_2(
+      __first,
+      __last - __first,
+      std::reverse_iterator<_RandomAccessIterator>(__d_last),
 }
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator>
-void
-__pattern_reverse(_Tag, _ExecutionPolicy&&, _BidirectionalIterator __first, _BidirectionalIterator __last) noexcept
-{
-    __internal::__brick_reverse(__first, __last, typename _Tag::__is_vector{});
+void __pattern_reverse(
+    _Tag, _ExecutionPolicy&&, _BidirectionalIterator __first, _BidirectionalIterator __last) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator>
-void
-__pattern_reverse(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                  _RandomAccessIterator __last)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+void __pattern_reverse(__parallel_tag<_IsVector> __tag,
+                       _ExecutionPolicy&& __exec,
+                       _RandomAccessIterator __first,
+                       _RandomAccessIterator __last) {
 
-    __par_backend::__parallel_for(
-        __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __first + (__last - __first) / 2,
-        [__first, __last](_RandomAccessIterator __inner_first, _RandomAccessIterator __inner_last)
-        { __internal::__brick_reverse(__inner_first, __inner_last, __last - (__inner_first - __first), _IsVector{}); });
+      __backend_tag{},
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __first + (__last - __first) / 2,
+      [__first, __last](_RandomAccessIterator __inner_first, _RandomAccessIterator __inner_last) {
+        __internal::__brick_reverse(__inner_first, __inner_last, __last - (__inner_first - __first), _IsVector{});
+      });
 }
 
 //------------------------------------------------------------------------
 // reverse_copy
 //------------------------------------------------------------------------
 
 template <class _BidirectionalIterator, class _OutputIterator>
-_OutputIterator
-__brick_reverse_copy(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __d_first,
-                     /*is_vector=*/std::false_type) noexcept
-{
-    return std::reverse_copy(__first, __last, __d_first);
+_OutputIterator __brick_reverse_copy(
+    _BidirectionalIterator __first,
+    _BidirectionalIterator __last,
+    _OutputIterator __d_first,
+    /*is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2>
-_RandomAccessIterator2
-__brick_reverse_copy(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __d_first,
-                     /*is_vector=*/std::true_type) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::reference _ReferenceType1;
-    typedef typename std::iterator_traits<_RandomAccessIterator2>::reference _ReferenceType2;
+_RandomAccessIterator2 __brick_reverse_copy(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __d_first,
+    /*is_vector=*/std::true_type) noexcept {
 
-    return __unseq_backend::__simd_walk_2(std::reverse_iterator<_RandomAccessIterator1>(__last), __last - __first,
-                                          __d_first, [](_ReferenceType1 __x, _ReferenceType2 __y) { __y = __x; });
+  return __unseq_backend::__simd_walk_2(
+      std::reverse_iterator<_RandomAccessIterator1>(__last),
+      __last - __first,
+      __d_first,
+      [](_ReferenceType1 __x, _ReferenceType2 __y) { __y = __x; });
 }
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator, class _OutputIterator>
-_OutputIterator
-__pattern_reverse_copy(_Tag, _ExecutionPolicy&&, _BidirectionalIterator __first, _BidirectionalIterator __last,
-                       _OutputIterator __d_first) noexcept
-{
-    return __internal::__brick_reverse_copy(__first, __last, __d_first, typename _Tag::__is_vector{});
+_OutputIterator __pattern_reverse_copy(
+    _Tag,
+    _ExecutionPolicy&&,
+    _BidirectionalIterator __first,
+    _BidirectionalIterator __last,
+    _OutputIterator __d_first) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2>
-_RandomAccessIterator2
-__pattern_reverse_copy(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                       _RandomAccessIterator1 __last, _RandomAccessIterator2 __d_first)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator2 __pattern_reverse_copy(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __d_first) {
 
-    auto __len = __last - __first;
-    __par_backend::__parallel_for(
-        __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-        [__first, __len, __d_first](_RandomAccessIterator1 __inner_first, _RandomAccessIterator1 __inner_last)
-        {
-            __internal::__brick_reverse_copy(__inner_first, __inner_last,
-                                             __d_first + (__len - (__inner_last - __first)), _IsVector{});
-        });
-    return __d_first + __len;
+      __backend_tag{},
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      [__first, __len, __d_first](_RandomAccessIterator1 __inner_first, _RandomAccessIterator1 __inner_last) {
+        __internal::__brick_reverse_copy(
+            __inner_first, __inner_last, __d_first + (__len - (__inner_last - __first)), _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // rotate
 //------------------------------------------------------------------------
 template <class _ForwardIterator>
 _ForwardIterator
-__brick_rotate(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last,
-               /*is_vector=*/std::false_type) noexcept
-{
+__brick_rotate(_ForwardIterator __first,
+               _ForwardIterator __middle,
+               _ForwardIterator __last,
+               /*is_vector=*/std::false_type) noexcept {
 #if defined(_PSTL_CPP11_STD_ROTATE_BROKEN)
-    std::rotate(__first, __middle, __last);
-    return std::next(__first, std::distance(__middle, __last));
 #else
-    return std::rotate(__first, __middle, __last);
 #endif
 }
 
 template <class _RandomAccessIterator>
 _RandomAccessIterator
-__brick_rotate(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
-               /*is_vector=*/std::true_type) noexcept
-{
-    auto __n = __last - __first;
-    auto __m = __middle - __first;
-    const _RandomAccessIterator __ret = __first + (__last - __middle);
+__brick_rotate(_RandomAccessIterator __first,
+               _RandomAccessIterator __middle,
+               _RandomAccessIterator __last,
+               /*is_vector=*/std::true_type) noexcept {
+  auto __n                          = __last - __first;
+  auto __m                          = __middle - __first;
 
-    bool __is_left = (__m <= __n / 2);
-    if (!__is_left)
-        __m = __n - __m;
 
-    while (__n > 1 && __m > 0)
-    {
-        using std::iter_swap;
-        const auto __m_2 = __m * 2;
-        if (__is_left)
-        {
-            for (; __last - __first >= __m_2; __first += __m)
-            {
-                __unseq_backend::__simd_assign(__first, __m, __first + __m,
-                                               iter_swap<_RandomAccessIterator, _RandomAccessIterator>);
-            }
-        }
-        else
-        {
-            for (; __last - __first >= __m_2; __last -= __m)
-            {
-                __unseq_backend::__simd_assign(__last - __m, __m, __last - __m_2,
-                                               iter_swap<_RandomAccessIterator, _RandomAccessIterator>);
-            }
-        }
-        __is_left = !__is_left;
-        __m = __n % __m;
-        __n = __last - __first;
-    }
+  while (__n > 1 && __m > 0) {
+    if (__is_left) {
+      for (; __last - __first >= __m_2; __first += __m) {
+        __unseq_backend::__simd_assign(
+            __first, __m, __first + __m, iter_swap<_RandomAccessIterator, _RandomAccessIterator>);
+      }
+    } else {
+      for (; __last - __first >= __m_2; __last -= __m) {
+        __unseq_backend::__simd_assign(
+            __last - __m, __m, __last - __m_2, iter_swap<_RandomAccessIterator, _RandomAccessIterator>);
+    __m       = __n % __m;
+    __n       = __last - __first;
 
-    return __ret;
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator>
-_ForwardIterator
-__pattern_rotate(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __middle,
-                 _ForwardIterator __last) noexcept
-{
-    return __internal::__brick_rotate(__first, __middle, __last, typename _Tag::__is_vector{});
+_ForwardIterator __pattern_rotate(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator>
-_RandomAccessIterator
-__pattern_rotate(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                 _RandomAccessIterator __middle, _RandomAccessIterator __last)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_rotate(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __middle,
+    _RandomAccessIterator __last) {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator>::value_type _Tp;
-    auto __n = __last - __first;
-    auto __m = __middle - __first;
-    if (__m <= __n / 2)
-    {
-        __par_backend::__buffer<_Tp> __buf(__n - __m);
-        return __internal::__except_handler(
-            [&__exec, __n, __m, __first, __middle, __last, &__buf]()
-            {
-                _Tp* __result = __buf.get();
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __middle, __last,
-                    [__middle, __result](_RandomAccessIterator __b, _RandomAccessIterator __e)
-                    { __internal::__brick_uninitialized_move(__b, __e, __result + (__b - __middle), _IsVector{}); });
+  if (__m <= __n / 2) {
+    return __internal::__except_handler([&__exec, __n, __m, __first, __middle, __last, &__buf]() {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __middle,
+          __last,
+          [__middle, __result](_RandomAccessIterator __b, _RandomAccessIterator __e) {
+            __internal::__brick_uninitialized_move(__b, __e, __result + (__b - __middle), _IsVector{});
+          });
 
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __middle,
-                    [__last, __middle](_RandomAccessIterator __b, _RandomAccessIterator __e)
-                    { __internal::__brick_move(__b, __e, __b + (__last - __middle), _IsVector{}); });
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __first,
+          __middle,
+          [__last, __middle](_RandomAccessIterator __b, _RandomAccessIterator __e) {
+            __internal::__brick_move(__b, __e, __b + (__last - __middle), _IsVector{});
+          });
 
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __result, __result + (__n - __m),
-                    [__first, __result](_Tp* __b, _Tp* __e)
-                    { __brick_move_destroy()(__b, __e, __first + (__b - __result), _IsVector{}); });
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __result,
+          __result + (__n - __m),
+          [__first, __result](_Tp* __b, _Tp* __e) {
+            __brick_move_destroy()(__b, __e, __first + (__b - __result), _IsVector{});
+          });
 
-                return __first + (__last - __middle);
-            });
-    }
-    else
-    {
-        __par_backend::__buffer<_Tp> __buf(__m);
-        return __internal::__except_handler(
-            [&__exec, __n, __m, __first, __middle, __last, &__buf]()
-            {
-                _Tp* __result = __buf.get();
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __middle,
-                    [__first, __result](_RandomAccessIterator __b, _RandomAccessIterator __e)
-                    { __internal::__brick_uninitialized_move(__b, __e, __result + (__b - __first), _IsVector{}); });
+  } else {
+    return __internal::__except_handler([&__exec, __n, __m, __first, __middle, __last, &__buf]() {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __first,
+          __middle,
+          [__first, __result](_RandomAccessIterator __b, _RandomAccessIterator __e) {
+            __internal::__brick_uninitialized_move(__b, __e, __result + (__b - __first), _IsVector{});
+          });
 
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __middle, __last,
-                    [__first, __middle](_RandomAccessIterator __b, _RandomAccessIterator __e)
-                    { __internal::__brick_move(__b, __e, __first + (__b - __middle), _IsVector{}); });
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __middle,
+          __last,
+          [__first, __middle](_RandomAccessIterator __b, _RandomAccessIterator __e) {
+            __internal::__brick_move(__b, __e, __first + (__b - __middle), _IsVector{});
+          });
 
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __result, __result + __m,
-                    [__n, __m, __first, __result](_Tp* __b, _Tp* __e)
-                    { __brick_move_destroy()(__b, __e, __first + ((__n - __m) + (__b - __result)), _IsVector{}); });
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __result,
+          __result + __m,
+          [__n, __m, __first, __result](_Tp* __b, _Tp* __e) {
+            __brick_move_destroy()(__b, __e, __first + ((__n - __m) + (__b - __result)), _IsVector{});
+          });
 
-                return __first + (__last - __middle);
-            });
-    }
 }
 
 //------------------------------------------------------------------------
 // rotate_copy
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator>
-_OutputIterator
-__brick_rotate_copy(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last,
-                    _OutputIterator __result, /*__is_vector=*/std::false_type) noexcept
-{
-    return std::rotate_copy(__first, __middle, __last, __result);
+_OutputIterator __brick_rotate_copy(
+    _ForwardIterator __first,
+    _ForwardIterator __middle,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2>
-_RandomAccessIterator2
-__brick_rotate_copy(_RandomAccessIterator1 __first, _RandomAccessIterator1 __middle, _RandomAccessIterator1 __last,
-                    _RandomAccessIterator2 __result, /*__is_vector=*/std::true_type) noexcept
-{
-    _RandomAccessIterator2 __res = __internal::__brick_copy(__middle, __last, __result, std::true_type());
-    return __internal::__brick_copy(__first, __middle, __res, std::true_type());
+_RandomAccessIterator2 __brick_rotate_copy(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __middle,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator>
-_OutputIterator
-__pattern_rotate_copy(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __middle,
-                      _ForwardIterator __last, _OutputIterator __result) noexcept
-{
-    return __internal::__brick_rotate_copy(__first, __middle, __last, __result, typename _Tag::__is_vector{});
+_OutputIterator __pattern_rotate_copy(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __middle,
+    _ForwardIterator __last,
+    _OutputIterator __result) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2>
-_RandomAccessIterator2
-__pattern_rotate_copy(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                      _RandomAccessIterator1 __middle, _RandomAccessIterator1 __last, _RandomAccessIterator2 __result)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator2 __pattern_rotate_copy(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __middle,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __result) {
 
-    __par_backend::__parallel_for(
-        __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-        [__first, __last, __middle, __result](_RandomAccessIterator1 __b, _RandomAccessIterator1 __e)
-        {
-            if (__b > __middle)
-            {
-                __internal::__brick_copy(__b, __e, __result + (__b - __middle), _IsVector{});
-            }
-            else
-            {
-                _RandomAccessIterator2 __new_result = __result + ((__last - __middle) + (__b - __first));
-                if (__e < __middle)
-                {
-                    __internal::__brick_copy(__b, __e, __new_result, _IsVector{});
-                }
-                else
-                {
-                    __internal::__brick_copy(__b, __middle, __new_result, _IsVector{});
-                    __internal::__brick_copy(__middle, __e, __result, _IsVector{});
-                }
-            }
-        });
-    return __result + (__last - __first);
+      __backend_tag{},
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      [__first, __last, __middle, __result](_RandomAccessIterator1 __b, _RandomAccessIterator1 __e) {
+        if (__b > __middle) {
+        } else {
+          if (__e < __middle) {
+          } else {
 }
 
 //------------------------------------------------------------------------
 // is_partitioned
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _UnaryPredicate>
-bool
-__brick_is_partitioned(_ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred,
-                       /*is_vector=*/std::false_type) noexcept
-{
-    return std::is_partitioned(__first, __last, __pred);
+bool __brick_is_partitioned(_ForwardIterator __first,
+                            _ForwardIterator __last,
+                            _UnaryPredicate __pred,
+                            /*is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-bool
-__brick_is_partitioned(_RandomAccessIterator __first, _RandomAccessIterator __last, _UnaryPredicate __pred,
-                       /*is_vector=*/std::true_type) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type _SizeType;
-    if (__first == __last)
-    {
-        return true;
-    }
-    else
-    {
-        _RandomAccessIterator __result = __unseq_backend::__simd_first(
-            __first, _SizeType(0), __last - __first,
-            [&__pred](_RandomAccessIterator __it, _SizeType __i) { return !__pred(__it[__i]); });
-        if (__result == __last)
-        {
-            return true;
-        }
-        else
-        {
-            ++__result;
-            return !__unseq_backend::__simd_or(__result, __last - __result, __pred);
-        }
-    }
+bool __brick_is_partitioned(_RandomAccessIterator __first,
+                            _RandomAccessIterator __last,
+                            _UnaryPredicate __pred,
+                            /*is_vector=*/std::true_type) noexcept {
+  if (__first == __last) {
+  } else {
+        __first, _SizeType(0), __last - __first, [&__pred](_RandomAccessIterator __it, _SizeType __i) {
+          return !__pred(__it[__i]);
+        });
+    if (__result == __last) {
+    } else {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
-bool
-__pattern_is_partitioned(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                         _UnaryPredicate __pred) noexcept
-{
-    return __internal::__brick_is_partitioned(__first, __last, __pred, typename _Tag::__is_vector{});
+bool __pattern_is_partitioned(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-bool
-__pattern_is_partitioned(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                         _RandomAccessIterator __last, _UnaryPredicate __pred)
-{
-    if (__first == __last)
-    {
-        return true;
-    }
-    else
-    {
-        using __backend_tag = typename decltype(__tag)::__backend_tag;
+bool __pattern_is_partitioned(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _UnaryPredicate __pred) {
+  if (__first == __last) {
+  } else {
 
-        return __internal::__except_handler([&]() {
-            // State of current range:
-            // broken     - current range is not partitioned by pred
-            // all_true   - all elements in current range satisfy pred
-            // all_false  - all elements in current range don't satisfy pred
-            // true_false - elements satisfy pred are placed before elements that don't satisfy pred
-            enum _ReduceType
-            {
-                __not_init = -1,
-                __broken,
-                __all_true,
-                __all_false,
-                __true_false
-            };
-            _ReduceType __init = __not_init;
+      enum _ReduceType { __not_init = -1, __broken, __all_true, __all_false, __true_false };
 
-            // Array with states that we'll have when state from the left branch is merged with state from the right branch.
-            // State is calculated by formula: new_state = table[left_state * 4 + right_state]
-            _ReduceType __table[] = {__broken,     __broken,     __broken,     __broken, __broken,    __all_true,
-                                     __true_false, __true_false, __broken,     __broken, __all_false, __broken,
-                                     __broken,     __broken,     __true_false, __broken};
+      _ReduceType __table[] = {
+          __broken,
+          __broken,
+          __broken,
+          __broken,
+          __broken,
+          __all_true,
+          __true_false,
+          __true_false,
+          __broken,
+          __broken,
+          __all_false,
+          __broken,
+          __broken,
+          __broken,
+          __true_false,
+          __broken};
 
-            __init = __par_backend::__parallel_reduce(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, __init,
-                [&__pred, &__table](_RandomAccessIterator __i, _RandomAccessIterator __j,
-                                    _ReduceType __value) -> _ReduceType
-                {
-                    if (__value == __broken)
-                    {
-                        return __broken;
-                    }
-                    _ReduceType __res = __not_init;
-                    // if first element satisfy pred
-                    if (__pred(*__i))
-                    {
-                        // find first element that don't satisfy pred
-                        _RandomAccessIterator __x =
-                            __internal::__brick_find_if(__i + 1, __j, std::not_fn(__pred), _IsVector{});
-                        if (__x != __j)
-                        {
-                            // find first element after "x" that satisfy pred
-                            _RandomAccessIterator __y = __internal::__brick_find_if(__x + 1, __j, __pred, _IsVector{});
-                            // if it was found then range isn't partitioned by pred
-                            if (__y != __j)
-                            {
-                                return __broken;
-                            }
-                            else
-                            {
-                                __res = __true_false;
-                            }
-                        }
-                        else
-                        {
-                            __res = __all_true;
-                        }
-                    }
-                    else
-                    { // if first element doesn't satisfy pred
-                        // then we should find the first element that satisfy pred.
-                        // If we found it then range isn't partitioned by pred
-                        if (__internal::__brick_find_if(__i + 1, __j, __pred, _IsVector{}) != __j)
-                        {
-                            return __broken;
-                        }
-                        else
-                        {
-                            __res = __all_false;
-                        }
-                    }
-                    // if we have value from left range then we should calculate the result
-                    return (__value == -1) ? __res : __table[__value * 4 + __res];
-                },
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __first,
+          __last,
+          __init,
+          [&__pred,
+           &__table](_RandomAccessIterator __i, _RandomAccessIterator __j, _ReduceType __value) -> _ReduceType {
+            if (__value == __broken) {
+            if (__pred(*__i)) {
+              _RandomAccessIterator __x = __internal::__brick_find_if(__i + 1, __j, std::not_fn(__pred), _IsVector{});
+              if (__x != __j) {
+                if (__y != __j) {
+                } else {
+              } else {
+            } else { // if first element doesn't satisfy pred
+              if (__internal::__brick_find_if(__i + 1, __j, __pred, _IsVector{}) != __j) {
+              } else {
 
-                [&__table](_ReduceType __val1, _ReduceType __val2) -> _ReduceType
-                {
-                    if (__val1 == __broken || __val2 == __broken)
-                    {
-                        return __broken;
-                    }
-                    // calculate the result for new big range
-                    return __table[__val1 * 4 + __val2];
-                });
-            return __init != __broken;
-        });
-    }
+          [&__table](_ReduceType __val1, _ReduceType __val2) -> _ReduceType {
+            if (__val1 == __broken || __val2 == __broken) {
 }
 
 //------------------------------------------------------------------------
 // partition
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _UnaryPredicate>
-_ForwardIterator
-__brick_partition(_ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred,
-                  /*is_vector=*/std::false_type) noexcept
-{
-    return std::partition(__first, __last, __pred);
+_ForwardIterator __brick_partition(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _UnaryPredicate __pred,
+    /*is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__brick_partition(_RandomAccessIterator __first, _RandomAccessIterator __last, _UnaryPredicate __pred,
-                  /*is_vector=*/std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::partition(__first, __last, __pred);
+_RandomAccessIterator __brick_partition(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _UnaryPredicate __pred,
+    /*is_vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
-_ForwardIterator
-__pattern_partition(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                    _UnaryPredicate __pred) noexcept
-{
-    return __internal::__brick_partition(__first, __last, __pred, typename _Tag::__is_vector{});
+_ForwardIterator __pattern_partition(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__pattern_partition(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                    _RandomAccessIterator __last, _UnaryPredicate __pred)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_partition(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _UnaryPredicate __pred) {
 
-    // partitioned range: elements before pivot satisfy pred (true part),
-    //                    elements after pivot don't satisfy pred (false part)
-    struct _PartitionRange
-    {
-        _RandomAccessIterator __begin;
-        _RandomAccessIterator __pivot;
-        _RandomAccessIterator __end;
-    };
+  struct _PartitionRange {
 
-    return __internal::__except_handler([&]() {
-        _PartitionRange __init{__last, __last, __last};
 
-        // lambda for merging two partitioned ranges to one partitioned range
-        auto __reductor = [&__exec](_PartitionRange __val1, _PartitionRange __val2) -> _PartitionRange
-        {
-            auto __size1 = __val1.__end - __val1.__pivot;
-            auto __size2 = __val2.__pivot - __val2.__begin;
-            auto __new_begin = __val2.__begin - (__val1.__end - __val1.__begin);
+    auto __reductor = [&__exec](_PartitionRange __val1, _PartitionRange __val2) -> _PartitionRange {
+      auto __size1     = __val1.__end - __val1.__pivot;
+      auto __size2     = __val2.__pivot - __val2.__begin;
 
-            // if all elements in left range satisfy pred then we can move new pivot to pivot of right range
-            if (__val1.__end == __val1.__pivot)
-            {
-                return {__new_begin, __val2.__pivot, __val2.__end};
-            }
-            // if true part of right range greater than false part of left range
-            // then we should swap the false part of left range and last part of true part of right range
-            else if (__size2 > __size1)
-            {
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __val1.__pivot, __val1.__pivot + __size1,
-                    [__val1, __val2, __size1](_RandomAccessIterator __i, _RandomAccessIterator __j) {
-                        __internal::__brick_swap_ranges(__i, __j, (__val2.__pivot - __size1) + (__i - __val1.__pivot),
-                                                        _IsVector{});
-                    });
-                return {__new_begin, __val2.__pivot - __size1, __val2.__end};
-            }
-            // else we should swap the first part of false part of left range and true part of right range
-            else
-            {
-                __par_backend::__parallel_for(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __val1.__pivot, __val1.__pivot + __size2,
-                    [__val1, __val2](_RandomAccessIterator __i, _RandomAccessIterator __j) {
-                        __internal::__brick_swap_ranges(__i, __j, __val2.__begin + (__i - __val1.__pivot), _IsVector{});
-                    });
-                return {__new_begin, __val1.__pivot + __size2, __val2.__end};
-            }
-        };
+      if (__val1.__end == __val1.__pivot) {
+      else if (__size2 > __size1) {
+            __backend_tag{},
+            std::forward<_ExecutionPolicy>(__exec),
+            __val1.__pivot,
+            __val1.__pivot + __size1,
+              __internal::__brick_swap_ranges(
+                  __i, __j, (__val2.__pivot - __size1) + (__i - __val1.__pivot), _IsVector{});
+      else {
+            __backend_tag{},
+            std::forward<_ExecutionPolicy>(__exec),
+            __val1.__pivot,
+            __val1.__pivot + __size2,
 
-        _PartitionRange __result = __par_backend::__parallel_reduce(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, __init,
-            [__pred, __reductor](_RandomAccessIterator __i, _RandomAccessIterator __j,
-                                 _PartitionRange __value) -> _PartitionRange
-            {
-                //1. serial partition
-                _RandomAccessIterator __pivot = __internal::__brick_partition(__i, __j, __pred, _IsVector{});
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        __init,
+        [__pred,
+         __reductor](_RandomAccessIterator __i, _RandomAccessIterator __j, _PartitionRange __value) -> _PartitionRange {
+          // 1. serial partition
 
-                // 2. merging of two ranges (left and right respectively)
-                return __reductor(__value, {__i, __pivot, __j});
-            },
-            __reductor);
-        return __result.__pivot;
-    });
 }
 
 //------------------------------------------------------------------------
 // stable_partition
 //------------------------------------------------------------------------
 
 template <class _BidirectionalIterator, class _UnaryPredicate>
-_BidirectionalIterator
-__brick_stable_partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _UnaryPredicate __pred,
-                         /*__is_vector=*/std::false_type) noexcept
-{
-    return std::stable_partition(__first, __last, __pred);
+_BidirectionalIterator __brick_stable_partition(
+    _BidirectionalIterator __first,
+    _BidirectionalIterator __last,
+    _UnaryPredicate __pred,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__brick_stable_partition(_RandomAccessIterator __first, _RandomAccessIterator __last, _UnaryPredicate __pred,
-                         /*__is_vector=*/std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::stable_partition(__first, __last, __pred);
+_RandomAccessIterator __brick_stable_partition(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _UnaryPredicate __pred,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator, class _UnaryPredicate>
-_BidirectionalIterator
-__pattern_stable_partition(_Tag, _ExecutionPolicy&&, _BidirectionalIterator __first, _BidirectionalIterator __last,
-                           _UnaryPredicate __pred) noexcept
-{
-    return __internal::__brick_stable_partition(__first, __last, __pred, typename _Tag::__is_vector{});
+_BidirectionalIterator __pattern_stable_partition(
+    _Tag,
+    _ExecutionPolicy&&,
+    _BidirectionalIterator __first,
+    _BidirectionalIterator __last,
+    _UnaryPredicate __pred) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__pattern_stable_partition(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                           _RandomAccessIterator __last, _UnaryPredicate __pred) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_stable_partition(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _UnaryPredicate __pred) noexcept {
 
-    // partitioned range: elements before pivot satisfy pred (true part),
-    //                    elements after pivot don't satisfy pred (false part)
-    struct _PartitionRange
-    {
-        _RandomAccessIterator __begin;
-        _RandomAccessIterator __pivot;
-        _RandomAccessIterator __end;
-    };
+  struct _PartitionRange {
 
-    return __internal::__except_handler([&]() {
-        _PartitionRange __init{__last, __last, __last};
 
-        // lambda for merging two partitioned ranges to one partitioned range
-        auto __reductor = [](_PartitionRange __val1, _PartitionRange __val2) -> _PartitionRange
-        {
-            auto __size1 = __val1.__end - __val1.__pivot;
-            auto __new_begin = __val2.__begin - (__val1.__end - __val1.__begin);
+    auto __reductor = [](_PartitionRange __val1, _PartitionRange __val2) -> _PartitionRange {
+      auto __size1     = __val1.__end - __val1.__pivot;
 
-            // if all elements in left range satisfy pred then we can move new pivot to pivot of right range
-            if (__val1.__end == __val1.__pivot)
-            {
-                return {__new_begin, __val2.__pivot, __val2.__end};
-            }
-            // if true part of right range greater than false part of left range
-            // then we should swap the false part of left range and last part of true part of right range
-            else
-            {
-                __internal::__brick_rotate(__val1.__pivot, __val2.__begin, __val2.__pivot, _IsVector{});
-                return {__new_begin, __val2.__pivot - __size1, __val2.__end};
-            }
-        };
+      if (__val1.__end == __val1.__pivot) {
+      else {
 
-        _PartitionRange __result = __par_backend::__parallel_reduce(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, __init,
-            [&__pred, __reductor](_RandomAccessIterator __i, _RandomAccessIterator __j,
-                                  _PartitionRange __value) -> _PartitionRange
-            {
-                //1. serial stable_partition
-                _RandomAccessIterator __pivot = __internal::__brick_stable_partition(__i, __j, __pred, _IsVector{});
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        __init,
+        [&__pred,
+         __reductor](_RandomAccessIterator __i, _RandomAccessIterator __j, _PartitionRange __value) -> _PartitionRange {
+          // 1. serial stable_partition
 
-                // 2. merging of two ranges (left and right respectively)
-                return __reductor(__value, {__i, __pivot, __j});
-            },
-            __reductor);
-        return __result.__pivot;
-    });
 }
 
 //------------------------------------------------------------------------
 // partition_copy
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator1, class _OutputIterator2, class _UnaryPredicate>
-std::pair<_OutputIterator1, _OutputIterator2>
-__brick_partition_copy(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator1 __out_true,
-                       _OutputIterator2 __out_false, _UnaryPredicate __pred, /*is_vector=*/std::false_type) noexcept
-{
-    return std::partition_copy(__first, __last, __out_true, __out_false, __pred);
+std::pair<_OutputIterator1, _OutputIterator2> __brick_partition_copy(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator1 __out_true,
+    _OutputIterator2 __out_false,
+    _UnaryPredicate __pred,
+    /*is_vector=*/std::false_type) noexcept {
 }
 
-template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3,
+template <class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
           class _UnaryPredicate>
-std::pair<_RandomAccessIterator2, _RandomAccessIterator3>
-__brick_partition_copy(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last, _RandomAccessIterator2 __out_true,
-                       _RandomAccessIterator3 __out_false, _UnaryPredicate __pred,
-                       /*is_vector=*/std::true_type) noexcept
-{
+std::pair<_RandomAccessIterator2, _RandomAccessIterator3> __brick_partition_copy(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __out_true,
+    _RandomAccessIterator3 __out_false,
+    _UnaryPredicate __pred,
+    /*is_vector=*/std::true_type) noexcept {
 #if defined(_PSTL_MONOTONIC_PRESENT)
-    return __unseq_backend::__simd_partition_copy(__first, __last - __first, __out_true, __out_false, __pred);
 #else
-    return std::partition_copy(__first, __last, __out_true, __out_false, __pred);
 #endif
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator1, class _OutputIterator2,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _OutputIterator1,
+          class _OutputIterator2,
           class _UnaryPredicate>
-std::pair<_OutputIterator1, _OutputIterator2>
-__pattern_partition_copy(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                         _OutputIterator1 __out_true, _OutputIterator2 __out_false, _UnaryPredicate __pred) noexcept
-{
-    return __internal::__brick_partition_copy(__first, __last, __out_true, __out_false, __pred,
-                                              typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _RandomAccessIterator3, class _UnaryPredicate>
-std::pair<_RandomAccessIterator2, _RandomAccessIterator3>
-__pattern_partition_copy(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                         _RandomAccessIterator1 __last, _RandomAccessIterator2 __out_true,
-                         _RandomAccessIterator3 __out_false, _UnaryPredicate __pred)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+std::pair<_OutputIterator1, _OutputIterator2> __pattern_partition_copy(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator1 __out_true,
+    _OutputIterator2 __out_false,
+    _UnaryPredicate __pred) noexcept {
+  return __internal::__brick_partition_copy(
+      __first, __last, __out_true, __out_false, __pred, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
+          class _UnaryPredicate>
+std::pair<_RandomAccessIterator2, _RandomAccessIterator3> __pattern_partition_copy(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __out_true,
+    _RandomAccessIterator3 __out_false,
+    _UnaryPredicate __pred) {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::difference_type _DifferenceType;
-    typedef std::pair<_DifferenceType, _DifferenceType> _ReturnType;
-    const _DifferenceType __n = __last - __first;
-    if (_DifferenceType(1) < __n)
-    {
-        __par_backend::__buffer<bool> __mask_buf(__n);
-        return __internal::__except_handler(
-            [&__exec, __n, __first, __out_true, __out_false, __pred, &__mask_buf]()
-            {
-                bool* __mask = __mask_buf.get();
-                _ReturnType __m{};
-                __par_backend::__parallel_strict_scan(
-                    __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __n,
-                    std::make_pair(_DifferenceType(0), _DifferenceType(0)),
-                    [=](_DifferenceType __i, _DifferenceType __len) { // Reduce
-                        return __internal::__brick_calc_mask_1<_DifferenceType>(__first + __i, __first + (__i + __len),
-                                                                                __mask + __i, __pred, _IsVector{});
-                    },
-                    [](const _ReturnType& __x, const _ReturnType& __y) -> _ReturnType
-                    { return std::make_pair(__x.first + __y.first, __x.second + __y.second); }, // Combine
-                    [=](_DifferenceType __i, _DifferenceType __len, _ReturnType __initial) {    // Scan
-                        __internal::__brick_partition_by_mask(
-                            __first + __i, __first + (__i + __len), __out_true + __initial.first,
-                            __out_false + __initial.second, __mask + __i, _IsVector{});
-                    },
-                    [&__m](_ReturnType __total) { __m = __total; });
-                return std::make_pair(__out_true + __m.first, __out_false + __m.second);
-            });
-    }
-    // trivial sequence - use serial algorithm
-    return __internal::__brick_partition_copy(__first, __last, __out_true, __out_false, __pred, _IsVector{});
+  if (_DifferenceType(1) < __n) {
+    return __internal::__except_handler([&__exec, __n, __first, __out_true, __out_false, __pred, &__mask_buf]() {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __n,
+            return __internal::__brick_calc_mask_1<_DifferenceType>(
+                __first + __i, __first + (__i + __len), __mask + __i, __pred, _IsVector{});
+          [](const _ReturnType& __x, const _ReturnType& __y) -> _ReturnType {
+            return std::make_pair(__x.first + __y.first, __x.second + __y.second);
+          },                                                                       // Combine
+          [=](_DifferenceType __i, _DifferenceType __len, _ReturnType __initial) { // Scan
+                __first + __i,
+                __first + (__i + __len),
+                __out_true + __initial.first,
+                __out_false + __initial.second,
+                __mask + __i,
+                _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // sort
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare, class _IsMoveConstructible>
-void
-__pattern_sort(_Tag, _ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
-               _IsMoveConstructible) noexcept
-{
-    std::sort(__first, __last, __comp);
+void __pattern_sort(_Tag,
+                    _ExecutionPolicy&&,
+                    _RandomAccessIterator __first,
+                    _RandomAccessIterator __last,
+                    _Compare __comp,
+                    _IsMoveConstructible) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_sort(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-               _RandomAccessIterator __last, _Compare __comp, /*is_move_constructible=*/std::true_type)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+void __pattern_sort(__parallel_tag<_IsVector> __tag,
+                    _ExecutionPolicy&& __exec,
+                    _RandomAccessIterator __first,
+                    _RandomAccessIterator __last,
+                    _Compare __comp,
+                    /*is_move_constructible=*/std::true_type) {
 
-    __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_stable_sort(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp,
-                [](_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
-                { std::sort(__first, __last, __comp); });
-        });
+  __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        __comp,
+        [](_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) {
+          std::sort(__first, __last, __comp);
+        });
 }
 
 //------------------------------------------------------------------------
 // stable_sort
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_stable_sort(_Tag, _ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __last,
-                      _Compare __comp) noexcept
-{
-    std::stable_sort(__first, __last, __comp);
+void __pattern_stable_sort(
+    _Tag, _ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_stable_sort(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                      _RandomAccessIterator __last, _Compare __comp)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+void __pattern_stable_sort(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp) {
 
-    __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_stable_sort(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp,
-                [](_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
-                { std::stable_sort(__first, __last, __comp); });
-        });
+  __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        __comp,
+        [](_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) {
+          std::stable_sort(__first, __last, __comp);
+        });
 }
 
 //------------------------------------------------------------------------
 // partial_sort
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_partial_sort(_Tag, _ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __middle,
-                       _RandomAccessIterator __last, _Compare __comp) noexcept
-{
-    std::partial_sort(__first, __middle, __last, __comp);
+void __pattern_partial_sort(
+    _Tag,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __middle,
+    _RandomAccessIterator __last,
+    _Compare __comp) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_partial_sort(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                       _RandomAccessIterator __middle, _RandomAccessIterator __last, _Compare __comp)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+void __pattern_partial_sort(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __middle,
+    _RandomAccessIterator __last,
+    _Compare __comp) {
 
-    const auto __n = __middle - __first;
-    if (__n == 0)
-        return;
 
-    __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_stable_sort(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp,
-                [__n](_RandomAccessIterator __begin, _RandomAccessIterator __end, _Compare __comp)
-                {
-                    if (__n < __end - __begin)
-                        std::partial_sort(__begin, __begin + __n, __end, __comp);
-                    else
-                        std::sort(__begin, __end, __comp);
-                },
-                __n);
-        });
+  __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        __comp,
+        [__n](_RandomAccessIterator __begin, _RandomAccessIterator __end, _Compare __comp) {
 }
 
 //------------------------------------------------------------------------
 // partial_sort_copy
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator
-__pattern_partial_sort_copy(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                            _RandomAccessIterator __d_first, _RandomAccessIterator __d_last, _Compare __comp) noexcept
-{
-    return std::partial_sort_copy(__first, __last, __d_first, __d_last, __comp);
+_RandomAccessIterator __pattern_partial_sort_copy(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _RandomAccessIterator __d_first,
+    _RandomAccessIterator __d_last,
+    _Compare __comp) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Compare>
-_RandomAccessIterator2
-__pattern_partial_sort_copy(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first,
-                            _RandomAccessIterator1 __last, _RandomAccessIterator2 __d_first,
-                            _RandomAccessIterator2 __d_last, _Compare __comp)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator2 __pattern_partial_sort_copy(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __d_first,
+    _RandomAccessIterator2 __d_last,
+    _Compare __comp) {
 
-    if (__last == __first || __d_last == __d_first)
-    {
-        return __d_first;
-    }
-    auto __n1 = __last - __first;
-    auto __n2 = __d_last - __d_first;
-    return __internal::__except_handler([&]() {
-        if (__n2 >= __n1)
-        {
-            __par_backend::__parallel_stable_sort(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __d_first, __d_first + __n1, __comp,
-                [__first, __d_first](_RandomAccessIterator2 __i, _RandomAccessIterator2 __j, _Compare __comp)
-                {
-                    _RandomAccessIterator1 __i1 = __first + (__i - __d_first);
-                    _RandomAccessIterator1 __j1 = __first + (__j - __d_first);
+  if (__last == __first || __d_last == __d_first) {
+    if (__n2 >= __n1) {
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __d_first,
+          __d_first + __n1,
+          __comp,
+          [__first, __d_first](_RandomAccessIterator2 __i, _RandomAccessIterator2 __j, _Compare __comp) {
 
-                // 1. Copy elements from input to output
 #if !defined(_PSTL_ICC_18_OMP_SIMD_BROKEN)
-                    __internal::__brick_copy(__i1, __j1, __i, _IsVector{});
 #else
-                    std::copy(__i1, __j1, __i);
 #endif
-                    // 2. Sort elements in output sequence
-                    std::sort(__i, __j, __comp);
-                },
-                __n1);
-            return __d_first + __n1;
-        }
-        else
-        {
-            typedef typename std::iterator_traits<_RandomAccessIterator1>::value_type _T1;
-            typedef typename std::iterator_traits<_RandomAccessIterator2>::value_type _T2;
-            __par_backend::__buffer<_T1> __buf(__n1);
-            _T1* __r = __buf.get();
+    } else {
 
-            __par_backend::__parallel_stable_sort(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __r, __r + __n1, __comp,
-                [__n2, __first, __r](_T1* __i, _T1* __j, _Compare __comp)
-                {
-                    _RandomAccessIterator1 __it = __first + (__i - __r);
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __r,
+          __r + __n1,
+          __comp,
+          [__n2, __first, __r](_T1* __i, _T1* __j, _Compare __comp) {
 
-                    // 1. Copy elements from input to raw memory
-                    for (_T1* __k = __i; __k != __j; ++__k, ++__it)
-                    {
-                        ::new (__k) _T2(*__it);
-                    }
+            for (_T1* __k = __i; __k != __j; ++__k, ++__it) {
 
-                    // 2. Sort elements in temporary __buffer
-                    if (__n2 < __j - __i)
-                        std::partial_sort(__i, __i + __n2, __j, __comp);
-                    else
-                        std::sort(__i, __j, __comp);
-                },
-                __n2);
 
-            // 3. Move elements from temporary __buffer to output
-            __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __r, __r + __n2,
-                                          [__r, __d_first](_T1* __i, _T1* __j)
-                                          { __brick_move_destroy()(__i, __j, __d_first + (__i - __r), _IsVector{}); });
-            __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __r + __n2,
-                                          __r + __n1,
-                                          [](_T1* __i, _T1* __j) { __brick_destroy(__i, __j, _IsVector{}); });
+      __par_backend::__parallel_for(
+          __backend_tag{},
+          std::forward<_ExecutionPolicy>(__exec),
+          __r,
+          __r + __n2,
+          [__r, __d_first](_T1* __i, _T1* __j) {
+            __brick_move_destroy()(__i, __j, __d_first + (__i - __r), _IsVector{});
+          });
+      __par_backend::__parallel_for(
+          __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __r + __n2, __r + __n1, [](_T1* __i, _T1* __j) {
+            __brick_destroy(__i, __j, _IsVector{});
+          });
 
-            return __d_first + __n2;
-        }
-    });
 }
 
 //------------------------------------------------------------------------
 // adjacent_find
 //------------------------------------------------------------------------
 template <class _RandomAccessIterator, class _BinaryPredicate>
-_RandomAccessIterator
-__brick_adjacent_find(_RandomAccessIterator __first, _RandomAccessIterator __last, _BinaryPredicate __pred,
-                      /* IsVector = */ std::true_type, bool __or_semantic) noexcept
-{
-    return __unseq_backend::__simd_adjacent_find(__first, __last, __pred, __or_semantic);
+_RandomAccessIterator __brick_adjacent_find(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _BinaryPredicate __pred,
+    /* IsVector = */ std::true_type,
+    bool __or_semantic) noexcept {
 }
 
 template <class _ForwardIterator, class _BinaryPredicate>
-_ForwardIterator
-__brick_adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred,
-                      /* IsVector = */ std::false_type, bool) noexcept
-{
-    return std::adjacent_find(__first, __last, __pred);
+_ForwardIterator __brick_adjacent_find(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _BinaryPredicate __pred,
+    /* IsVector = */ std::false_type,
+    bool) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>
-_ForwardIterator
-__pattern_adjacent_find(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                        _BinaryPredicate __pred, bool __or_semantic) noexcept
-{
-    return __internal::__brick_adjacent_find(__first, __last, __pred, typename _Tag::__is_vector{}, __or_semantic);
+_ForwardIterator __pattern_adjacent_find(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _BinaryPredicate __pred,
+    bool __or_semantic) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _BinaryPredicate>
-_RandomAccessIterator
-__pattern_adjacent_find(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                        _RandomAccessIterator __last, _BinaryPredicate __pred, bool __or_semantic)
-{
-    if (__last - __first < 2)
-        return __last;
+_RandomAccessIterator __pattern_adjacent_find(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _BinaryPredicate __pred,
+    bool __or_semantic) {
 
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __par_backend::__parallel_reduce(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last, __last,
-                [__last, __pred, __or_semantic](_RandomAccessIterator __begin, _RandomAccessIterator __end,
-                                                _RandomAccessIterator __value) -> _RandomAccessIterator
-                {
-                    // TODO: investigate performance benefits from the use of shared variable for the result,
-                    // checking (compare_and_swap idiom) its __value at __first.
-                    if (__or_semantic && __value < __last)
-                    { //found
-                        __par_backend::__cancel_execution();
-                        return __value;
-                    }
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        __last,
+        [__last, __pred, __or_semantic](
+            _RandomAccessIterator __begin, _RandomAccessIterator __end, _RandomAccessIterator __value)
+            -> _RandomAccessIterator {
+          if (__or_semantic && __value < __last) { // found
 
-                    if (__value > __begin)
-                    {
-                        // modify __end to check the predicate on the boundary __values;
-                        // TODO: to use a custom range with boundaries overlapping
-                        // TODO: investigate what if we remove "if" below and run algorithm on range [__first, __last-1)
-                        // then check the pair [__last-1, __last)
-                        if (__end != __last)
-                            ++__end;
+          if (__value > __begin) {
 
-                        //correct the global result iterator if the "brick" returns a local "__last"
-                        const _RandomAccessIterator __res =
-                            __internal::__brick_adjacent_find(__begin, __end, __pred, _IsVector{}, __or_semantic);
-                        if (__res < __end)
-                            __value = __res;
-                    }
-                    return __value;
-                },
-                [](_RandomAccessIterator __x, _RandomAccessIterator __y) -> _RandomAccessIterator
-                { return __x < __y ? __x : __y; } //reduce a __value
-            );
-        });
+            // correct the global result iterator if the "brick" returns a local "__last"
+        [](_RandomAccessIterator __x, _RandomAccessIterator __y) -> _RandomAccessIterator {
+          return __x < __y ? __x : __y;
+        } // reduce a __value
 }
 
 //------------------------------------------------------------------------
 // nth_element
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_nth_element(_Tag, _ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __nth,
-                      _RandomAccessIterator __last, _Compare __comp) noexcept
-{
-    std::nth_element(__first, __nth, __last, __comp);
+void __pattern_nth_element(
+    _Tag,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __nth,
+    _RandomAccessIterator __last,
+    _Compare __comp) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_nth_element(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                      _RandomAccessIterator __nth, _RandomAccessIterator __last, _Compare __comp) noexcept
-{
-    if (__first == __last || __nth == __last)
-    {
-        return;
-    }
+void __pattern_nth_element(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __nth,
+    _RandomAccessIterator __last,
+    _Compare __comp) noexcept {
+  if (__first == __last || __nth == __last) {
 
-    using std::iter_swap;
-    typedef typename std::iterator_traits<_RandomAccessIterator>::value_type _Tp;
-    _RandomAccessIterator __x;
-    do
-    {
-        __x = __internal::__pattern_partition(__tag, std::forward<_ExecutionPolicy>(__exec), __first + 1, __last,
-                                              [&__comp, __first](const _Tp& __x) { return __comp(__x, *__first); });
-        --__x;
-        if (__x != __first)
-        {
-            iter_swap(__first, __x);
-        }
-        // if x > nth then our new range for partition is [first, x)
-        if (__x - __nth > 0)
-        {
-            __last = __x;
-        }
-        // if x < nth then our new range for partition is [x, last)
-        else if (__x - __nth < 0)
-        {
-            // if *x == *nth then we can start new partition with x+1
-            if (!__comp(*__nth, *__x) && !__comp(*__x, *__nth))
-            {
-                ++__x;
-            }
-            else
-            {
-                iter_swap(__nth, __x);
-            }
-            __first = __x;
-        }
-    } while (__x != __nth);
+  do {
+    __x = __internal::__pattern_partition(
+        __tag, std::forward<_ExecutionPolicy>(__exec), __first + 1, __last, [&__comp, __first](const _Tp& __x) {
+          return __comp(__x, *__first);
+        });
+    if (__x != __first) {
+    if (__x - __nth > 0) {
+    else if (__x - __nth < 0) {
+      if (!__comp(*__nth, *__x) && !__comp(*__x, *__nth)) {
+      } else {
 }
 
 //------------------------------------------------------------------------
 // fill, fill_n
 //------------------------------------------------------------------------
 template <class _RandomAccessIterator, class _Tp>
-void
-__brick_fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value,
-             /* __is_vector = */ std::true_type) noexcept
-{
-    __unseq_backend::__simd_fill_n(__first, __last - __first, __value);
+void __brick_fill(_RandomAccessIterator __first,
+                  _RandomAccessIterator __last,
+                  const _Tp& __value,
+                  /* __is_vector = */ std::true_type) noexcept {
 }
 
 template <class _ForwardIterator, class _Tp>
-void
-__brick_fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value,
-             /* __is_vector = */ std::false_type) noexcept
-{
-    std::fill(__first, __last, __value);
+void __brick_fill(_ForwardIterator __first,
+                  _ForwardIterator __last,
+                  const _Tp& __value,
+                  /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Tp>
-void
-__pattern_fill(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) noexcept
-{
-    __internal::__brick_fill(__first, __last, __value, typename _Tag::__is_vector{});
+void __pattern_fill(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Tp>
-_RandomAccessIterator
-__pattern_fill(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-               _RandomAccessIterator __last, const _Tp& __value)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_fill(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    const _Tp& __value) {
 
-    return __internal::__except_handler(
-        [&__exec, __first, __last, &__value]()
-        {
-            __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                          [&__value](_RandomAccessIterator __begin, _RandomAccessIterator __end)
-                                          { __internal::__brick_fill(__begin, __end, __value, _IsVector{}); });
-            return __last;
-        });
+  return __internal::__except_handler([&__exec, __first, __last, &__value]() {
+    __par_backend::__parallel_for(
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [&__value](_RandomAccessIterator __begin, _RandomAccessIterator __end) {
+          __internal::__brick_fill(__begin, __end, __value, _IsVector{});
+        });
 }
 
 template <class _RandomAccessIterator, class _Size, class _Tp>
 _RandomAccessIterator
-__brick_fill_n(_RandomAccessIterator __first, _Size __count, const _Tp& __value,
-               /* __is_vector = */ std::true_type) noexcept
-{
-    return __unseq_backend::__simd_fill_n(__first, __count, __value);
+__brick_fill_n(_RandomAccessIterator __first,
+               _Size __count,
+               const _Tp& __value,
+               /* __is_vector = */ std::true_type) noexcept {
 }
 
 template <class _OutputIterator, class _Size, class _Tp>
-_OutputIterator
-__brick_fill_n(_OutputIterator __first, _Size __count, const _Tp& __value, /* __is_vector = */ std::false_type) noexcept
-{
-    return std::fill_n(__first, __count, __value);
+_OutputIterator __brick_fill_n(
+    _OutputIterator __first, _Size __count, const _Tp& __value, /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _OutputIterator, class _Size, class _Tp>
 _OutputIterator
-__pattern_fill_n(_Tag, _ExecutionPolicy&&, _OutputIterator __first, _Size __count, const _Tp& __value) noexcept
-{
-    return __internal::__brick_fill_n(__first, __count, __value, typename _Tag::__is_vector{});
+__pattern_fill_n(_Tag, _ExecutionPolicy&&, _OutputIterator __first, _Size __count, const _Tp& __value) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Tp>
-_RandomAccessIterator
-__pattern_fill_n(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                 _Size __count, const _Tp& __value)
-{
-    return __internal::__pattern_fill(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __first + __count,
-                                      __value);
+_RandomAccessIterator __pattern_fill_n(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _Size __count,
+    const _Tp& __value) {
+  return __internal::__pattern_fill(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __first + __count, __value);
 }
 
 //------------------------------------------------------------------------
 // generate, generate_n
 //------------------------------------------------------------------------
 template <class _RandomAccessIterator, class _Generator>
-void
-__brick_generate(_RandomAccessIterator __first, _RandomAccessIterator __last, _Generator __g,
-                 /* is_vector = */ std::true_type) noexcept
-{
-    __unseq_backend::__simd_generate_n(__first, __last - __first, __g);
+void __brick_generate(_RandomAccessIterator __first,
+                      _RandomAccessIterator __last,
+                      _Generator __g,
+                      /* is_vector = */ std::true_type) noexcept {
 }
 
 template <class _ForwardIterator, class _Generator>
-void
-__brick_generate(_ForwardIterator __first, _ForwardIterator __last, _Generator __g,
-                 /* is_vector = */ std::false_type) noexcept
-{
-    std::generate(__first, __last, __g);
+void __brick_generate(_ForwardIterator __first,
+                      _ForwardIterator __last,
+                      _Generator __g,
+                      /* is_vector = */ std::false_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Generator>
-void
-__pattern_generate(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Generator __g) noexcept
-{
-    __internal::__brick_generate(__first, __last, __g, typename _Tag::__is_vector{});
+void __pattern_generate(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Generator __g) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Generator>
-_RandomAccessIterator
-__pattern_generate(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                   _RandomAccessIterator __last, _Generator __g)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_generate(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Generator __g) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                          [__g](_RandomAccessIterator __begin, _RandomAccessIterator __end)
-                                          { __internal::__brick_generate(__begin, __end, __g, _IsVector{}); });
-            return __last;
-        });
+  return __internal::__except_handler([&]() {
+    __par_backend::__parallel_for(
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [__g](_RandomAccessIterator __begin, _RandomAccessIterator __end) {
+          __internal::__brick_generate(__begin, __end, __g, _IsVector{});
+        });
 }
 
 template <class _RandomAccessIterator, class Size, class _Generator>
-_RandomAccessIterator
-__brick_generate_n(_RandomAccessIterator __first, Size __count, _Generator __g,
-                   /* is_vector = */ std::true_type) noexcept
-{
-    return __unseq_backend::__simd_generate_n(__first, __count, __g);
+_RandomAccessIterator __brick_generate_n(
+    _RandomAccessIterator __first,
+    Size __count,
+    _Generator __g,
+    /* is_vector = */ std::true_type) noexcept {
 }
 
 template <class OutputIterator, class Size, class _Generator>
 OutputIterator
-__brick_generate_n(OutputIterator __first, Size __count, _Generator __g, /* is_vector = */ std::false_type) noexcept
-{
-    return std::generate_n(__first, __count, __g);
+__brick_generate_n(OutputIterator __first, Size __count, _Generator __g, /* is_vector = */ std::false_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _OutputIterator, class _Size, class _Generator>
 _OutputIterator
-__pattern_generate_n(_Tag, _ExecutionPolicy&&, _OutputIterator __first, _Size __count, _Generator __g) noexcept
-{
-    return __internal::__brick_generate_n(__first, __count, __g, typename _Tag::__is_vector{});
+__pattern_generate_n(_Tag, _ExecutionPolicy&&, _OutputIterator __first, _Size __count, _Generator __g) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Size, class _Generator>
-_RandomAccessIterator
-__pattern_generate_n(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                     _Size __count, _Generator __g)
-{
-    static_assert(__are_random_access_iterators<_RandomAccessIterator>::value,
-                  "Pattern-brick error. Should be a random access iterator.");
-    return __internal::__pattern_generate(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __first + __count,
-                                          __g);
+_RandomAccessIterator __pattern_generate_n(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _Size __count,
+    _Generator __g) {
+  return __internal::__pattern_generate(__tag, std::forward<_ExecutionPolicy>(__exec), __first, __first + __count, __g);
 }
 
 //------------------------------------------------------------------------
 // remove
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _UnaryPredicate>
-_ForwardIterator
-__brick_remove_if(_ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred,
-                  /* __is_vector = */ std::false_type) noexcept
-{
-    return std::remove_if(__first, __last, __pred);
+_ForwardIterator __brick_remove_if(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _UnaryPredicate __pred,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__brick_remove_if(_RandomAccessIterator __first, _RandomAccessIterator __last, _UnaryPredicate __pred,
-                  /* __is_vector = */ std::true_type) noexcept
-{
+_RandomAccessIterator __brick_remove_if(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _UnaryPredicate __pred,
+    /* __is_vector = */ std::true_type) noexcept {
 #if defined(_PSTL_MONOTONIC_PRESENT)
-    return __unseq_backend::__simd_remove_if(__first, __last - __first, __pred);
 #else
-    return std::remove_if(__first, __last, __pred);
 #endif
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
-_ForwardIterator
-__pattern_remove_if(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                    _UnaryPredicate __pred) noexcept
-{
-    return __internal::__brick_remove_if(__first, __last, __pred, typename _Tag::__is_vector{});
+_ForwardIterator __pattern_remove_if(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _UnaryPredicate>
-_RandomAccessIterator
-__pattern_remove_if(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                    _RandomAccessIterator __last, _UnaryPredicate __pred) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::reference _ReferenceType;
+_RandomAccessIterator __pattern_remove_if(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _UnaryPredicate __pred) noexcept {
 
-    if (__first == __last || __first + 1 == __last)
-    {
-        // Trivial sequence - use serial algorithm
-        return __internal::__brick_remove_if(__first, __last, __pred, _IsVector{});
-    }
+  if (__first == __last || __first + 1 == __last) {
 
-    return __internal::__remove_elements(
-        __tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-        [&__pred](bool* __b, bool* __e, _RandomAccessIterator __it)
-        {
-            __internal::__brick_walk2(
-                __b, __e, __it, [&__pred](bool& __x, _ReferenceType __y) { __x = !__pred(__y); }, _IsVector{});
-        });
+      __tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      [&__pred](bool* __b, bool* __e, _RandomAccessIterator __it) {
 }
 
 //------------------------------------------------------------------------
 // merge
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator
-__brick_merge(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-              _ForwardIterator2 __last2, _OutputIterator __d_first, _Compare __comp,
-              /* __is_vector = */ std::false_type) noexcept
-{
-    return std::merge(__first1, __last1, __first2, __last2, __d_first, __comp);
+_OutputIterator __brick_merge(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __d_first,
+    _Compare __comp,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__brick_merge(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-              _RandomAccessIterator2 __last2, _RandomAccessIterator3 __d_first, _Compare __comp,
-              /* __is_vector = */ std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::merge(__first1, __last1, __first2, __last2, __d_first, __comp);
+_RandomAccessIterator3 __brick_merge(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __d_first,
+    _Compare __comp,
+    /* __is_vector = */ std::true_type) noexcept {
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_merge(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                _ForwardIterator2 __first2, _ForwardIterator2 __last2, _OutputIterator __d_first,
-                _Compare __comp) noexcept
-{
-    return __internal::__brick_merge(__first1, __last1, __first2, __last2, __d_first, __comp,
-                                     typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__pattern_merge(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                _RandomAccessIterator3 __d_first, _Compare __comp)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_OutputIterator __pattern_merge(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __d_first,
+    _Compare __comp) noexcept {
+  return __internal::__brick_merge(
+      __first1, __last1, __first2, __last2, __d_first, __comp, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
+          class _Compare>
+_RandomAccessIterator3 __pattern_merge(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __d_first,
+    _Compare __comp) {
 
-    __par_backend::__parallel_merge(
-        __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __d_first,
-        __comp,
-        [](_RandomAccessIterator1 __f1, _RandomAccessIterator1 __l1, _RandomAccessIterator2 __f2,
-           _RandomAccessIterator2 __l2, _RandomAccessIterator3 __f3, _Compare __comp)
-        { return __internal::__brick_merge(__f1, __l1, __f2, __l2, __f3, __comp, _IsVector{}); });
-    return __d_first + (__last1 - __first1) + (__last2 - __first2);
+      __backend_tag{},
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      __last2,
+      __d_first,
+      [](_RandomAccessIterator1 __f1,
+         _RandomAccessIterator1 __l1,
+         _RandomAccessIterator2 __f2,
+         _RandomAccessIterator2 __l2,
+         _RandomAccessIterator3 __f3,
+         _Compare __comp) { return __internal::__brick_merge(__f1, __l1, __f2, __l2, __f3, __comp, _IsVector{}); });
 }
 
 //------------------------------------------------------------------------
 // inplace_merge
 //------------------------------------------------------------------------
 template <class _BidirectionalIterator, class _Compare>
-void
-__brick_inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
-                      _Compare __comp, /* __is_vector = */ std::false_type) noexcept
-{
-    std::inplace_merge(__first, __middle, __last, __comp);
+void __brick_inplace_merge(
+    _BidirectionalIterator __first,
+    _BidirectionalIterator __middle,
+    _BidirectionalIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _Compare>
-void
-__brick_inplace_merge(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
-                      _Compare __comp, /* __is_vector = */ std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial")
-    std::inplace_merge(__first, __middle, __last, __comp);
+void __brick_inplace_merge(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __middle,
+    _RandomAccessIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _BidirectionalIterator, class _Compare>
-void
-__pattern_inplace_merge(_Tag, _ExecutionPolicy&&, _BidirectionalIterator __first, _BidirectionalIterator __middle,
-                        _BidirectionalIterator __last, _Compare __comp) noexcept
-{
-    __internal::__brick_inplace_merge(__first, __middle, __last, __comp, typename _Tag::__is_vector{});
+void __pattern_inplace_merge(
+    _Tag,
+    _ExecutionPolicy&&,
+    _BidirectionalIterator __first,
+    _BidirectionalIterator __middle,
+    _BidirectionalIterator __last,
+    _Compare __comp) noexcept {
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-void
-__pattern_inplace_merge(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                        _RandomAccessIterator __middle, _RandomAccessIterator __last, _Compare __comp)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+void __pattern_inplace_merge(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __middle,
+    _RandomAccessIterator __last,
+    _Compare __comp) {
 
-    if (__first == __last || __first == __middle || __middle == __last)
-    {
-        return;
-    }
-    typedef typename std::iterator_traits<_RandomAccessIterator>::value_type _Tp;
-    auto __n = __last - __first;
-    __par_backend::__buffer<_Tp> __buf(__n);
-    _Tp* __r = __buf.get();
-    __internal::__except_handler(
-        [&]()
-        {
-            auto __move_values = [](_RandomAccessIterator __x, _Tp* __z)
-            {
-                __internal::__invoke_if_else(
-                    std::is_trivial<_Tp>(), [&]() { *__z = std::move(*__x); },
-                    [&]() { ::new (std::addressof(*__z)) _Tp(std::move(*__x)); });
-            };
+  if (__first == __last || __first == __middle || __middle == __last) {
+  __internal::__except_handler([&]() {
+    auto __move_values = [](_RandomAccessIterator __x, _Tp* __z) {
+          std::is_trivial<_Tp>(),
+          [&]() { *__z = std::move(*__x); },
 
-            auto __move_sequences = [](_RandomAccessIterator __first1, _RandomAccessIterator __last1, _Tp* __first2)
-            { return __internal::__brick_uninitialized_move(__first1, __last1, __first2, _IsVector()); };
+    auto __move_sequences = [](_RandomAccessIterator __first1, _RandomAccessIterator __last1, _Tp* __first2) {
+      return __internal::__brick_uninitialized_move(__first1, __last1, __first2, _IsVector());
+    };
 
-            __par_backend::__parallel_merge(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __middle, __middle, __last, __r,
-                __comp,
-                [__n, __move_values, __move_sequences](_RandomAccessIterator __f1, _RandomAccessIterator __l1,
-                                                       _RandomAccessIterator __f2, _RandomAccessIterator __l2,
-                                                       _Tp* __f3, _Compare __comp)
-                {
-                    (__utils::__serial_move_merge(__n))(__f1, __l1, __f2, __l2, __f3, __comp, __move_values,
-                                                        __move_values, __move_sequences, __move_sequences);
-                    return __f3 + (__l1 - __f1) + (__l2 - __f2);
-                });
-            __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __r, __r + __n,
-                                          [__r, __first](_Tp* __i, _Tp* __j)
-                                          { __brick_move_destroy()(__i, __j, __first + (__i - __r), _IsVector{}); });
-        });
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __middle,
+        __middle,
+        __last,
+        __r,
+        [__n, __move_values, __move_sequences](
+            _RandomAccessIterator __f1,
+            _RandomAccessIterator __l1,
+            _RandomAccessIterator __f2,
+            _RandomAccessIterator __l2,
+            _Tp* __f3,
+            _Compare __comp) {
+          (__utils::__serial_move_merge(__n))(
+              __f1, __l1, __f2, __l2, __f3, __comp, __move_values, __move_values, __move_sequences, __move_sequences);
+    __par_backend::__parallel_for(
+        __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __r, __r + __n, [__r, __first](_Tp* __i, _Tp* __j) {
+          __brick_move_destroy()(__i, __j, __first + (__i - __r), _IsVector{});
+        });
 }
 
 //------------------------------------------------------------------------
 // includes
 //------------------------------------------------------------------------
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-bool
-__pattern_includes(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                   _ForwardIterator2 __first2, _ForwardIterator2 __last2, _Compare __comp) noexcept
-{
-    return std::includes(__first1, __last1, __first2, __last2, __comp);
+bool __pattern_includes(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _Compare __comp) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Compare>
-bool
-__pattern_includes(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                   _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                   _Compare __comp)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+bool __pattern_includes(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _Compare __comp) {
 
-    if (__first2 >= __last2)
-        return true;
 
-    if (__first1 >= __last1 || __comp(*__first2, *__first1) || __comp(*(__last1 - 1), *(__last2 - 1)))
-        return false;
 
-    __first1 = std::lower_bound(__first1, __last1, *__first2, __comp);
-    if (__first1 == __last1)
-        return false;
 
-    if (__last2 - __first2 == 1)
-        return !__comp(*__first1, *__first2) && !__comp(*__first2, *__first1);
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return !__internal::__parallel_or(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first2, __last2,
-                [__first1, __last1, __first2, __last2, &__comp](_RandomAccessIterator2 __i, _RandomAccessIterator2 __j)
-                {
-                    _PSTL_ASSERT(__j > __i);
-                    //_PSTL_ASSERT(__j - __i > 1);
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first2,
+        __last2,
+        [__first1, __last1, __first2, __last2, &__comp](_RandomAccessIterator2 __i, _RandomAccessIterator2 __j) {
 
-                    //1. moving boundaries to "consume" subsequence of equal elements
-                    auto __is_equal = [&__comp](_RandomAccessIterator2 __a, _RandomAccessIterator2 __b) -> bool
-                    { return !__comp(*__a, *__b) && !__comp(*__b, *__a); };
+          // 1. moving boundaries to "consume" subsequence of equal elements
+          auto __is_equal = [&__comp](_RandomAccessIterator2 __a, _RandomAccessIterator2 __b) -> bool {
+            return !__comp(*__a, *__b) && !__comp(*__b, *__a);
+          };
 
-                    //1.1 left bound, case "aaa[aaaxyz...]" - searching "x"
-                    if (__i > __first2 && __is_equal(__i, __i - 1))
-                    {
-                        //whole subrange continues to content equal elements - return "no op"
-                        if (__is_equal(__i, __j - 1))
-                            return false;
+          // 1.1 left bound, case "aaa[aaaxyz...]" - searching "x"
+          if (__i > __first2 && __is_equal(__i, __i - 1)) {
+            // whole subrange continues to content equal elements - return "no op"
 
-                        __i = std::upper_bound(__i, __last2, *__i, __comp);
-                    }
 
-                    //1.2 right bound, case "[...aaa]aaaxyz" - searching "x"
-                    if (__j < __last2 && __is_equal(__j - 1, __j))
-                        __j = std::upper_bound(__j, __last2, *__j, __comp);
+          // 1.2 right bound, case "[...aaa]aaaxyz" - searching "x"
 
-                    //2. testing is __a subsequence of the second range included into the first range
-                    auto __b = std::lower_bound(__first1, __last1, *__i, __comp);
+          // 2. testing is __a subsequence of the second range included into the first range
 
-                    _PSTL_ASSERT(!__comp(*(__last1 - 1), *__b));
-                    _PSTL_ASSERT(!__comp(*(__j - 1), *__i));
-                    return !std::includes(__b, __last1, __i, __j, __comp);
-                });
-        });
 }
 
 constexpr auto __set_algo_cut_off = 1000;
 
-template <class _IsVector, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2,
-          class _OutputIterator, class _Compare, class _SizeFunction, class _SetOP>
-_OutputIterator
-__parallel_set_op(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _ForwardIterator1 __first1,
-                  _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2,
-                  _OutputIterator __result, _Compare __comp, _SizeFunction __size_func, _SetOP __set_op)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
+          class _Compare,
+          class _SizeFunction,
+          class _SetOP>
+_OutputIterator __parallel_set_op(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp,
+    _SizeFunction __size_func,
+    _SetOP __set_op) {
 
-    typedef typename std::iterator_traits<_ForwardIterator1>::difference_type _DifferenceType;
-    typedef typename std::iterator_traits<_OutputIterator>::value_type _Tp;
 
-    struct _SetRange
-    {
-        _DifferenceType __pos, __len, __buf_pos;
-        bool
-        empty() const
-        {
-            return __len == 0;
-        }
-    };
+  struct _SetRange {
+    bool empty() const { return __len == 0; }
 
-    const _DifferenceType __n1 = __last1 - __first1;
-    const _DifferenceType __n2 = __last2 - __first2;
 
-    __par_backend::__buffer<_Tp> __buf(__size_func(__n1, __n2));
 
-    return __internal::__except_handler(
-        [&__exec, __n1, __first1, __last1, __first2, __last2, __result, __comp, __size_func, __set_op, &__buf]()
-        {
-            auto __buffer = __buf.get();
-            _DifferenceType __m{};
-            auto __scan = [=](_DifferenceType, _DifferenceType, const _SetRange& __s) { // Scan
-                if (!__s.empty())
-                    __brick_move_destroy()(__buffer + __s.__buf_pos, __buffer + (__s.__buf_pos + __s.__len),
-                                           __result + __s.__pos, _IsVector{});
-            };
-            __par_backend::__parallel_strict_scan(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __n1, _SetRange{0, 0, 0}, //-1, 0},
-                [=](_DifferenceType __i, _DifferenceType __len) {                                  // Reduce
-                    //[__b; __e) - a subrange of the first sequence, to reduce
-                    _ForwardIterator1 __b = __first1 + __i, __e = __first1 + (__i + __len);
+      [&__exec, __n1, __first1, __last1, __first2, __last2, __result, __comp, __size_func, __set_op, &__buf]() {
+            __brick_move_destroy()(
+                __buffer + __s.__buf_pos, __buffer + (__s.__buf_pos + __s.__len), __result + __s.__pos, _IsVector{});
+            __backend_tag{},
+            std::forward<_ExecutionPolicy>(__exec),
+            __n1,
+            _SetRange{0, 0, 0},                               //-1, 0},
+            [=](_DifferenceType __i, _DifferenceType __len) { // Reduce
 
-                    //try searching for the first element which not equal to *__b
-                    if (__b != __first1)
-                        __b = std::upper_bound(__b, __last1, *__b, __comp);
+              // try searching for the first element which not equal to *__b
 
-                    //try searching for the first element which not equal to *__e
-                    if (__e != __last1)
-                        __e = std::upper_bound(__e, __last1, *__e, __comp);
+              // try searching for the first element which not equal to *__e
 
-                    //check is [__b; __e) empty
-                    if (__e - __b < 1)
-                    {
-                        _ForwardIterator2 __bb = __last2;
-                        if (__b != __last1)
-                            __bb = std::lower_bound(__first2, __last2, *__b, __comp);
+              // check is [__b; __e) empty
+              if (__e - __b < 1) {
 
-                        const _DifferenceType __buf_pos = __size_func((__b - __first1), (__bb - __first2));
-                        return _SetRange{0, 0, __buf_pos};
-                    }
 
-                    //try searching for "corresponding" subrange [__bb; __ee) in the second sequence
-                    _ForwardIterator2 __bb = __first2;
-                    if (__b != __first1)
-                        __bb = std::lower_bound(__first2, __last2, *__b, __comp);
+              // try searching for "corresponding" subrange [__bb; __ee) in the second sequence
 
-                    _ForwardIterator2 __ee = __last2;
-                    if (__e != __last1)
-                        __ee = std::lower_bound(__bb, __last2, *__e, __comp);
 
-                    const _DifferenceType __buf_pos = __size_func((__b - __first1), (__bb - __first2));
-                    auto __buffer_b = __buffer + __buf_pos;
-                    auto __res = __set_op(__b, __e, __bb, __ee, __buffer_b, __comp);
+              auto __buffer_b                 = __buffer + __buf_pos;
+              auto __res                      = __set_op(__b, __e, __bb, __ee, __buffer_b, __comp);
 
-                    return _SetRange{0, __res - __buffer_b, __buf_pos};
-                },
-                [](const _SetRange& __a, const _SetRange& __b) { // Combine
-                    if (__b.__buf_pos > __a.__buf_pos || ((__b.__buf_pos == __a.__buf_pos) && !__b.empty()))
-                        return _SetRange{__a.__pos + __a.__len + __b.__pos, __b.__len, __b.__buf_pos};
-                    return _SetRange{__b.__pos + __b.__len + __a.__pos, __a.__len, __a.__buf_pos};
-                },
-                __scan,                                     // Scan
-                [&__m, &__scan](const _SetRange& __total) { // Apex
-                    //final scan
-                    __scan(0, 0, __total);
-                    __m = __total.__pos + __total.__len;
-                });
-            return __result + __m;
-        });
+              // final scan
 }
 
-//a shared parallel pattern for '__pattern_set_union' and '__pattern_set_symmetric_difference'
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
-          class _Compare, class _SetUnionOp>
-_OutputIterator
-__parallel_set_union_op(_Tag __tag, _ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                        _ForwardIterator2 __first2, _ForwardIterator2 __last2, _OutputIterator __result,
-                        _Compare __comp, _SetUnionOp __set_union_op)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+// a shared parallel pattern for '__pattern_set_union' and '__pattern_set_symmetric_difference'
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
+          class _Compare,
+          class _SetUnionOp>
+_OutputIterator __parallel_set_union_op(
+    _Tag __tag,
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp,
+    _SetUnionOp __set_union_op) {
 
-    typedef typename std::iterator_traits<_ForwardIterator1>::difference_type _DifferenceType;
 
-    const auto __n1 = __last1 - __first1;
-    const auto __n2 = __last2 - __first2;
 
-    auto copy_range1 = [](_ForwardIterator1 __begin, _ForwardIterator1 __end, _OutputIterator __res)
-    { return __internal::__brick_copy(__begin, __end, __res, typename _Tag::__is_vector{}); };
-    auto copy_range2 = [](_ForwardIterator2 __begin, _ForwardIterator2 __end, _OutputIterator __res)
-    { return __internal::__brick_copy(__begin, __end, __res, typename _Tag::__is_vector{}); };
+  auto copy_range1 = [](_ForwardIterator1 __begin, _ForwardIterator1 __end, _OutputIterator __res) {
+    return __internal::__brick_copy(__begin, __end, __res, typename _Tag::__is_vector{});
+  };
+  auto copy_range2 = [](_ForwardIterator2 __begin, _ForwardIterator2 __end, _OutputIterator __res) {
+    return __internal::__brick_copy(__begin, __end, __res, typename _Tag::__is_vector{});
+  };
 
-    // {1} {}: parallel copying just first sequence
-    if (__n2 == 0)
-        return __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                                                 __result, copy_range1);
+    return __internal::__pattern_walk2_brick(
+        __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __result, copy_range1);
 
-    // {} {2}: parallel copying justmake  second sequence
-    if (__n1 == 0)
-        return __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first2, __last2,
-                                                 __result, copy_range2);
+    return __internal::__pattern_walk2_brick(
+        __tag, std::forward<_ExecutionPolicy>(__exec), __first2, __last2, __result, copy_range2);
 
-    // testing  whether the sequences are intersected
-    _ForwardIterator1 __left_bound_seq_1 = std::lower_bound(__first1, __last1, *__first2, __comp);
 
-    if (__left_bound_seq_1 == __last1)
-    {
-        //{1} < {2}: seq2 is wholly greater than seq1, so, do parallel copying seq1 and seq2
-        __par_backend::__parallel_invoke(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec),
-            [=]
-            {
-                __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                                                  __result, copy_range1);
-            },
-            [=]
-            {
-                __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first2, __last2,
-                                                  __result + __n1, copy_range2);
-            });
-        return __result + __n1 + __n2;
-    }
+  if (__left_bound_seq_1 == __last1) {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        [=] {
+          __internal::__pattern_walk2_brick(
+              __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __result, copy_range1);
+        [=] {
+          __internal::__pattern_walk2_brick(
+              __tag, std::forward<_ExecutionPolicy>(__exec), __first2, __last2, __result + __n1, copy_range2);
 
-    // testing  whether the sequences are intersected
-    _ForwardIterator2 __left_bound_seq_2 = std::lower_bound(__first2, __last2, *__first1, __comp);
 
-    if (__left_bound_seq_2 == __last2)
-    {
-        //{2} < {1}: seq2 is wholly greater than seq1, so, do parallel copying seq1 and seq2
-        __par_backend::__parallel_invoke(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec),
-            [=]
-            {
-                __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first2, __last2,
-                                                  __result, copy_range2);
-            },
-            [=]
-            {
-                __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                                                  __result + __n2, copy_range1);
-            });
-        return __result + __n1 + __n2;
-    }
+  if (__left_bound_seq_2 == __last2) {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        [=] {
+          __internal::__pattern_walk2_brick(
+              __tag, std::forward<_ExecutionPolicy>(__exec), __first2, __last2, __result, copy_range2);
+        [=] {
+          __internal::__pattern_walk2_brick(
+              __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __result + __n2, copy_range1);
 
-    const auto __m1 = __left_bound_seq_1 - __first1;
-    if (__m1 > __set_algo_cut_off)
-    {
-        auto __res_or = __result;
-        __result += __m1; //we know proper offset due to [first1; left_bound_seq_1) < [first2; last2)
-        __par_backend::__parallel_invoke(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec),
-            //do parallel copying of [first1; left_bound_seq_1)
-            [=]
-            {
-                __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                                  __left_bound_seq_1, __res_or, copy_range1);
-            },
-            [=, &__result]
-            {
-                __result = __internal::__parallel_set_op(
-                    __tag, std::forward<_ExecutionPolicy>(__exec), __left_bound_seq_1, __last1, __first2, __last2,
-                    __result, __comp, [](_DifferenceType __n, _DifferenceType __m) { return __n + __m; },
-                    __set_union_op);
-            });
-        return __result;
-    }
+  if (__m1 > __set_algo_cut_off) {
+    __result += __m1; // we know proper offset due to [first1; left_bound_seq_1) < [first2; last2)
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        // do parallel copying of [first1; left_bound_seq_1)
+        [=] {
+          __internal::__pattern_walk2_brick(
+              __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __left_bound_seq_1, __res_or, copy_range1);
+        [=, &__result] {
+              __tag,
+              std::forward<_ExecutionPolicy>(__exec),
+              __left_bound_seq_1,
+              __last1,
+              __first2,
+              __last2,
+              __result,
+              __comp,
+              [](_DifferenceType __n, _DifferenceType __m) { return __n + __m; },
 
-    const auto __m2 = __left_bound_seq_2 - __first2;
-    _PSTL_ASSERT(__m1 == 0 || __m2 == 0);
-    if (__m2 > __set_algo_cut_off)
-    {
-        auto __res_or = __result;
-        __result += __m2; //we know proper offset due to [first2; left_bound_seq_2) < [first1; last1)
-        __par_backend::__parallel_invoke(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec),
-            //do parallel copying of [first2; left_bound_seq_2)
-            [=]
-            {
-                __internal::__pattern_walk2_brick(__tag, std::forward<_ExecutionPolicy>(__exec), __first2,
-                                                  __left_bound_seq_2, __res_or, copy_range2);
-            },
-            [=, &__result]
-            {
-                __result = __internal::__parallel_set_op(
-                    __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __left_bound_seq_2, __last2,
-                    __result, __comp, [](_DifferenceType __n, _DifferenceType __m) { return __n + __m; },
-                    __set_union_op);
-            });
-        return __result;
-    }
+  if (__m2 > __set_algo_cut_off) {
+    __result += __m2; // we know proper offset due to [first2; left_bound_seq_2) < [first1; last1)
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        // do parallel copying of [first2; left_bound_seq_2)
+        [=] {
+          __internal::__pattern_walk2_brick(
+              __tag, std::forward<_ExecutionPolicy>(__exec), __first2, __left_bound_seq_2, __res_or, copy_range2);
+        [=, &__result] {
+              __tag,
+              std::forward<_ExecutionPolicy>(__exec),
+              __first1,
+              __last1,
+              __left_bound_seq_2,
+              __last2,
+              __result,
+              __comp,
+              [](_DifferenceType __n, _DifferenceType __m) { return __n + __m; },
 
-    return __internal::__parallel_set_op(
-        __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp,
-        [](_DifferenceType __n, _DifferenceType __m) { return __n + __m; }, __set_union_op);
+      __tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      __last2,
+      __result,
+      __comp,
+      [](_DifferenceType __n, _DifferenceType __m) { return __n + __m; },
+      __set_union_op);
 }
 
 //------------------------------------------------------------------------
 // set_union
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator
-__brick_set_union(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-                  _ForwardIterator2 __last2, _OutputIterator __result, _Compare __comp,
-                  /*__is_vector=*/std::false_type) noexcept
-{
-    return std::set_union(__first1, __last1, __first2, __last2, __result, __comp);
+_OutputIterator __brick_set_union(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <typename _IsVector>
-struct __BrickCopyConstruct
-{
-    template <typename _ForwardIterator, typename _OutputIterator>
-    _OutputIterator
-    operator()(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result)
-    {
-        return __brick_uninitialized_copy(__first, __last, __result, _IsVector());
-    }
+struct __BrickCopyConstruct {
+  _OutputIterator operator()(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result) {
 };
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _OutputIterator, class _Compare>
-_OutputIterator
-__brick_set_union(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-                  _RandomAccessIterator2 __last2, _OutputIterator __result, _Compare __comp,
-                  /*__is_vector=*/std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::set_union(__first1, __last1, __first2, __last2, __result, __comp);
+_OutputIterator __brick_set_union(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_union(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                    _ForwardIterator2 __first2, _ForwardIterator2 __last2, _OutputIterator __result,
-                    _Compare __comp) noexcept
-{
-    return __internal::__brick_set_union(__first1, __last1, __first2, __last2, __result, __comp,
-                                         typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _OutputIterator, class _Compare>
-_OutputIterator
-__pattern_set_union(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                    _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                    _OutputIterator __result, _Compare __comp)
-{
-
-    const auto __n1 = __last1 - __first1;
-    const auto __n2 = __last2 - __first2;
+_OutputIterator __pattern_set_union(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp) noexcept {
+  return __internal::__brick_set_union(
+      __first1, __last1, __first2, __last2, __result, __comp, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _OutputIterator,
+          class _Compare>
+_OutputIterator __pattern_set_union(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp) {
 
-    // use serial algorithm
-    if (__n1 + __n2 <= __set_algo_cut_off)
-        return std::set_union(__first1, __last1, __first2, __last2, __result, __comp);
 
-    typedef typename std::iterator_traits<_OutputIterator>::value_type _Tp;
-    return __parallel_set_union_op(
-        __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp,
-        [](_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-           _RandomAccessIterator2 __last2, _Tp* __result, _Compare __comp)
-        {
-            return __pstl::__utils::__set_union_construct(__first1, __last1, __first2, __last2, __result, __comp,
-                                                          __BrickCopyConstruct<_IsVector>());
-        });
+      __tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      __last2,
+      __result,
+      __comp,
+      [](_RandomAccessIterator1 __first1,
+         _RandomAccessIterator1 __last1,
+         _RandomAccessIterator2 __first2,
+         _RandomAccessIterator2 __last2,
+         _Tp* __result,
+         _Compare __comp) {
+        return __pstl::__utils::__set_union_construct(
+            __first1, __last1, __first2, __last2, __result, __comp, __BrickCopyConstruct<_IsVector>());
 }
 
 //------------------------------------------------------------------------
 // set_intersection
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator
-__brick_set_intersection(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-                         _ForwardIterator2 __last2, _OutputIterator __result, _Compare __comp,
-                         /*__is_vector=*/std::false_type) noexcept
-{
-    return std::set_intersection(__first1, __last1, __first2, __last2, __result, __comp);
+_OutputIterator __brick_set_intersection(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__brick_set_intersection(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
-                         _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                         _RandomAccessIterator3 __result, _Compare __comp,
-                         /*__is_vector=*/std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::set_intersection(__first1, __last1, __first2, __last2, __result, __comp);
+_RandomAccessIterator3 __brick_set_intersection(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __result,
+    _Compare __comp,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_intersection(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                           _ForwardIterator2 __first2, _ForwardIterator2 __last2, _OutputIterator __result,
-                           _Compare __comp) noexcept
-{
-    return __internal::__brick_set_intersection(__first1, __last1, __first2, __last2, __result, __comp,
-                                                typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__pattern_set_intersection(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                           _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-                           _RandomAccessIterator2 __last2, _RandomAccessIterator3 __result, _Compare __comp)
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator3>::value_type _Tp;
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::difference_type _DifferenceType;
+_OutputIterator __pattern_set_intersection(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp) noexcept {
+  return __internal::__brick_set_intersection(
+      __first1, __last1, __first2, __last2, __result, __comp, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
+          class _Compare>
+_RandomAccessIterator3 __pattern_set_intersection(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __result,
+    _Compare __comp) {
 
-    const auto __n1 = __last1 - __first1;
-    const auto __n2 = __last2 - __first2;
 
-    // intersection is empty
-    if (__n1 == 0 || __n2 == 0)
-        return __result;
 
-    // testing  whether the sequences are intersected
-    _RandomAccessIterator1 __left_bound_seq_1 = std::lower_bound(__first1, __last1, *__first2, __comp);
-    //{1} < {2}: seq 2 is wholly greater than seq 1, so, the intersection is empty
-    if (__left_bound_seq_1 == __last1)
-        return __result;
 
-    // testing  whether the sequences are intersected
-    _RandomAccessIterator2 __left_bound_seq_2 = std::lower_bound(__first2, __last2, *__first1, __comp);
-    //{2} < {1}: seq 1 is wholly greater than seq 2, so, the intersection is empty
-    if (__left_bound_seq_2 == __last2)
-        return __result;
 
-    const auto __m1 = __last1 - __left_bound_seq_1 + __n2;
-    if (__m1 > __set_algo_cut_off)
-    {
-        //we know proper offset due to [first1; left_bound_seq_1) < [first2; last2)
-        return __internal::__parallel_set_op(
-            __tag, std::forward<_ExecutionPolicy>(__exec), __left_bound_seq_1, __last1, __first2, __last2, __result,
-            __comp, [](_DifferenceType __n, _DifferenceType __m) { return std::min(__n, __m); },
-            [](_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-               _RandomAccessIterator2 __last2, _Tp* __result, _Compare __comp) {
-                return __pstl::__utils::__set_intersection_construct(__first1, __last1, __first2, __last2, __result,
-                                                                     __comp);
-            });
-    }
+  if (__m1 > __set_algo_cut_off) {
+    // we know proper offset due to [first1; left_bound_seq_1) < [first2; last2)
+        __tag,
+        std::forward<_ExecutionPolicy>(__exec),
+        __left_bound_seq_1,
+        __last1,
+        __first2,
+        __last2,
+        __result,
+        __comp,
+        [](_DifferenceType __n, _DifferenceType __m) { return std::min(__n, __m); },
+        [](_RandomAccessIterator1 __first1,
+           _RandomAccessIterator1 __last1,
+           _RandomAccessIterator2 __first2,
+           _RandomAccessIterator2 __last2,
+           _Tp* __result,
+           _Compare __comp) {
+          return __pstl::__utils::__set_intersection_construct(__first1, __last1, __first2, __last2, __result, __comp);
 
-    const auto __m2 = __last2 - __left_bound_seq_2 + __n1;
-    if (__m2 > __set_algo_cut_off)
-    {
-        //we know proper offset due to [first2; left_bound_seq_2) < [first1; last1)
-        __result = __internal::__parallel_set_op(
-            __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __left_bound_seq_2, __last2, __result,
-            __comp, [](_DifferenceType __n, _DifferenceType __m) { return std::min(__n, __m); },
-            [](_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-               _RandomAccessIterator2 __last2, _Tp* __result, _Compare __comp) {
-                return __pstl::__utils::__set_intersection_construct(__first2, __last2, __first1, __last1, __result,
-                                                                     __comp);
-            });
-        return __result;
-    }
+  if (__m2 > __set_algo_cut_off) {
+    // we know proper offset due to [first2; left_bound_seq_2) < [first1; last1)
+        __tag,
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        __left_bound_seq_2,
+        __last2,
+        __result,
+        __comp,
+        [](_DifferenceType __n, _DifferenceType __m) { return std::min(__n, __m); },
+        [](_RandomAccessIterator1 __first1,
+           _RandomAccessIterator1 __last1,
+           _RandomAccessIterator2 __first2,
+           _RandomAccessIterator2 __last2,
+           _Tp* __result,
+           _Compare __comp) {
+          return __pstl::__utils::__set_intersection_construct(__first2, __last2, __first1, __last1, __result, __comp);
 
-    // [left_bound_seq_1; last1) and [left_bound_seq_2; last2) - use serial algorithm
-    return std::set_intersection(__left_bound_seq_1, __last1, __left_bound_seq_2, __last2, __result, __comp);
 }
 
 //------------------------------------------------------------------------
 // set_difference
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator
-__brick_set_difference(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-                       _ForwardIterator2 __last2, _OutputIterator __result, _Compare __comp,
-                       /*__is_vector=*/std::false_type) noexcept
-{
-    return std::set_difference(__first1, __last1, __first2, __last2, __result, __comp);
+_OutputIterator __brick_set_difference(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__brick_set_difference(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-                       _RandomAccessIterator2 __last2, _RandomAccessIterator3 __result, _Compare __comp,
-                       /*__is_vector=*/std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::set_difference(__first1, __last1, __first2, __last2, __result, __comp);
+_RandomAccessIterator3 __brick_set_difference(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __result,
+    _Compare __comp,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_difference(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                         _ForwardIterator2 __first2, _ForwardIterator2 __last2, _OutputIterator __result,
-                         _Compare __comp) noexcept
-{
-    return __internal::__brick_set_difference(__first1, __last1, __first2, __last2, __result, __comp,
-                                              typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__pattern_set_difference(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                         _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-                         _RandomAccessIterator2 __last2, _RandomAccessIterator3 __result, _Compare __comp)
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator3>::value_type _Tp;
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::difference_type _DifferenceType;
+_OutputIterator __pattern_set_difference(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp) noexcept {
+  return __internal::__brick_set_difference(
+      __first1, __last1, __first2, __last2, __result, __comp, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
+          class _Compare>
+_RandomAccessIterator3 __pattern_set_difference(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __result,
+    _Compare __comp) {
 
-    const auto __n1 = __last1 - __first1;
-    const auto __n2 = __last2 - __first2;
 
-    // {} \ {2}: the difference is empty
-    if (__n1 == 0)
-        return __result;
 
-    // {1} \ {}: parallel copying just first sequence
-    if (__n2 == 0)
-        return __internal::__pattern_walk2_brick(
-            __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __result,
-            [](_RandomAccessIterator1 __begin, _RandomAccessIterator1 __end, _RandomAccessIterator3 __res)
-            { return __internal::__brick_copy(__begin, __end, __res, _IsVector{}); });
+        __tag,
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        __result,
+        [](_RandomAccessIterator1 __begin, _RandomAccessIterator1 __end, _RandomAccessIterator3 __res) {
+          return __internal::__brick_copy(__begin, __end, __res, _IsVector{});
+        });
 
-    // testing  whether the sequences are intersected
-    _RandomAccessIterator1 __left_bound_seq_1 = std::lower_bound(__first1, __last1, *__first2, __comp);
-    //{1} < {2}: seq 2 is wholly greater than seq 1, so, parallel copying just first sequence
-    if (__left_bound_seq_1 == __last1)
-        return __internal::__pattern_walk2_brick(
-            __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __result,
-            [](_RandomAccessIterator1 __begin, _RandomAccessIterator1 __end, _RandomAccessIterator3 __res)
-            { return __internal::__brick_copy(__begin, __end, __res, _IsVector{}); });
+        __tag,
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        __result,
+        [](_RandomAccessIterator1 __begin, _RandomAccessIterator1 __end, _RandomAccessIterator3 __res) {
+          return __internal::__brick_copy(__begin, __end, __res, _IsVector{});
+        });
 
-    // testing  whether the sequences are intersected
-    _RandomAccessIterator2 __left_bound_seq_2 = std::lower_bound(__first2, __last2, *__first1, __comp);
-    //{2} < {1}: seq 1 is wholly greater than seq 2, so, parallel copying just first sequence
-    if (__left_bound_seq_2 == __last2)
-        return __internal::__pattern_walk2_brick(
-            __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __result,
-            [](_RandomAccessIterator1 __begin, _RandomAccessIterator1 __end, _RandomAccessIterator3 __res)
-            { return __internal::__brick_copy(__begin, __end, __res, _IsVector{}); });
+        __tag,
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        __result,
+        [](_RandomAccessIterator1 __begin, _RandomAccessIterator1 __end, _RandomAccessIterator3 __res) {
+          return __internal::__brick_copy(__begin, __end, __res, _IsVector{});
+        });
 
-    if (__n1 + __n2 > __set_algo_cut_off)
-        return __parallel_set_op(
-            __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp,
-            [](_DifferenceType __n, _DifferenceType) { return __n; },
-            [](_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-               _RandomAccessIterator2 __last2, _Tp* __result, _Compare __comp)
-            {
-                return __pstl::__utils::__set_difference_construct(__first1, __last1, __first2, __last2, __result,
-                                                                   __comp, __BrickCopyConstruct<_IsVector>());
-            });
+        __tag,
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        __first2,
+        __last2,
+        __result,
+        __comp,
+        [](_RandomAccessIterator1 __first1,
+           _RandomAccessIterator1 __last1,
+           _RandomAccessIterator2 __first2,
+           _RandomAccessIterator2 __last2,
+           _Tp* __result,
+           _Compare __comp) {
+          return __pstl::__utils::__set_difference_construct(
+              __first1, __last1, __first2, __last2, __result, __comp, __BrickCopyConstruct<_IsVector>());
 
-    // use serial algorithm
-    return std::set_difference(__first1, __last1, __first2, __last2, __result, __comp);
 }
 
 //------------------------------------------------------------------------
 // set_symmetric_difference
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator, class _Compare>
-_OutputIterator
-__brick_set_symmetric_difference(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-                                 _ForwardIterator2 __last2, _OutputIterator __result, _Compare __comp,
-                                 /*__is_vector=*/std::false_type) noexcept
-{
-    return std::set_symmetric_difference(__first1, __last1, __first2, __last2, __result, __comp);
+_OutputIterator __brick_set_symmetric_difference(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp,
+    /*__is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__brick_set_symmetric_difference(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
-                                 _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                                 _RandomAccessIterator3 __result, _Compare __comp,
-                                 /*__is_vector=*/std::true_type) noexcept
-{
-    _PSTL_PRAGMA_MESSAGE("Vectorized algorithm unimplemented, redirected to serial");
-    return std::set_symmetric_difference(__first1, __last1, __first2, __last2, __result, __comp);
+_RandomAccessIterator3 __brick_set_symmetric_difference(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __result,
+    _Compare __comp,
+    /*__is_vector=*/std::true_type) noexcept {
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _OutputIterator,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _OutputIterator,
           class _Compare>
-_OutputIterator
-__pattern_set_symmetric_difference(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                                   _ForwardIterator2 __first2, _ForwardIterator2 __last2, _OutputIterator __result,
-                                   _Compare __comp) noexcept
-{
-    return __internal::__brick_set_symmetric_difference(__first1, __last1, __first2, __last2, __result, __comp,
-                                                        typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _RandomAccessIterator3, class _Compare>
-_RandomAccessIterator3
-__pattern_set_symmetric_difference(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec,
-                                   _RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
-                                   _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                                   _RandomAccessIterator3 __result, _Compare __comp)
-{
-
-    const auto __n1 = __last1 - __first1;
-    const auto __n2 = __last2 - __first2;
+_OutputIterator __pattern_set_symmetric_difference(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _OutputIterator __result,
+    _Compare __comp) noexcept {
+  return __internal::__brick_set_symmetric_difference(
+      __first1, __last1, __first2, __last2, __result, __comp, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _RandomAccessIterator3,
+          class _Compare>
+_RandomAccessIterator3 __pattern_set_symmetric_difference(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _RandomAccessIterator3 __result,
+    _Compare __comp) {
 
-    // use serial algorithm
-    if (__n1 + __n2 <= __set_algo_cut_off)
-        return std::set_symmetric_difference(__first1, __last1, __first2, __last2, __result, __comp);
 
-    typedef typename std::iterator_traits<_RandomAccessIterator3>::value_type _Tp;
-    return __internal::__parallel_set_union_op(
-        __tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp,
-        [](_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-           _RandomAccessIterator2 __last2, _Tp* __result, _Compare __comp)
-        {
-            return __pstl::__utils::__set_symmetric_difference_construct(__first1, __last1, __first2, __last2, __result,
-                                                                         __comp, __BrickCopyConstruct<_IsVector>());
-        });
+      __tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      __last2,
+      __result,
+      __comp,
+      [](_RandomAccessIterator1 __first1,
+         _RandomAccessIterator1 __last1,
+         _RandomAccessIterator2 __first2,
+         _RandomAccessIterator2 __last2,
+         _Tp* __result,
+         _Compare __comp) {
+        return __pstl::__utils::__set_symmetric_difference_construct(
+            __first1, __last1, __first2, __last2, __result, __comp, __BrickCopyConstruct<_IsVector>());
 }
 
 //------------------------------------------------------------------------
 // is_heap_until
 //------------------------------------------------------------------------
 
 template <class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator
-__brick_is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
-                      /* __is_vector = */ std::false_type) noexcept
-{
-    return std::is_heap_until(__first, __last, __comp);
+_RandomAccessIterator __brick_is_heap_until(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator
-__brick_is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
-                      /* __is_vector = */ std::true_type) noexcept
-{
-    if (__last - __first < 2)
-        return __last;
-    typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type _SizeType;
-    return __unseq_backend::__simd_first(
-        __first, _SizeType(0), __last - __first,
-        [&__comp](_RandomAccessIterator __it, _SizeType __i) { return __comp(__it[(__i - 1) / 2], __it[__i]); });
+_RandomAccessIterator __brick_is_heap_until(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::true_type) noexcept {
+      __first, _SizeType(0), __last - __first, [&__comp](_RandomAccessIterator __it, _SizeType __i) {
+        return __comp(__it[(__i - 1) / 2], __it[__i]);
+      });
 }
 
 template <class _Tag, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator
-__pattern_is_heap_until(_Tag, _ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __last,
-                        _Compare __comp) noexcept
-{
-    return __internal::__brick_is_heap_until(__first, __last, __comp, typename _Tag::__is_vector{});
+_RandomAccessIterator __pattern_is_heap_until(
+    _Tag, _ExecutionPolicy&&, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) noexcept {
 }
 
 template <class _RandomAccessIterator, class _DifferenceType, class _Compare>
-_RandomAccessIterator
-__is_heap_until_local(_RandomAccessIterator __first, _DifferenceType __begin, _DifferenceType __end, _Compare __comp,
-                      /* __is_vector = */ std::false_type) noexcept
-{
-    _DifferenceType __i = __begin;
-    for (; __i < __end; ++__i)
-    {
-        if (__comp(__first[(__i - 1) / 2], __first[__i]))
-        {
-            break;
-        }
-    }
-    return __first + __i;
+_RandomAccessIterator __is_heap_until_local(
+    _RandomAccessIterator __first,
+    _DifferenceType __begin,
+    _DifferenceType __end,
+    _Compare __comp,
+    /* __is_vector = */ std::false_type) noexcept {
+  for (; __i < __end; ++__i) {
+    if (__comp(__first[(__i - 1) / 2], __first[__i])) {
 }
 
 template <class _RandomAccessIterator, class _DifferenceType, class _Compare>
-_RandomAccessIterator
-__is_heap_until_local(_RandomAccessIterator __first, _DifferenceType __begin, _DifferenceType __end, _Compare __comp,
-                      /* __is_vector = */ std::true_type) noexcept
-{
-    return __unseq_backend::__simd_first(
-        __first, __begin, __end,
-        [&__comp](_RandomAccessIterator __it, _DifferenceType __i) { return __comp(__it[(__i - 1) / 2], __it[__i]); });
+_RandomAccessIterator __is_heap_until_local(
+    _RandomAccessIterator __first,
+    _DifferenceType __begin,
+    _DifferenceType __end,
+    _Compare __comp,
+    /* __is_vector = */ std::true_type) noexcept {
+      __first, __begin, __end, [&__comp](_RandomAccessIterator __it, _DifferenceType __i) {
+        return __comp(__it[(__i - 1) / 2], __it[__i]);
+      });
 }
 
 template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
-_RandomAccessIterator
-__pattern_is_heap_until(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                        _RandomAccessIterator __last, _Compare __comp) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_RandomAccessIterator __pattern_is_heap_until(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp) noexcept {
 
-    if (__last - __first < 2)
-        return __last;
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __parallel_find(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                [__first, __comp](_RandomAccessIterator __i, _RandomAccessIterator __j) {
-                    return __internal::__is_heap_until_local(__first, __i - __first, __j - __first, __comp,
-                                                             _IsVector{});
-                },
-                std::less<typename std::iterator_traits<_RandomAccessIterator>::difference_type>(), /*is_first=*/true);
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+          return __internal::__is_heap_until_local(__first, __i - __first, __j - __first, __comp, _IsVector{});
+        std::less<typename std::iterator_traits<_RandomAccessIterator>::difference_type>(),
+        /*is_first=*/true);
 }
 
 //------------------------------------------------------------------------
 // min_element
 //------------------------------------------------------------------------
 
 template <typename _ForwardIterator, typename _Compare>
-_ForwardIterator
-__brick_min_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp,
-                    /* __is_vector = */ std::false_type) noexcept
-{
-    return std::min_element(__first, __last, __comp);
+_ForwardIterator __brick_min_element(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <typename _RandomAccessIterator, typename _Compare>
-_RandomAccessIterator
-__brick_min_element(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
-                    /* __is_vector = */ std::true_type) noexcept
-{
+_RandomAccessIterator __brick_min_element(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::true_type) noexcept {
 #if defined(_PSTL_UDR_PRESENT)
-    return __unseq_backend::__simd_min_element(__first, __last - __first, __comp);
 #else
-    return std::min_element(__first, __last, __comp);
 #endif
 }
 
 template <typename _Tag, typename _ExecutionPolicy, typename _ForwardIterator, typename _Compare>
-_ForwardIterator
-__pattern_min_element(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                      _Compare __comp) noexcept
-{
-    return __internal::__brick_min_element(__first, __last, __comp, typename _Tag::__is_vector{});
+_ForwardIterator __pattern_min_element(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp) noexcept {
 }
 
 template <typename _IsVector, typename _ExecutionPolicy, typename _RandomAccessIterator, typename _Compare>
-_RandomAccessIterator
-__pattern_min_element(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                      _RandomAccessIterator __last, _Compare __comp)
-{
-    if (__first == __last)
-        return __last;
+_RandomAccessIterator __pattern_min_element(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp) {
 
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __par_backend::__parallel_reduce(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first + 1, __last, __first,
-                [=](_RandomAccessIterator __begin, _RandomAccessIterator __end,
-                    _RandomAccessIterator __init) -> _RandomAccessIterator
-                {
-                    const _RandomAccessIterator subresult =
-                        __internal::__brick_min_element(__begin, __end, __comp, _IsVector{});
-                    return __internal::__cmp_iterators_by_values(__init, subresult, __comp);
-                },
-                [=](_RandomAccessIterator __it1, _RandomAccessIterator __it2) -> _RandomAccessIterator
-                { return __internal::__cmp_iterators_by_values(__it1, __it2, __comp); });
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first + 1,
+        __last,
+        __first,
+        [=](_RandomAccessIterator __begin, _RandomAccessIterator __end, _RandomAccessIterator __init)
+            -> _RandomAccessIterator {
+          const _RandomAccessIterator subresult = __internal::__brick_min_element(__begin, __end, __comp, _IsVector{});
+        [=](_RandomAccessIterator __it1, _RandomAccessIterator __it2) -> _RandomAccessIterator {
+          return __internal::__cmp_iterators_by_values(__it1, __it2, __comp);
+        });
 }
 
 //------------------------------------------------------------------------
 // minmax_element
 //------------------------------------------------------------------------
 
 template <typename _ForwardIterator, typename _Compare>
-std::pair<_ForwardIterator, _ForwardIterator>
-__brick_minmax_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp,
-                       /* __is_vector = */ std::false_type) noexcept
-{
-    return std::minmax_element(__first, __last, __comp);
+std::pair<_ForwardIterator, _ForwardIterator> __brick_minmax_element(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <typename _RandomAccessIterator, typename _Compare>
-std::pair<_RandomAccessIterator, _RandomAccessIterator>
-__brick_minmax_element(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
-                       /* __is_vector = */ std::true_type) noexcept
-{
+std::pair<_RandomAccessIterator, _RandomAccessIterator> __brick_minmax_element(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp,
+    /* __is_vector = */ std::true_type) noexcept {
 #if defined(_PSTL_UDR_PRESENT)
-    return __unseq_backend::__simd_minmax_element(__first, __last - __first, __comp);
 #else
-    return std::minmax_element(__first, __last, __comp);
 #endif
 }
 
 template <typename _Tag, typename _ExecutionPolicy, typename _ForwardIterator, typename _Compare>
-std::pair<_ForwardIterator, _ForwardIterator>
-__pattern_minmax_element(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                         _Compare __comp) noexcept
-{
-    return __internal::__brick_minmax_element(__first, __last, __comp, typename _Tag::__is_vector{});
+std::pair<_ForwardIterator, _ForwardIterator> __pattern_minmax_element(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp) noexcept {
 }
 
 template <typename _IsVector, typename _ExecutionPolicy, typename _RandomAccessIterator, typename _Compare>
-std::pair<_RandomAccessIterator, _RandomAccessIterator>
-__pattern_minmax_element(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                         _RandomAccessIterator __last, _Compare __comp)
-{
-    if (__first == __last)
-        return std::make_pair(__first, __first);
+std::pair<_RandomAccessIterator, _RandomAccessIterator> __pattern_minmax_element(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Compare __comp) {
 
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
 
-    return __internal::__except_handler([&]() {
-        typedef std::pair<_RandomAccessIterator, _RandomAccessIterator> _Result;
 
-        return __par_backend::__parallel_reduce(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first + 1, __last,
-            std::make_pair(__first, __first),
-            [=](_RandomAccessIterator __begin, _RandomAccessIterator __end, _Result __init) -> _Result
-            {
-                const _Result __subresult = __internal::__brick_minmax_element(__begin, __end, __comp, _IsVector{});
-                return std::make_pair(
-                    __internal::__cmp_iterators_by_values(__subresult.first, __init.first, __comp),
-                    __internal::__cmp_iterators_by_values(__init.second, __subresult.second, std::not_fn(__comp)));
-            },
-            [=](_Result __p1, _Result __p2) -> _Result
-            {
-                return std::make_pair(
-                    __internal::__cmp_iterators_by_values(__p1.first, __p2.first, __comp),
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first + 1,
+        __last,
+        [=](_RandomAccessIterator __begin, _RandomAccessIterator __end, _Result __init) -> _Result {
+        [=](_Result __p1, _Result __p2) -> _Result {
+          return std::make_pair(__internal::__cmp_iterators_by_values(__p1.first, __p2.first, __comp),
                                 __internal::__cmp_iterators_by_values(__p2.second, __p1.second, std::not_fn(__comp)));
-            });
-    });
 }
 
 //------------------------------------------------------------------------
 // mismatch
 //------------------------------------------------------------------------
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-std::pair<_ForwardIterator1, _ForwardIterator2>
-__mismatch_serial(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-                  _ForwardIterator2 __last2, _BinaryPredicate __pred)
-{
+std::pair<_ForwardIterator1, _ForwardIterator2> __mismatch_serial(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _BinaryPredicate __pred) {
 #if defined(_PSTL_CPP14_2RANGE_MISMATCH_EQUAL_PRESENT)
-    return std::mismatch(__first1, __last1, __first2, __last2, __pred);
 #else
-    for (; __first1 != __last1 && __first2 != __last2 && __pred(*__first1, *__first2); ++__first1, ++__first2)
-    {
-    }
-    return std::make_pair(__first1, __first2);
+  for (; __first1 != __last1 && __first2 != __last2 && __pred(*__first1, *__first2); ++__first1, ++__first2) {
 #endif
 }
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
-std::pair<_ForwardIterator1, _ForwardIterator2>
-__brick_mismatch(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-                 _ForwardIterator2 __last2, _Predicate __pred, /* __is_vector = */ std::false_type) noexcept
-{
-    return __mismatch_serial(__first1, __last1, __first2, __last2, __pred);
+std::pair<_ForwardIterator1, _ForwardIterator2> __brick_mismatch(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _Predicate __pred,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Predicate>
-std::pair<_RandomAccessIterator1, _RandomAccessIterator2>
-__brick_mismatch(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
-                 _RandomAccessIterator2 __last2, _Predicate __pred, /* __is_vector = */ std::true_type) noexcept
-{
-    auto __n = std::min(__last1 - __first1, __last2 - __first2);
-    return __unseq_backend::__simd_first(__first1, __n, __first2, std::not_fn(__pred));
+std::pair<_RandomAccessIterator1, _RandomAccessIterator2> __brick_mismatch(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _Predicate __pred,
+    /* __is_vector = */ std::true_type) noexcept {
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
-std::pair<_ForwardIterator1, _ForwardIterator2>
-__pattern_mismatch(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                   _ForwardIterator2 __first2, _ForwardIterator2 __last2, _Predicate __pred) noexcept
-{
-    return __internal::__brick_mismatch(__first1, __last1, __first2, __last2, __pred, typename _Tag::__is_vector{});
+std::pair<_ForwardIterator1, _ForwardIterator2> __pattern_mismatch(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _Predicate __pred) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Predicate>
-std::pair<_RandomAccessIterator1, _RandomAccessIterator2>
-__pattern_mismatch(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                   _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                   _Predicate __pred) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+std::pair<_RandomAccessIterator1, _RandomAccessIterator2> __pattern_mismatch(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _Predicate __pred) noexcept {
 
-    return __internal::__except_handler([&]() {
-        auto __n = std::min(__last1 - __first1, __last2 - __first2);
-        auto __result = __internal::__parallel_find(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __first1 + __n,
-            [__first1, __first2, __pred](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-            {
-                return __internal::__brick_mismatch(__i, __j, __first2 + (__i - __first1), __first2 + (__j - __first1),
-                                                    __pred, _IsVector{})
-                    .first;
-            },
-            std::less<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(), /*is_first=*/true);
-        return std::make_pair(__result, __first2 + (__result - __first1));
-    });
+    auto __n      = std::min(__last1 - __first1, __last2 - __first2);
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __first1 + __n,
+        [__first1, __first2, __pred](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+          return __internal::__brick_mismatch(
+                     __i, __j, __first2 + (__i - __first1), __first2 + (__j - __first1), __pred, _IsVector{})
+        std::less<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(),
+        /*is_first=*/true);
 }
 
 //------------------------------------------------------------------------
 // lexicographical_compare
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-bool
-__brick_lexicographical_compare(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-                                _ForwardIterator2 __last2, _Compare __comp,
-                                /* __is_vector = */ std::false_type) noexcept
-{
-    return std::lexicographical_compare(__first1, __last1, __first2, __last2, __comp);
+bool __brick_lexicographical_compare(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _Compare __comp,
+    /* __is_vector = */ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Compare>
-bool
-__brick_lexicographical_compare(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
-                                _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _Compare __comp,
-                                /* __is_vector = */ std::true_type) noexcept
-{
-    if (__first2 == __last2)
-    { // if second sequence is empty
-        return false;
-    }
-    else if (__first1 == __last1)
-    { // if first sequence is empty
-        return true;
-    }
-    else
-    {
-        typedef typename std::iterator_traits<_RandomAccessIterator1>::reference ref_type1;
-        typedef typename std::iterator_traits<_RandomAccessIterator2>::reference ref_type2;
-        --__last1;
-        --__last2;
-        auto __n = std::min(__last1 - __first1, __last2 - __first2);
-        std::pair<_RandomAccessIterator1, _RandomAccessIterator2> __result = __unseq_backend::__simd_first(
-            __first1, __n, __first2, [__comp](const ref_type1 __x, const ref_type2 __y) mutable {
-                return __comp(__x, __y) || __comp(__y, __x);
-            });
+bool __brick_lexicographical_compare(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _Compare __comp,
+    /* __is_vector = */ std::true_type) noexcept {
+  if (__first2 == __last2) {        // if second sequence is empty
+  } else if (__first1 == __last1) { // if first sequence is empty
+  } else {
 
-        if (__result.first == __last1 && __result.second != __last2)
-        { // if first sequence shorter than second
-            return !__comp(*__result.second, *__result.first);
-        }
-        else
-        { // if second sequence shorter than first or both have the same number of elements
-            return __comp(*__result.first, *__result.second);
-        }
-    }
+    if (__result.first == __last1 && __result.second != __last2) { // if first sequence shorter than second
+    } else { // if second sequence shorter than first or both have the same number of elements
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-bool
-__pattern_lexicographical_compare(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                                  _ForwardIterator2 __first2, _ForwardIterator2 __last2, _Compare __comp) noexcept
-{
-    return __internal::__brick_lexicographical_compare(__first1, __last1, __first2, __last2, __comp,
-                                                       typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+bool __pattern_lexicographical_compare(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _Compare __comp) noexcept {
+  return __internal::__brick_lexicographical_compare(
+      __first1, __last1, __first2, __last2, __comp, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _Compare>
-bool
-__pattern_lexicographical_compare(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec,
-                                  _RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
-                                  _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2,
-                                  _Compare __comp) noexcept
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+bool __pattern_lexicographical_compare(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _RandomAccessIterator2 __last2,
+    _Compare __comp) noexcept {
 
-    if (__first2 == __last2)
-    { // if second sequence is empty
-        return false;
-    }
-    else if (__first1 == __last1)
-    { // if first sequence is empty
-        return true;
-    }
-    else
-    {
-        typedef typename std::iterator_traits<_RandomAccessIterator1>::reference _RefType1;
-        typedef typename std::iterator_traits<_RandomAccessIterator2>::reference _RefType2;
-        --__last1;
-        --__last2;
-        auto __n = std::min(__last1 - __first1, __last2 - __first2);
-        auto __result = __internal::__parallel_find(
-            __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __first1 + __n,
-            [__first1, __first2, &__comp](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j)
-            {
-                return __internal::__brick_mismatch(
-                           __i, __j, __first2 + (__i - __first1), __first2 + (__j - __first1),
-                           [&__comp](const _RefType1 __x, const _RefType2 __y)
-                           { return !__comp(__x, __y) && !__comp(__y, __x); },
-                           _IsVector{})
-                    .first;
-            },
-            std::less<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(), /*is_first=*/true);
+  if (__first2 == __last2) {        // if second sequence is empty
+  } else if (__first1 == __last1) { // if first sequence is empty
+  } else {
+    auto __n      = std::min(__last1 - __first1, __last2 - __first2);
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __first1 + __n,
+        [__first1, __first2, &__comp](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j) {
+                     __i,
+                     __j,
+                     __first2 + (__i - __first1),
+                     __first2 + (__j - __first1),
+                     [&__comp](const _RefType1 __x, const _RefType2 __y) {
+                       return !__comp(__x, __y) && !__comp(__y, __x);
+                     },
+        std::less<typename std::iterator_traits<_RandomAccessIterator1>::difference_type>(),
+        /*is_first=*/true);
 
-        if (__result == __last1 && __first2 + (__result - __first1) != __last2)
-        { // if first sequence shorter than second
-            return !__comp(*(__first2 + (__result - __first1)), *__result);
-        }
-        else
-        { // if second sequence shorter than first or both have the same number of elements
-            return __comp(*__result, *(__first2 + (__result - __first1)));
-        }
-    }
+    if (__result == __last1 && __first2 + (__result - __first1) != __last2) { // if first sequence shorter than second
+    } else { // if second sequence shorter than first or both have the same number of elements
 }
 
 } // namespace __internal
 } // namespace __pstl
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_ALGORITHM_IMPL_H */

libcxx/include/pstl/internal/execution_defs.h

 #define _PSTL_EXECUTION_POLICY_DEFS_H
 
 #include <type_traits>
 
 #include "pstl_config.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace execution
-{
-inline namespace v1
-{
+namespace __pstl {
+namespace execution {
+inline namespace v1 {
 
 // 2.4, Sequential execution policy
-class sequenced_policy
-{
-};
+class sequenced_policy {};
 
 // 2.5, Parallel execution policy
-class parallel_policy
-{
-};
+class parallel_policy {};
 
 // 2.6, Parallel+Vector execution policy
-class parallel_unsequenced_policy
-{
-};
-
-class unsequenced_policy
-{
-};
+class parallel_unsequenced_policy {};
+
+class unsequenced_policy {};
 
 // 2.8, Execution policy objects
 constexpr sequenced_policy seq{};
 constexpr parallel_policy par{};
 constexpr parallel_unsequenced_policy par_unseq{};
 constexpr unsequenced_policy unseq{};
 
 // 2.3, Execution policy type trait
 template <class T>
-struct is_execution_policy : std::false_type
-{
-};
+struct is_execution_policy : std::false_type {};
 
 template <>
-struct is_execution_policy<__pstl::execution::sequenced_policy> : std::true_type
-{
-};
+struct is_execution_policy<__pstl::execution::sequenced_policy> : std::true_type {};
 template <>
-struct is_execution_policy<__pstl::execution::parallel_policy> : std::true_type
-{
-};
+struct is_execution_policy<__pstl::execution::parallel_policy> : std::true_type {};
 template <>
-struct is_execution_policy<__pstl::execution::parallel_unsequenced_policy> : std::true_type
-{
-};
+struct is_execution_policy<__pstl::execution::parallel_unsequenced_policy> : std::true_type {};
 template <>
-struct is_execution_policy<__pstl::execution::unsequenced_policy> : std::true_type
-{
-};
+struct is_execution_policy<__pstl::execution::unsequenced_policy> : std::true_type {};
 
 #if defined(_PSTL_CPP14_VARIABLE_TEMPLATES_PRESENT)
 template <class T>
 constexpr bool is_execution_policy_v = __pstl::execution::is_execution_policy<T>::value;
 #endif
 
 } // namespace v1
 } // namespace execution
 
-namespace __internal
-{
+namespace __internal {
 template <class ExecPolicy, class T>
 using __enable_if_execution_policy =
     typename std::enable_if<__pstl::execution::is_execution_policy<typename std::decay<ExecPolicy>::type>::value,
                             T>::type;
 
 template <class _IsVector>
 struct __serial_tag;
 template <class _IsVector>

libcxx/include/pstl/internal/execution_impl.h

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _PSTL_EXECUTION_IMPL_H
 #define _PSTL_EXECUTION_IMPL_H
 
 #include <iterator>
 #include <type_traits>
 
-#include "pstl_config.h"
 #include "execution_defs.h"
+#include "pstl_config.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace __internal
-{
+namespace __pstl {
+namespace __internal {
 
 template <typename _IteratorTag, typename... _IteratorTypes>
 using __are_iterators_of = std::conjunction<
     std::is_base_of<_IteratorTag, typename std::iterator_traits<std::decay_t<_IteratorTypes>>::iterator_category>...>;
 
 template <typename... _IteratorTypes>
 using __are_random_access_iterators = __are_iterators_of<std::random_access_iterator_tag, _IteratorTypes...>;
 
-struct __serial_backend_tag
-{
-};
-struct __tbb_backend_tag
-{
-};
-struct __openmp_backend_tag
-{
-};
+struct __serial_backend_tag {};
+struct __tbb_backend_tag {};
+struct __openmp_backend_tag {};
 
 #if defined(_PSTL_PAR_BACKEND_TBB)
 using __par_backend_tag = __tbb_backend_tag;
 #elif defined(_PSTL_PAR_BACKEND_OPENMP)
 using __par_backend_tag = __openmp_backend_tag;
 #elif defined(_PSTL_PAR_BACKEND_SERIAL)
 using __par_backend_tag = __serial_backend_tag;
 #else
-#    error "A parallel backend must be specified";
+#  error "A parallel backend must be specified";
 #endif
 
 template <class _IsVector>
-struct __serial_tag
-{
-    using __is_vector = _IsVector;
+struct __serial_tag {
 };
 
 template <class _IsVector>
-struct __parallel_tag
-{
-    using __is_vector = _IsVector;
-    // backend tag can be change depending on
-    // TBB availability in the environment
-    using __backend_tag = __par_backend_tag;
+struct __parallel_tag {
 };
 
 template <class _IsVector, class... _IteratorTypes>
-using __tag_type = typename std::conditional<__internal::__are_random_access_iterators<_IteratorTypes...>::value,
-                                             __parallel_tag<_IsVector>, __serial_tag<_IsVector>>::type;
+using __tag_type =
+    typename std::conditional<__internal::__are_random_access_iterators<_IteratorTypes...>::value,
+                              __parallel_tag<_IsVector>,
+                              __serial_tag<_IsVector>>::type;
 
 template <class... _IteratorTypes>
 __serial_tag</*_IsVector = */ std::false_type>
-__select_backend(__pstl::execution::sequenced_policy, _IteratorTypes&&...)
-{
-    return {};
+__select_backend(__pstl::execution::sequenced_policy, _IteratorTypes&&...) {
 }
 
 template <class... _IteratorTypes>
 __serial_tag<__internal::__are_random_access_iterators<_IteratorTypes...>>
-__select_backend(__pstl::execution::unsequenced_policy, _IteratorTypes&&...)
-{
-    return {};
+__select_backend(__pstl::execution::unsequenced_policy, _IteratorTypes&&...) {
 }
 
 template <class... _IteratorTypes>
 __tag_type</*_IsVector = */ std::false_type, _IteratorTypes...>
-__select_backend(__pstl::execution::parallel_policy, _IteratorTypes&&...)
-{
-    return {};
+__select_backend(__pstl::execution::parallel_policy, _IteratorTypes&&...) {
 }
 
 template <class... _IteratorTypes>
 __tag_type<__internal::__are_random_access_iterators<_IteratorTypes...>, _IteratorTypes...>
-__select_backend(__pstl::execution::parallel_unsequenced_policy, _IteratorTypes&&...)
-{
-    return {};
+__select_backend(__pstl::execution::parallel_unsequenced_policy, _IteratorTypes&&...) {
 }
 
 } // namespace __internal
 } // namespace __pstl
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_EXECUTION_IMPL_H */

libcxx/include/pstl/internal/glue_algorithm_defs.h

 #include <functional>
 #include <iterator>
 
 #include "execution_defs.h"
 #include "pstl_config.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace std
-{
+namespace std {
 
 // [alg.any_of]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
 any_of(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred);
 
 // [alg.all_of]

 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value);
 
 // [alg.find.end]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_end(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-         _ForwardIterator2 __s_last, _BinaryPredicate __pred);
+find_end(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first,
+         _ForwardIterator1 __last,
+         _ForwardIterator2 __s_first,
+         _ForwardIterator2 __s_last,
+         _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_end(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
+find_end(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first,
+         _ForwardIterator1 __last,
+         _ForwardIterator2 __s_first,
          _ForwardIterator2 __s_last);
 
 // [alg.find_first_of]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_first_of(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-              _ForwardIterator2 __s_first, _ForwardIterator2 __s_last, _BinaryPredicate __pred);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1> find_first_of(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __s_first,
+    _ForwardIterator2 __s_last,
+    _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_first_of(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-              _ForwardIterator2 __s_first, _ForwardIterator2 __s_last);
+find_first_of(_ExecutionPolicy&& __exec,
+              _ForwardIterator1 __first,
+              _ForwardIterator1 __last,
+              _ForwardIterator2 __s_first,
+              _ForwardIterator2 __s_last);
 
 // [alg.adjacent_find]
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 adjacent_find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>

 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy,
                                                  typename iterator_traits<_ForwardIterator>::difference_type>
 count_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred);
 
 // [alg.search]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-       _ForwardIterator2 __s_last, _BinaryPredicate __pred);
+search(_ExecutionPolicy&& __exec,
+       _ForwardIterator1 __first,
+       _ForwardIterator1 __last,
+       _ForwardIterator2 __s_first,
+       _ForwardIterator2 __s_last,
+       _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
+search(_ExecutionPolicy&& __exec,
+       _ForwardIterator1 __first,
+       _ForwardIterator1 __last,
+       _ForwardIterator2 __s_first,
        _ForwardIterator2 __s_last);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-search_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Size __count,
-         const _Tp& __value, _BinaryPredicate __pred);
+search_n(_ExecutionPolicy&& __exec,
+         _ForwardIterator __first,
+         _ForwardIterator __last,
+         _Size __count,
+         const _Tp& __value,
+         _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-search_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Size __count,
-         const _Tp& __value);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> search_n(
+    _ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Size __count, const _Tp& __value);
 
 // [alg.copy]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
 copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _Size, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
 copy_n(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _Size __n, _ForwardIterator2 __result);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-copy_if(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 result,
+copy_if(_ExecutionPolicy&& __exec,
+        _ForwardIterator1 __first,
+        _ForwardIterator1 __last,
+        _ForwardIterator2 result,
         _Predicate __pred);
 
 // [alg.swap]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-swap_ranges(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-            _ForwardIterator2 __first2);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> swap_ranges(
+    _ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2);
 
 // [alg.transform]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryOperation>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
+transform(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first,
+          _ForwardIterator1 __last,
+          _ForwardIterator2 __result,
           _UnaryOperation __op);
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _BinaryOperation>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-          _ForwardIterator __result, _BinaryOperation __op);
+transform(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first1,
+          _ForwardIterator1 __last1,
+          _ForwardIterator2 __first2,
+          _ForwardIterator __result,
+          _BinaryOperation __op);
 
 // [alg.replace]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-replace_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred,
+replace_if(_ExecutionPolicy&& __exec,
+           _ForwardIterator __first,
+           _ForwardIterator __last,
+           _UnaryPredicate __pred,
            const _Tp& __new_value);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-replace(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __old_value,
+replace(_ExecutionPolicy&& __exec,
+        _ForwardIterator __first,
+        _ForwardIterator __last,
+        const _Tp& __old_value,
         const _Tp& __new_value);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryPredicate, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-replace_copy_if(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                _ForwardIterator2 __result, _UnaryPredicate __pred, const _Tp& __new_value);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> replace_copy_if(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _UnaryPredicate __pred,
+    const _Tp& __new_value);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-replace_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
-             const _Tp& __old_value, const _Tp& __new_value);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> replace_copy(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    const _Tp& __old_value,
+    const _Tp& __new_value);
 
 // [alg.fill]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
 fill(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 fill_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __count, const _Tp& __value);
 
 // [alg.generate]
 template <class _ExecutionPolicy, class _ForwardIterator, class _Generator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
 generate(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Generator __g);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Generator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 generate_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size count, _Generator __g);
 
 // [alg.remove]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-remove_copy_if(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _Predicate __pred);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> remove_copy_if(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Predicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-remove_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
+remove_copy(_ExecutionPolicy&& __exec,
+            _ForwardIterator1 __first,
+            _ForwardIterator1 __last,
+            _ForwardIterator2 __result,
             const _Tp& __value);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 remove_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 remove(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value);
 
 // [alg.unique]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 unique(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 unique(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-unique_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
+unique_copy(_ExecutionPolicy&& __exec,
+            _ForwardIterator1 __first,
+            _ForwardIterator1 __last,
+            _ForwardIterator2 __result,
             _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
 unique_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result);
 
 // [alg.reverse]
 
 template <class _ExecutionPolicy, class _BidirectionalIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
 reverse(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last);
 
 template <class _ExecutionPolicy, class _BidirectionalIterator, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-reverse_copy(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last,
+reverse_copy(_ExecutionPolicy&& __exec,
+             _BidirectionalIterator __first,
+             _BidirectionalIterator __last,
              _ForwardIterator __d_first);
 
 // [alg.rotate]
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 rotate(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-rotate_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __middle, _ForwardIterator1 __last,
+rotate_copy(_ExecutionPolicy&& __exec,
+            _ForwardIterator1 __first,
+            _ForwardIterator1 __middle,
+            _ForwardIterator1 __last,
             _ForwardIterator2 __result);
 
 // [alg.partitions]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
 is_partitioned(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 partition(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _BidirectionalIterator, class _UnaryPredicate>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _BidirectionalIterator>
-stable_partition(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last,
-                 _UnaryPredicate __pred);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _BidirectionalIterator> stable_partition(
+    _ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last, _UnaryPredicate __pred);
 
-template <class _ExecutionPolicy, class _ForwardIterator, class _ForwardIterator1, class _ForwardIterator2,
+template <class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
           class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-partition_copy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last,
-               _ForwardIterator1 __out_true, _ForwardIterator2 __out_false, _UnaryPredicate __pred);
+partition_copy(_ExecutionPolicy&& __exec,
+               _ForwardIterator __first,
+               _ForwardIterator __last,
+               _ForwardIterator1 __out_true,
+               _ForwardIterator2 __out_false,
+               _UnaryPredicate __pred);
 
 // [alg.sort]
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
 sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp);
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>

 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
 stable_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
 
 // [mismatch]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-         _ForwardIterator2 __last2, _BinaryPredicate __pred);
+mismatch(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
+         _ForwardIterator2 __last2,
+         _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
+mismatch(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
          _BinaryPredicate __pred);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
+mismatch(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
          _ForwardIterator2 __last2);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
 mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2);
 
 // [alg.equal]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
+equal(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
       _BinaryPredicate __p);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
 equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _ForwardIterator2 __last2, _BinaryPredicate __p);
+equal(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _ForwardIterator2 __last2,
+      _BinaryPredicate __p);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
+equal(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
       _ForwardIterator2 __last2);
 
 // [alg.move]
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
 move(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __d_first);
 
 // [partial.sort]
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-partial_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __middle,
-             _RandomAccessIterator __last, _Compare __comp);
+partial_sort(_ExecutionPolicy&& __exec,
+             _RandomAccessIterator __first,
+             _RandomAccessIterator __middle,
+             _RandomAccessIterator __last,
+             _Compare __comp);
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-partial_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __middle,
+partial_sort(_ExecutionPolicy&& __exec,
+             _RandomAccessIterator __first,
+             _RandomAccessIterator __middle,
              _RandomAccessIterator __last);
 
 // [partial.sort.copy]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _RandomAccessIterator, class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>
-partial_sort_copy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last,
-                  _RandomAccessIterator __d_first, _RandomAccessIterator __d_last, _Compare __comp);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator> partial_sort_copy(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _RandomAccessIterator __d_first,
+    _RandomAccessIterator __d_last,
+    _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _RandomAccessIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>
-partial_sort_copy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last,
-                  _RandomAccessIterator __d_first, _RandomAccessIterator __d_last);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator> partial_sort_copy(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _RandomAccessIterator __d_first,
+    _RandomAccessIterator __d_last);
 
 // [is.sorted]
 template <class _ExecutionPolicy, class _ForwardIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 is_sorted_until(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 is_sorted_until(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
 is_sorted(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
 is_sorted(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last);
 
 // [alg.nth.element]
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-nth_element(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __nth,
-            _RandomAccessIterator __last, _Compare __comp);
+nth_element(_ExecutionPolicy&& __exec,
+            _RandomAccessIterator __first,
+            _RandomAccessIterator __nth,
+            _RandomAccessIterator __last,
+            _Compare __comp);
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-nth_element(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __nth,
+nth_element(_ExecutionPolicy&& __exec,
+            _RandomAccessIterator __first,
+            _RandomAccessIterator __nth,
             _RandomAccessIterator __last);
 
 // [alg.merge]
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-merge(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _ForwardIterator2 __last2, _ForwardIterator __d_first, _Compare __comp);
+merge(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _ForwardIterator2 __last2,
+      _ForwardIterator __d_first,
+      _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-merge(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _ForwardIterator2 __last2, _ForwardIterator __d_first);
+merge(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _ForwardIterator2 __last2,
+      _ForwardIterator __d_first);
 
 template <class _ExecutionPolicy, class _BidirectionalIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-inplace_merge(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __middle,
-              _BidirectionalIterator __last, _Compare __comp);
+inplace_merge(_ExecutionPolicy&& __exec,
+              _BidirectionalIterator __first,
+              _BidirectionalIterator __middle,
+              _BidirectionalIterator __last,
+              _Compare __comp);
 
 template <class _ExecutionPolicy, class _BidirectionalIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-inplace_merge(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __middle,
+inplace_merge(_ExecutionPolicy&& __exec,
+              _BidirectionalIterator __first,
+              _BidirectionalIterator __middle,
               _BidirectionalIterator __last);
 
 // [includes]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-includes(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-         _ForwardIterator2 __last2, _Compare __comp);
+includes(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
+         _ForwardIterator2 __last2,
+         _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-includes(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
+includes(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
          _ForwardIterator2 __last2);
 
 // [set.union]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_union(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-          _ForwardIterator2 __last2, _ForwardIterator __result, _Compare __comp);
+set_union(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first1,
+          _ForwardIterator1 __last1,
+          _ForwardIterator2 __first2,
+          _ForwardIterator2 __last2,
+          _ForwardIterator __result,
+          _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_union(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-          _ForwardIterator2 __last2, _ForwardIterator __result);
+set_union(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first1,
+          _ForwardIterator1 __last1,
+          _ForwardIterator2 __first2,
+          _ForwardIterator2 __last2,
+          _ForwardIterator __result);
 
 // [set.intersection]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_intersection(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result, _Compare __comp);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_intersection(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result,
+    _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_intersection(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_intersection(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result);
 
 // [set.difference]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-               _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result, _Compare __comp);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result,
+    _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-               _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result);
 
 // [set.symmetric.difference]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_symmetric_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                         _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator result,
-                         _Compare __comp);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_symmetric_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator result,
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_symmetric_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                         _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_symmetric_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result);
 
 // [is.heap]
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>
 is_heap_until(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp);
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>

 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator, _ForwardIterator>>
 minmax_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last);
 
 // [alg.lex.comparison]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-lexicographical_compare(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                        _ForwardIterator2 __first2, _ForwardIterator2 __last2, _Compare __comp);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool> lexicographical_compare(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _Compare __comp);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-lexicographical_compare(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                        _ForwardIterator2 __first2, _ForwardIterator2 __last2);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool> lexicographical_compare(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2);
 
 } // namespace std
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_GLUE_ALGORITHM_DEFS_H */

libcxx/include/pstl/internal/glue_algorithm_impl.h

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _PSTL_GLUE_ALGORITHM_IMPL_H
 #define _PSTL_GLUE_ALGORITHM_IMPL_H
 
 #include <functional>
 
 #include "pstl_config.h"
 
-#include "execution_defs.h"
-#include "utils.h"
 #include "algorithm_fwd.h"
+#include "execution_defs.h"
 #include "numeric_fwd.h" /* count and count_if use __pattern_transform_reduce */
+#include "utils.h"
 
 #include "execution_impl.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace std
-{
+namespace std {
 
 // [alg.any_of]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-any_of(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+any_of(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) {
 
-    return __pstl::__internal::__pattern_any_of(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                __pred);
+  return __pstl::__internal::__pattern_any_of(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
 // [alg.all_of]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Pred>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-all_of(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Pred __pred)
-{
-    return !std::any_of(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::not_fn(__pred));
+all_of(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Pred __pred) {
 }
 
 // [alg.none_of]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-none_of(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
-{
-    return !std::any_of(std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
+none_of(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) {
 }
 
 // [alg.foreach]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Function>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-for_each(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Function __f)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+for_each(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Function __f) {
 
-    __pstl::__internal::__pattern_walk1(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __f);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Function>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-for_each_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n, _Function __f)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+for_each_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n, _Function __f) {
 
-    return __pstl::__internal::__pattern_walk1_n(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n,
-                                                 __f);
+  return __pstl::__internal::__pattern_walk1_n(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, __f);
 }
 
 // [alg.find]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-find_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+find_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) {
 
-    return __pstl::__internal::__pattern_find_if(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                 __last, __pred);
+  return __pstl::__internal::__pattern_find_if(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-find_if_not(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
-{
-    return std::find_if(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::not_fn(__pred));
+find_if_not(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
-{
-    return std::find_if(std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                        __pstl::__internal::__equal_value<_Tp>(__value));
+find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
+  return std::find_if(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __pstl::__internal::__equal_value<_Tp>(__value));
 }
 
 // [alg.find.end]
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_end(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-         _ForwardIterator2 __s_last, _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __s_first);
+find_end(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first,
+         _ForwardIterator1 __last,
+         _ForwardIterator2 __s_first,
+         _ForwardIterator2 __s_last,
+         _BinaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_find_end(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                  __last, __s_first, __s_last, __pred);
+  return __pstl::__internal::__pattern_find_end(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_end(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-         _ForwardIterator2 __s_last)
-{
-    return std::find_end(std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last,
-                         std::equal_to<>());
+find_end(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first,
+         _ForwardIterator1 __last,
+         _ForwardIterator2 __s_first,
+         _ForwardIterator2 __s_last) {
+  return std::find_end(std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last, std::equal_to<>());
 }
 
 // [alg.find_first_of]
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_first_of(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-              _ForwardIterator2 __s_first, _ForwardIterator2 __s_last, _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __s_first);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1> find_first_of(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __s_first,
+    _ForwardIterator2 __s_last,
+    _BinaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_find_first_of(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                       __last, __s_first, __s_last, __pred);
+  return __pstl::__internal::__pattern_find_first_of(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-find_first_of(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-              _ForwardIterator2 __s_first, _ForwardIterator2 __s_last)
-{
-    return std::find_first_of(std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last,
-                              std::equal_to<>());
+find_first_of(_ExecutionPolicy&& __exec,
+              _ForwardIterator1 __first,
+              _ForwardIterator1 __last,
+              _ForwardIterator2 __s_first,
+              _ForwardIterator2 __s_last) {
+  return std::find_first_of(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last, std::equal_to<>());
 }
 
 // [alg.adjacent_find]
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-adjacent_find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+adjacent_find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    return __pstl::__internal::__pattern_adjacent_find(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                       __last, std::equal_to<_ValueType>(), /*first_semantic*/ false);
+  return __pstl::__internal::__pattern_adjacent_find(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      std::equal_to<_ValueType>(),
+      /*first_semantic*/ false);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-adjacent_find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_adjacent_find(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                       __last, __pred, /*first_semantic*/ false);
+adjacent_find(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) {
+  return __pstl::__internal::__pattern_adjacent_find(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred, /*first_semantic*/ false);
 }
 
 // [alg.count]
 
 // Implementation note: count and count_if call the pattern directly instead of calling std::transform_reduce
 // so that we do not have to include <numeric>.
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy,
                                                  typename iterator_traits<_ForwardIterator>::difference_type>
-count(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+count(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
 
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    return __pstl::__internal::__pattern_count(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                               [&__value](const _ValueType& __x) { return __value == __x; });
+  return __pstl::__internal::__pattern_count(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, [&__value](const _ValueType& __x) {
+        return __value == __x;
+      });
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy,
                                                  typename iterator_traits<_ForwardIterator>::difference_type>
-count_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_count(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                               __pred);
+count_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) {
+  return __pstl::__internal::__pattern_count(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
 // [alg.search]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-       _ForwardIterator2 __s_last, _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __s_first);
+search(_ExecutionPolicy&& __exec,
+       _ForwardIterator1 __first,
+       _ForwardIterator1 __last,
+       _ForwardIterator2 __s_first,
+       _ForwardIterator2 __s_last,
+       _BinaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_search(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                __s_first, __s_last, __pred);
+  return __pstl::__internal::__pattern_search(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator1>
-search(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __s_first,
-       _ForwardIterator2 __s_last)
-{
-    return std::search(std::forward<_ExecutionPolicy>(__exec), __first, __last, __s_first, __s_last, std::equal_to<>());
+search(_ExecutionPolicy&& __exec,
+       _ForwardIterator1 __first,
+       _ForwardIterator1 __last,
+       _ForwardIterator2 __s_first,
+       _ForwardIterator2 __s_last) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-search_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Size __count,
-         const _Tp& __value, _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+search_n(_ExecutionPolicy&& __exec,
+         _ForwardIterator __first,
+         _ForwardIterator __last,
+         _Size __count,
+         const _Tp& __value,
+         _BinaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_search_n(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                  __last, __count, __value, __pred);
+  return __pstl::__internal::__pattern_search_n(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __count, __value, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-search_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Size __count,
-         const _Tp& __value)
-{
-    return std::search_n(std::forward<_ExecutionPolicy>(__exec), __first, __last, __count, __value,
-                         std::equal_to<typename iterator_traits<_ForwardIterator>::value_type>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> search_n(
+    _ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Size __count, const _Tp& __value) {
+  return std::search_n(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __count,
+      __value,
 }
 
 // [alg.copy]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result) {
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__pattern_walk2_brick(
-        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-        [](_ForwardIterator1 __begin, _ForwardIterator1 __end, _ForwardIterator2 __res)
-        { return __pstl::__internal::__brick_copy(__begin, __end, __res, __is_vector{}); });
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      [](_ForwardIterator1 __begin, _ForwardIterator1 __end, _ForwardIterator2 __res) {
+        return __pstl::__internal::__brick_copy(__begin, __end, __res, __is_vector{});
+      });
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _Size, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-copy_n(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _Size __n, _ForwardIterator2 __result)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+copy_n(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _Size __n, _ForwardIterator2 __result) {
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__pattern_walk2_brick_n(
-        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, __result,
-        [](_ForwardIterator1 __begin, _Size __sz, _ForwardIterator2 __res)
-        { return __pstl::__internal::__brick_copy_n(__begin, __sz, __res, __is_vector{}); });
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __n,
+      __result,
+      [](_ForwardIterator1 __begin, _Size __sz, _ForwardIterator2 __res) {
+        return __pstl::__internal::__brick_copy_n(__begin, __sz, __res, __is_vector{});
+      });
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-copy_if(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
-        _Predicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+copy_if(_ExecutionPolicy&& __exec,
+        _ForwardIterator1 __first,
+        _ForwardIterator1 __last,
+        _ForwardIterator2 __result,
+        _Predicate __pred) {
 
-    return __pstl::__internal::__pattern_copy_if(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                 __last, __result, __pred);
+  return __pstl::__internal::__pattern_copy_if(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __pred);
 }
 
 // [alg.swap]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-swap_ranges(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-            _ForwardIterator2 __first2)
-{
-    typedef typename iterator_traits<_ForwardIterator1>::reference _ReferenceType1;
-    typedef typename iterator_traits<_ForwardIterator2>::reference _ReferenceType2;
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> swap_ranges(
+    _ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
 
-    return __pstl::__internal::__pattern_walk2(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                               __last1, __first2,
-                                               [](_ReferenceType1 __x, _ReferenceType2 __y)
-                                               {
-                                                   using std::swap;
-                                                   swap(__x, __y);
-                                               });
+  return __pstl::__internal::__pattern_walk2(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      [](_ReferenceType1 __x, _ReferenceType2 __y) {
 }
 
 // [alg.transform]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryOperation>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
-          _UnaryOperation __op)
-{
-    typedef typename iterator_traits<_ForwardIterator1>::reference _InputType;
-    typedef typename iterator_traits<_ForwardIterator2>::reference _OutputType;
+transform(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first,
+          _ForwardIterator1 __last,
+          _ForwardIterator2 __result,
+          _UnaryOperation __op) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
 
-    return __pstl::__internal::__pattern_walk2(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                               __result,
-                                               [__op](_InputType __x, _OutputType __y) mutable { __y = __op(__x); });
+  return __pstl::__internal::__pattern_walk2(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
 }
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _BinaryOperation>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-          _ForwardIterator __result, _BinaryOperation __op)
-{
-    typedef typename iterator_traits<_ForwardIterator1>::reference _Input1Type;
-    typedef typename iterator_traits<_ForwardIterator2>::reference _Input2Type;
-    typedef typename iterator_traits<_ForwardIterator>::reference _OutputType;
+transform(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first1,
+          _ForwardIterator1 __last1,
+          _ForwardIterator2 __first2,
+          _ForwardIterator __result,
+          _BinaryOperation __op) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2, __result);
 
-    return __pstl::__internal::__pattern_walk3(
-        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __result,
-        [__op](_Input1Type x, _Input2Type y, _OutputType z) mutable { z = __op(x, y); });
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      __result,
 }
 
 // [alg.replace]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-replace_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred,
-           const _Tp& __new_value)
-{
-    typedef typename iterator_traits<_ForwardIterator>::reference _ElementType;
+replace_if(_ExecutionPolicy&& __exec,
+           _ForwardIterator __first,
+           _ForwardIterator __last,
+           _UnaryPredicate __pred,
+           const _Tp& __new_value) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    __pstl::__internal::__pattern_walk1(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                        [&__pred, &__new_value](_ElementType __elem)
-                                        {
-                                            if (__pred(__elem))
-                                            {
-                                                __elem = __new_value;
-                                            }
-                                        });
+  __pstl::__internal::__pattern_walk1(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      [&__pred, &__new_value](_ElementType __elem) {
+        if (__pred(__elem)) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-replace(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __old_value,
-        const _Tp& __new_value)
-{
-    std::replace_if(std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                    __pstl::__internal::__equal_value<_Tp>(__old_value), __new_value);
+replace(_ExecutionPolicy&& __exec,
+        _ForwardIterator __first,
+        _ForwardIterator __last,
+        const _Tp& __old_value,
+        const _Tp& __new_value) {
+  std::replace_if(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __pstl::__internal::__equal_value<_Tp>(__old_value),
+      __new_value);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryPredicate, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-replace_copy_if(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                _ForwardIterator2 __result, _UnaryPredicate __pred, const _Tp& __new_value)
-{
-    typedef typename iterator_traits<_ForwardIterator1>::reference _InputType;
-    typedef typename iterator_traits<_ForwardIterator2>::reference _OutputType;
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> replace_copy_if(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _UnaryPredicate __pred,
+    const _Tp& __new_value) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
 
-    return __pstl::__internal::__pattern_walk2(
-        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-        [__pred, &__new_value](_InputType __x, _OutputType __y) mutable { __y = __pred(__x) ? __new_value : __x; });
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-replace_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
-             const _Tp& __old_value, const _Tp& __new_value)
-{
-    return std::replace_copy_if(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-                                __pstl::__internal::__equal_value<_Tp>(__old_value), __new_value);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> replace_copy(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    const _Tp& __old_value,
+    const _Tp& __new_value) {
+  return std::replace_copy_if(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      __pstl::__internal::__equal_value<_Tp>(__old_value),
+      __new_value);
 }
 
 // [alg.fill]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-fill(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+fill(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
 
-    __pstl::__internal::__pattern_fill(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                       __value);
+  __pstl::__internal::__pattern_fill(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __value);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-fill_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __count, const _Tp& __value)
-{
-    if (__count <= 0)
-        return __first;
+fill_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __count, const _Tp& __value) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    return __pstl::__internal::__pattern_fill_n(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                __count, __value);
+  return __pstl::__internal::__pattern_fill_n(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __count, __value);
 }
 
 // [alg.generate]
 template <class _ExecutionPolicy, class _ForwardIterator, class _Generator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-generate(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Generator __g)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+generate(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Generator __g) {
 
-    __pstl::__internal::__pattern_generate(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                           __g);
+  __pstl::__internal::__pattern_generate(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __g);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Generator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-generate_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __count, _Generator __g)
-{
-    if (__count <= 0)
-        return __first;
+generate_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __count, _Generator __g) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    return __pstl::__internal::__pattern_generate_n(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                    __count, __g);
+  return __pstl::__internal::__pattern_generate_n(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __count, __g);
 }
 
 // [alg.remove]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Predicate>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-remove_copy_if(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _Predicate __pred)
-{
-    return std::copy_if(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, std::not_fn(__pred));
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> remove_copy_if(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Predicate __pred) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-remove_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
-            const _Tp& __value)
-{
-    return std::copy_if(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-                        __pstl::__internal::__not_equal_value<_Tp>(__value));
+remove_copy(_ExecutionPolicy&& __exec,
+            _ForwardIterator1 __first,
+            _ForwardIterator1 __last,
+            _ForwardIterator2 __result,
+            const _Tp& __value) {
+  return std::copy_if(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-remove_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+remove_if(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_remove_if(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                   __last, __pred);
+  return __pstl::__internal::__pattern_remove_if(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-remove(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
-{
-    return std::remove_if(std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                          __pstl::__internal::__equal_value<_Tp>(__value));
+remove(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
+  return std::remove_if(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __pstl::__internal::__equal_value<_Tp>(__value));
 }
 
 // [alg.unique]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-unique(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+unique(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_unique(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                __pred);
+  return __pstl::__internal::__pattern_unique(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-unique(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    return std::unique(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::equal_to<>());
+unique(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-unique_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
-            _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+unique_copy(_ExecutionPolicy&& __exec,
+            _ForwardIterator1 __first,
+            _ForwardIterator1 __last,
+            _ForwardIterator2 __result,
+            _BinaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_unique_copy(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                     __last, __result, __pred);
+  return __pstl::__internal::__pattern_unique_copy(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-unique_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result)
-{
-    return std::unique_copy(__exec, __first, __last, __result, std::equal_to<>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> unique_copy(
+    _ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result) {
 }
 
 // [alg.reverse]
 
 template <class _ExecutionPolicy, class _BidirectionalIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-reverse(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+reverse(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last) {
 
-    __pstl::__internal::__pattern_reverse(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last);
 }
 
 template <class _ExecutionPolicy, class _BidirectionalIterator, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-reverse_copy(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last,
-             _ForwardIterator __d_first)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __d_first);
+reverse_copy(_ExecutionPolicy&& __exec,
+             _BidirectionalIterator __first,
+             _BidirectionalIterator __last,
+             _ForwardIterator __d_first) {
 
-    return __pstl::__internal::__pattern_reverse_copy(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                      __last, __d_first);
+  return __pstl::__internal::__pattern_reverse_copy(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first);
 }
 
 // [alg.rotate]
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-rotate(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+rotate(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last) {
 
-    return __pstl::__internal::__pattern_rotate(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                __middle, __last);
+  return __pstl::__internal::__pattern_rotate(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __middle, __last);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-rotate_copy(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __middle, _ForwardIterator1 __last,
-            _ForwardIterator2 __result)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+rotate_copy(_ExecutionPolicy&& __exec,
+            _ForwardIterator1 __first,
+            _ForwardIterator1 __middle,
+            _ForwardIterator1 __last,
+            _ForwardIterator2 __result) {
 
-    return __pstl::__internal::__pattern_rotate_copy(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                     __middle, __last, __result);
+  return __pstl::__internal::__pattern_rotate_copy(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __middle, __last, __result);
 }
 
 // [alg.partitions]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-is_partitioned(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_is_partitioned(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                        __last, __pred);
+is_partitioned(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred) {
+  return __pstl::__internal::__pattern_is_partitioned(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-partition(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+partition(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _UnaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_partition(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                   __last, __pred);
+  return __pstl::__internal::__pattern_partition(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
 template <class _ExecutionPolicy, class _BidirectionalIterator, class _UnaryPredicate>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _BidirectionalIterator>
-stable_partition(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last,
-                 _UnaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_stable_partition(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                          __first, __last, __pred);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _BidirectionalIterator> stable_partition(
+    _ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __last, _UnaryPredicate __pred) {
+  return __pstl::__internal::__pattern_stable_partition(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __pred);
 }
 
-template <class _ExecutionPolicy, class _ForwardIterator, class _ForwardIterator1, class _ForwardIterator2,
+template <class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
           class _UnaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-partition_copy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last,
-               _ForwardIterator1 __out_true, _ForwardIterator2 __out_false, _UnaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __out_true, __out_false);
+partition_copy(_ExecutionPolicy&& __exec,
+               _ForwardIterator __first,
+               _ForwardIterator __last,
+               _ForwardIterator1 __out_true,
+               _ForwardIterator2 __out_false,
+               _UnaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_partition_copy(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                        __last, __out_true, __out_false, __pred);
+  return __pstl::__internal::__pattern_partition_copy(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __out_true, __out_false, __pred);
 }
 
 // [alg.sort]
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) {
 
-    typedef typename iterator_traits<_RandomAccessIterator>::value_type _InputType;
-    return __pstl::__internal::__pattern_sort(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                              __comp, typename std::is_move_constructible<_InputType>::type());
+  return __pstl::__internal::__pattern_sort(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __comp,
+      typename std::is_move_constructible<_InputType>::type());
 }
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last)
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::value_type _InputType;
-    std::sort(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::less<_InputType>());
+sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last) {
 }
 
 // [stable.sort]
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-stable_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+stable_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) {
 
-    return __pstl::__internal::__pattern_stable_sort(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                     __last, __comp);
+  return __pstl::__internal::__pattern_stable_sort(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp);
 }
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-stable_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last)
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::value_type _InputType;
-    std::stable_sort(__exec, __first, __last, std::less<_InputType>());
+stable_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last) {
 }
 
 // [mismatch]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-         _ForwardIterator2 __last2, _BinaryPredicate __pred)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
+mismatch(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
+         _ForwardIterator2 __last2,
+         _BinaryPredicate __pred) {
 
-    return __pstl::__internal::__pattern_mismatch(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                                  __last1, __first2, __last2, __pred);
+  return __pstl::__internal::__pattern_mismatch(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-         _BinaryPredicate __pred)
-{
-    return std::mismatch(__exec, __first1, __last1, __first2, std::next(__first2, std::distance(__first1, __last1)),
-                         __pred);
+mismatch(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
+         _BinaryPredicate __pred) {
+  return std::mismatch(
+      __exec, __first1, __last1, __first2, std::next(__first2, std::distance(__first1, __last1)), __pred);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-         _ForwardIterator2 __last2)
-{
-    return std::mismatch(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2,
-                         std::equal_to<>());
+mismatch(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
+         _ForwardIterator2 __last2) {
+  return std::mismatch(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, std::equal_to<>());
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator1, _ForwardIterator2>>
-mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2)
-{
-    //TODO: to get rid of "distance"
-    return std::mismatch(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2,
-                         std::next(__first2, std::distance(__first1, __last1)));
+mismatch(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) {
+  // TODO: to get rid of "distance"
+  return std::mismatch(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
 }
 
 // [alg.equal]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _BinaryPredicate __p)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
+equal(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _BinaryPredicate __p) {
 
-    return __pstl::__internal::__pattern_equal(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                               __last1, __first2, __p);
+  return __pstl::__internal::__pattern_equal(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __p);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2)
-{
-    return std::equal(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, std::equal_to<>());
+equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _ForwardIterator2 __last2, _BinaryPredicate __p)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
+equal(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _ForwardIterator2 __last2,
+      _BinaryPredicate __p) {
 
-    return __pstl::__internal::__pattern_equal(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                               __last1, __first2, __last2, __p);
+  return __pstl::__internal::__pattern_equal(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __p);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-equal(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _ForwardIterator2 __last2)
-{
-    return equal(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, std::equal_to<>());
+equal(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _ForwardIterator2 __last2) {
 }
 
 // [alg.move]
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-move(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __d_first)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __d_first);
+move(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __d_first) {
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__pattern_walk2_brick(
-        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first,
-        [](_ForwardIterator1 __begin, _ForwardIterator1 __end, _ForwardIterator2 __res)
-        { return __pstl::__internal::__brick_move(__begin, __end, __res, __is_vector{}); });
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __d_first,
+      [](_ForwardIterator1 __begin, _ForwardIterator1 __end, _ForwardIterator2 __res) {
+        return __pstl::__internal::__brick_move(__begin, __end, __res, __is_vector{});
+      });
 }
 
 // [partial.sort]
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-partial_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __middle,
-             _RandomAccessIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+partial_sort(_ExecutionPolicy&& __exec,
+             _RandomAccessIterator __first,
+             _RandomAccessIterator __middle,
+             _RandomAccessIterator __last,
+             _Compare __comp) {
 
-    __pstl::__internal::__pattern_partial_sort(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                               __middle, __last, __comp);
+  __pstl::__internal::__pattern_partial_sort(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __middle, __last, __comp);
 }
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-partial_sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __middle,
-             _RandomAccessIterator __last)
-{
-    typedef typename iterator_traits<_RandomAccessIterator>::value_type _InputType;
-    std::partial_sort(__exec, __first, __middle, __last, std::less<_InputType>());
+partial_sort(_ExecutionPolicy&& __exec,
+             _RandomAccessIterator __first,
+             _RandomAccessIterator __middle,
+             _RandomAccessIterator __last) {
 }
 
 // [partial.sort.copy]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _RandomAccessIterator, class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>
-partial_sort_copy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last,
-                  _RandomAccessIterator __d_first, _RandomAccessIterator __d_last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __d_first);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator> partial_sort_copy(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _RandomAccessIterator __d_first,
+    _RandomAccessIterator __d_last,
+    _Compare __comp) {
 
-    return __pstl::__internal::__pattern_partial_sort_copy(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                           __first, __last, __d_first, __d_last, __comp);
+  return __pstl::__internal::__pattern_partial_sort_copy(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first, __d_last, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _RandomAccessIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>
-partial_sort_copy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last,
-                  _RandomAccessIterator __d_first, _RandomAccessIterator __d_last)
-{
-    return std::partial_sort_copy(std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first, __d_last,
-                                  std::less<>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator> partial_sort_copy(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _RandomAccessIterator __d_first,
+    _RandomAccessIterator __d_last) {
+  return std::partial_sort_copy(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first, __d_last, std::less<>());
 }
 
 // [is.sorted]
 template <class _ExecutionPolicy, class _ForwardIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-is_sorted_until(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    const _ForwardIterator __res =
-        __pstl::__internal::__pattern_adjacent_find(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                    __last, __pstl::__internal::__reorder_pred<_Compare>(__comp),
-                                                    /*first_semantic*/ false);
-    return __res == __last ? __last : std::next(__res);
+is_sorted_until(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp) {
+  auto __dispatch_tag          = __pstl::__internal::__select_backend(__exec, __first);
+  const _ForwardIterator __res = __pstl::__internal::__pattern_adjacent_find(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __pstl::__internal::__reorder_pred<_Compare>(__comp),
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-is_sorted_until(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename std::iterator_traits<_ForwardIterator>::value_type _InputType;
-    return is_sorted_until(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::less<_InputType>());
+is_sorted_until(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-is_sorted(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_adjacent_find(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                       __last, __pstl::__internal::__reorder_pred<_Compare>(__comp),
-                                                       /*or_semantic*/ true) == __last;
+is_sorted(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp) {
+  return __pstl::__internal::__pattern_adjacent_find(
+             __dispatch_tag,
+             std::forward<_ExecutionPolicy>(__exec),
+             __first,
+             __last,
+             __pstl::__internal::__reorder_pred<_Compare>(__comp),
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-is_sorted(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename std::iterator_traits<_ForwardIterator>::value_type _InputType;
-    return std::is_sorted(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::less<_InputType>());
+is_sorted(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 }
 
 // [alg.merge]
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-merge(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _ForwardIterator2 __last2, _ForwardIterator __d_first, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2, __d_first);
+merge(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _ForwardIterator2 __last2,
+      _ForwardIterator __d_first,
+      _Compare __comp) {
 
-    return __pstl::__internal::__pattern_merge(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                               __last1, __first2, __last2, __d_first, __comp);
+  return __pstl::__internal::__pattern_merge(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __d_first, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-merge(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-      _ForwardIterator2 __last2, _ForwardIterator __d_first)
-{
-    return std::merge(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __d_first,
-                      std::less<>());
+merge(_ExecutionPolicy&& __exec,
+      _ForwardIterator1 __first1,
+      _ForwardIterator1 __last1,
+      _ForwardIterator2 __first2,
+      _ForwardIterator2 __last2,
+      _ForwardIterator __d_first) {
+  return std::merge(
+      std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __d_first, std::less<>());
 }
 
 template <class _ExecutionPolicy, class _BidirectionalIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-inplace_merge(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __middle,
-              _BidirectionalIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+inplace_merge(_ExecutionPolicy&& __exec,
+              _BidirectionalIterator __first,
+              _BidirectionalIterator __middle,
+              _BidirectionalIterator __last,
+              _Compare __comp) {
 
-    __pstl::__internal::__pattern_inplace_merge(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                __middle, __last, __comp);
+  __pstl::__internal::__pattern_inplace_merge(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __middle, __last, __comp);
 }
 
 template <class _ExecutionPolicy, class _BidirectionalIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-inplace_merge(_ExecutionPolicy&& __exec, _BidirectionalIterator __first, _BidirectionalIterator __middle,
-              _BidirectionalIterator __last)
-{
-    typedef typename std::iterator_traits<_BidirectionalIterator>::value_type _InputType;
-    std::inplace_merge(__exec, __first, __middle, __last, std::less<_InputType>());
+inplace_merge(_ExecutionPolicy&& __exec,
+              _BidirectionalIterator __first,
+              _BidirectionalIterator __middle,
+              _BidirectionalIterator __last) {
 }
 
 // [includes]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-includes(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-         _ForwardIterator2 __last2, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
+includes(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
+         _ForwardIterator2 __last2,
+         _Compare __comp) {
 
-    return __pstl::__internal::__pattern_includes(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                                  __last1, __first2, __last2, __comp);
+  return __pstl::__internal::__pattern_includes(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-includes(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-         _ForwardIterator2 __last2)
-{
-    return std::includes(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, std::less<>());
+includes(_ExecutionPolicy&& __exec,
+         _ForwardIterator1 __first1,
+         _ForwardIterator1 __last1,
+         _ForwardIterator2 __first2,
+         _ForwardIterator2 __last2) {
 }
 
 // [set.union]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_union(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-          _ForwardIterator2 __last2, _ForwardIterator __result, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2, __result);
+set_union(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first1,
+          _ForwardIterator1 __last1,
+          _ForwardIterator2 __first2,
+          _ForwardIterator2 __last2,
+          _ForwardIterator __result,
+          _Compare __comp) {
 
-    return __pstl::__internal::__pattern_set_union(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1,
-                                                   __last1, __first2, __last2, __result, __comp);
+  return __pstl::__internal::__pattern_set_union(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_union(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
-          _ForwardIterator2 __last2, _ForwardIterator __result)
-{
-    return std::set_union(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result,
-                          std::less<>());
+set_union(_ExecutionPolicy&& __exec,
+          _ForwardIterator1 __first1,
+          _ForwardIterator1 __last1,
+          _ForwardIterator2 __first2,
+          _ForwardIterator2 __last2,
+          _ForwardIterator __result) {
+  return std::set_union(
+      std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, std::less<>());
 }
 
 // [set.intersection]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_intersection(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2, __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_intersection(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result,
+    _Compare __comp) {
 
-    return __pstl::__internal::__pattern_set_intersection(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                          __first1, __last1, __first2, __last2, __result, __comp);
+  return __pstl::__internal::__pattern_set_intersection(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_intersection(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result)
-{
-    return std::set_intersection(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result,
-                                 std::less<>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_intersection(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result) {
+  return std::set_intersection(
+      std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, std::less<>());
 }
 
 // [set.difference]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-               _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2, __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result,
+    _Compare __comp) {
 
-    return __pstl::__internal::__pattern_set_difference(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                        __first1, __last1, __first2, __last2, __result, __comp);
+  return __pstl::__internal::__pattern_set_difference(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-               _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result)
-{
-    return std::set_difference(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result,
-                               std::less<>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result) {
+  return std::set_difference(
+      std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, std::less<>());
 }
 
 // [set.symmetric.difference]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _ForwardIterator,
           class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_symmetric_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                         _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result,
-                         _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2, __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_symmetric_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result,
+    _Compare __comp) {
 
-    return __pstl::__internal::__pattern_set_symmetric_difference(
-        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-set_symmetric_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                         _ForwardIterator2 __first2, _ForwardIterator2 __last2, _ForwardIterator __result)
-{
-    return std::set_symmetric_difference(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2,
-                                         __result, std::less<>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> set_symmetric_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _ForwardIterator __result) {
+  return std::set_symmetric_difference(
+      std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __result, std::less<>());
 }
 
 // [is.heap]
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>
-is_heap_until(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+is_heap_until(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) {
 
-    return __pstl::__internal::__pattern_is_heap_until(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                       __last, __comp);
+  return __pstl::__internal::__pattern_is_heap_until(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp);
 }
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _RandomAccessIterator>
-is_heap_until(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last)
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::value_type _InputType;
-    return std::is_heap_until(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::less<_InputType>());
+is_heap_until(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last) {
 }
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-is_heap(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
-{
-    return std::is_heap_until(std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp) == __last;
+is_heap(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) {
 }
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-is_heap(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last)
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::value_type _InputType;
-    return std::is_heap(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::less<_InputType>());
+is_heap(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last) {
 }
 
 // [alg.min.max]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-min_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_min_element(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                     __last, __comp);
+min_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp) {
+  return __pstl::__internal::__pattern_min_element(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-min_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename std::iterator_traits<_ForwardIterator>::value_type _InputType;
-    return std::min_element(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::less<_InputType>());
+min_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-max_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
-{
-    return min_element(std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                       __pstl::__internal::__reorder_pred<_Compare>(__comp));
+max_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp) {
+  return min_element(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __pstl::__internal::__reorder_pred<_Compare>(__comp));
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-max_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename std::iterator_traits<_ForwardIterator>::value_type _InputType;
-    return std::min_element(std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                            __pstl::__internal::__reorder_pred<std::less<_InputType>>(std::less<_InputType>()));
+max_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
+  return std::min_element(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator, _ForwardIterator>>
-minmax_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_minmax_element(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                        __last, __comp);
+minmax_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Compare __comp) {
+  return __pstl::__internal::__pattern_minmax_element(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, std::pair<_ForwardIterator, _ForwardIterator>>
-minmax_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    return std::minmax_element(std::forward<_ExecutionPolicy>(__exec), __first, __last, std::less<_ValueType>());
+minmax_element(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 }
 
 // [alg.nth.element]
 
 template <class _ExecutionPolicy, class _RandomAccessIterator, class _Compare>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-nth_element(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __nth,
-            _RandomAccessIterator __last, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
+nth_element(_ExecutionPolicy&& __exec,
+            _RandomAccessIterator __first,
+            _RandomAccessIterator __nth,
+            _RandomAccessIterator __last,
+            _Compare __comp) {
 
-    __pstl::__internal::__pattern_nth_element(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __nth,
-                                              __last, __comp);
+  __pstl::__internal::__pattern_nth_element(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __nth, __last, __comp);
 }
 
 template <class _ExecutionPolicy, class _RandomAccessIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-nth_element(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __nth,
-            _RandomAccessIterator __last)
-{
-    typedef typename iterator_traits<_RandomAccessIterator>::value_type _InputType;
-    std::nth_element(std::forward<_ExecutionPolicy>(__exec), __first, __nth, __last, std::less<_InputType>());
+nth_element(_ExecutionPolicy&& __exec,
+            _RandomAccessIterator __first,
+            _RandomAccessIterator __nth,
+            _RandomAccessIterator __last) {
 }
 
 // [alg.lex.comparison]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Compare>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-lexicographical_compare(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                        _ForwardIterator2 __first2, _ForwardIterator2 __last2, _Compare __comp)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool> lexicographical_compare(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2,
+    _Compare __comp) {
 
-    return __pstl::__internal::__pattern_lexicographical_compare(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                                 __first1, __last1, __first2, __last2, __comp);
+  return __pstl::__internal::__pattern_lexicographical_compare(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, __comp);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool>
-lexicographical_compare(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                        _ForwardIterator2 __first2, _ForwardIterator2 __last2)
-{
-    return std::lexicographical_compare(std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2,
-                                        std::less<>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, bool> lexicographical_compare(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _ForwardIterator2 __last2) {
+  return std::lexicographical_compare(
+      std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __last2, std::less<>());
 }
 
 } // namespace std
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_GLUE_ALGORITHM_IMPL_H */

libcxx/include/pstl/internal/glue_execution_defs.h

 #ifndef _PSTL_GLUE_EXECUTION_DEFS_H
 #define _PSTL_GLUE_EXECUTION_DEFS_H
 
 #include <type_traits>
 
 #include "execution_defs.h"
 #include "pstl_config.h"
 
-namespace std
-{
+namespace std {
 // Type trait
 using __pstl::execution::is_execution_policy;
 #if defined(_PSTL_CPP14_VARIABLE_TEMPLATES_PRESENT)
-#    if defined(__INTEL_COMPILER)
+#  if defined(__INTEL_COMPILER)
 template <class T>
 constexpr bool is_execution_policy_v = is_execution_policy<T>::value;
-#    else
+#  else
 using __pstl::execution::is_execution_policy_v;
-#    endif
+#  endif
 #endif
 
-namespace execution
-{
+namespace execution {
 // Standard C++ policy classes
 using __pstl::execution::parallel_policy;
 using __pstl::execution::parallel_unsequenced_policy;
 using __pstl::execution::sequenced_policy;
 
 // Standard predefined policy instances
 using __pstl::execution::par;
 using __pstl::execution::par_unseq;

libcxx/include/pstl/internal/glue_memory_defs.h

 #ifndef _PSTL_GLUE_MEMORY_DEFS_H
 #define _PSTL_GLUE_MEMORY_DEFS_H
 
 #include "execution_defs.h"
 #include "pstl_config.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace std
-{
+namespace std {
 
 // [uninitialized.copy]
 
 template <class _ExecutionPolicy, class _InputIterator, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
 uninitialized_copy(_ExecutionPolicy&& __exec, _InputIterator __first, _InputIterator __last, _ForwardIterator __result);
 
 template <class _ExecutionPolicy, class _InputIterator, class _Size, class _ForwardIterator>

libcxx/include/pstl/internal/glue_memory_impl.h

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _PSTL_GLUE_MEMORY_IMPL_H
 #define _PSTL_GLUE_MEMORY_IMPL_H
 
 #include "pstl_config.h"
 
+#include "algorithm_fwd.h"
 #include "execution_defs.h"
 #include "utils.h"
-#include "algorithm_fwd.h"
 
 #include "execution_impl.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace std
-{
+namespace std {
 
 // [uninitialized.copy]
 
 template <class _ExecutionPolicy, class _InputIterator, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-uninitialized_copy(_ExecutionPolicy&& __exec, _InputIterator __first, _InputIterator __last, _ForwardIterator __result)
-{
-    typedef typename iterator_traits<_InputIterator>::value_type _ValueType1;
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType2;
-    typedef typename iterator_traits<_InputIterator>::reference _ReferenceType1;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType2;
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> uninitialized_copy(
+    _ExecutionPolicy&& __exec, _InputIterator __first, _InputIterator __last, _ForwardIterator __result) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__invoke_if_else(
-        std::integral_constant < bool, std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2_brick(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-                [](_InputIterator __begin, _InputIterator __end, _ForwardIterator __res)
-                { return __pstl::__internal::__brick_copy(__begin, __end, __res, __is_vector{}); });
-        },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                       __last, __result,
-                                                       [](_ReferenceType1 __val1, _ReferenceType2 __val2)
-                                                       { ::new (std::addressof(__val2)) _ValueType2(__val1); });
-        });
+      std::integral_constant < bool,
+      std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __last,
+            __result,
+            [](_InputIterator __begin, _InputIterator __end, _ForwardIterator __res) {
+              return __pstl::__internal::__brick_copy(__begin, __end, __res, __is_vector{});
+            });
+      [&]() {
+        return __pstl::__internal::__pattern_walk2(
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __last,
+            __result,
+            [](_ReferenceType1 __val1, _ReferenceType2 __val2) { ::new (std::addressof(__val2)) _ValueType2(__val1); });
 }
 
 template <class _ExecutionPolicy, class _InputIterator, class _Size, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-uninitialized_copy_n(_ExecutionPolicy&& __exec, _InputIterator __first, _Size __n, _ForwardIterator __result)
-{
-    typedef typename iterator_traits<_InputIterator>::value_type _ValueType1;
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType2;
-    typedef typename iterator_traits<_InputIterator>::reference _ReferenceType1;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType2;
+uninitialized_copy_n(_ExecutionPolicy&& __exec, _InputIterator __first, _Size __n, _ForwardIterator __result) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__invoke_if_else(
-        std::integral_constant < bool, std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2_brick_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, __result,
-                [](_InputIterator __begin, _Size __sz, _ForwardIterator __res)
-                { return __pstl::__internal::__brick_copy_n(__begin, __sz, __res, __is_vector{}); });
-        },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2_n(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                         __first, __n, __result,
-                                                         [](_ReferenceType1 __val1, _ReferenceType2 __val2)
-                                                         { ::new (std::addressof(__val2)) _ValueType2(__val1); });
-        });
+      std::integral_constant < bool,
+      std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __n,
+            __result,
+            [](_InputIterator __begin, _Size __sz, _ForwardIterator __res) {
+              return __pstl::__internal::__brick_copy_n(__begin, __sz, __res, __is_vector{});
+            });
+      [&]() {
+        return __pstl::__internal::__pattern_walk2_n(
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __n,
+            __result,
+            [](_ReferenceType1 __val1, _ReferenceType2 __val2) { ::new (std::addressof(__val2)) _ValueType2(__val1); });
 }
 
 // [uninitialized.move]
 
 template <class _ExecutionPolicy, class _InputIterator, class _ForwardIterator>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-uninitialized_move(_ExecutionPolicy&& __exec, _InputIterator __first, _InputIterator __last, _ForwardIterator __result)
-{
-    typedef typename iterator_traits<_InputIterator>::value_type _ValueType1;
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType2;
-    typedef typename iterator_traits<_InputIterator>::reference _ReferenceType1;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType2;
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator> uninitialized_move(
+    _ExecutionPolicy&& __exec, _InputIterator __first, _InputIterator __last, _ForwardIterator __result) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__invoke_if_else(
-        std::integral_constant < bool, std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2_brick(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-                [](_InputIterator __begin, _InputIterator __end, _ForwardIterator __res)
-                { return __pstl::__internal::__brick_copy(__begin, __end, __res, __is_vector{}); });
-        },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-                [](_ReferenceType1 __val1, _ReferenceType2 __val2)
-                { ::new (std::addressof(__val2)) _ValueType2(std::move(__val1)); });
-        });
+      std::integral_constant < bool,
+      std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __last,
+            __result,
+            [](_InputIterator __begin, _InputIterator __end, _ForwardIterator __res) {
+              return __pstl::__internal::__brick_copy(__begin, __end, __res, __is_vector{});
+            });
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __last,
+            __result,
+            [](_ReferenceType1 __val1, _ReferenceType2 __val2) {
+              ::new (std::addressof(__val2)) _ValueType2(std::move(__val1));
+            });
 }
 
 template <class _ExecutionPolicy, class _InputIterator, class _Size, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-uninitialized_move_n(_ExecutionPolicy&& __exec, _InputIterator __first, _Size __n, _ForwardIterator __result)
-{
-    typedef typename iterator_traits<_InputIterator>::value_type _ValueType1;
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType2;
-    typedef typename iterator_traits<_InputIterator>::reference _ReferenceType1;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType2;
+uninitialized_move_n(_ExecutionPolicy&& __exec, _InputIterator __first, _Size __n, _ForwardIterator __result) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__invoke_if_else(
-        std::integral_constant < bool, std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2_brick_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, __result,
-                [](_InputIterator __begin, _Size __sz, _ForwardIterator __res)
-                { return __pstl::__internal::__brick_copy_n(__begin, __sz, __res, __is_vector{}); });
-        },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk2_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, __result,
-                [](_ReferenceType1 __val1, _ReferenceType2 __val2)
-                { ::new (std::addressof(__val2)) _ValueType2(std::move(__val1)); });
-        });
+      std::integral_constant < bool,
+      std::is_trivial<_ValueType1>::value&& std::is_trivial<_ValueType2>::value > (),
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __n,
+            __result,
+            [](_InputIterator __begin, _Size __sz, _ForwardIterator __res) {
+              return __pstl::__internal::__brick_copy_n(__begin, __sz, __res, __is_vector{});
+            });
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __n,
+            __result,
+            [](_ReferenceType1 __val1, _ReferenceType2 __val2) {
+              ::new (std::addressof(__val2)) _ValueType2(std::move(__val1));
+            });
 }
 
 // [uninitialized.fill]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-uninitialized_fill(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+uninitialized_fill(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    __pstl::__internal::__invoke_if_else(
-        std::is_arithmetic<_ValueType>(),
-        [&]()
-        {
-            __pstl::__internal::__pattern_walk_brick(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                [&__value](_ForwardIterator __begin, _ForwardIterator __end)
-                { __pstl::__internal::__brick_fill(__begin, __end, _ValueType(__value), __is_vector{}); });
-        },
-        [&]()
-        {
-            __pstl::__internal::__pattern_walk1(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                [&__value](_ReferenceType __val)
-                                                { ::new (std::addressof(__val)) _ValueType(__value); });
-        });
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __last,
+            [&__value](_ForwardIterator __begin, _ForwardIterator __end) {
+              __pstl::__internal::__brick_fill(__begin, __end, _ValueType(__value), __is_vector{});
+            });
+      [&]() {
+        __pstl::__internal::__pattern_walk1(
+            __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, [&__value](_ReferenceType __val) {
+              ::new (std::addressof(__val)) _ValueType(__value);
+            });
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-uninitialized_fill_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n, const _Tp& __value)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+uninitialized_fill_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n, const _Tp& __value) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__invoke_if_else(
-        std::is_arithmetic<_ValueType>(),
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk_brick_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n,
-                [&__value](_ForwardIterator __begin, _Size __count)
-                { return __pstl::__internal::__brick_fill_n(__begin, __count, _ValueType(__value), __is_vector{}); });
-        },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk1_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n,
-                [&__value](_ReferenceType __val) { ::new (std::addressof(__val)) _ValueType(__value); });
-        });
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __n,
+            [&__value](_ForwardIterator __begin, _Size __count) {
+              return __pstl::__internal::__brick_fill_n(__begin, __count, _ValueType(__value), __is_vector{});
+            });
+      [&]() {
+            __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, [&__value](_ReferenceType __val) {
+              ::new (std::addressof(__val)) _ValueType(__value);
+            });
 }
 
 // [specialized.destroy]
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-destroy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+destroy(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    __pstl::__internal::__invoke_if_not(std::is_trivially_destructible<_ValueType>(),
-                                        [&]()
-                                        {
-                                            __pstl::__internal::__pattern_walk1(
-                                                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                [](_ReferenceType __val) { __val.~_ValueType(); });
-                                        });
+  __pstl::__internal::__invoke_if_not(std::is_trivially_destructible<_ValueType>(), [&]() {
+        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, [](_ReferenceType __val) {
+          __val.~_ValueType();
+        });
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-destroy_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+destroy_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    return __pstl::__internal::__invoke_if_else(
-        std::is_trivially_destructible<_ValueType>(), [&]() { return std::next(__first, __n); },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk1_n(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                         __first, __n,
-                                                         [](_ReferenceType __val) { __val.~_ValueType(); });
-        });
+      std::is_trivially_destructible<_ValueType>(),
+      [&]() { return std::next(__first, __n); },
+      [&]() {
+        return __pstl::__internal::__pattern_walk1_n(
+            __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, [](_ReferenceType __val) {
+              __val.~_ValueType();
+            });
 }
 
 // [uninitialized.construct.default]
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-uninitialized_default_construct(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+uninitialized_default_construct(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    __pstl::__internal::__invoke_if_not(std::is_trivial<_ValueType>(),
-                                        [&]()
-                                        {
-                                            __pstl::__internal::__pattern_walk1(
-                                                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                [](_ReferenceType __val) { ::new (std::addressof(__val)) _ValueType; });
-                                        });
+  __pstl::__internal::__invoke_if_not(std::is_trivial<_ValueType>(), [&]() {
+        __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, [](_ReferenceType __val) {
+          ::new (std::addressof(__val)) _ValueType;
+        });
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-uninitialized_default_construct_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+uninitialized_default_construct_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    return __pstl::__internal::__invoke_if_else(
-        std::is_trivial<_ValueType>(), [&]() { return std::next(__first, __n); },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk1_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n,
-                [](_ReferenceType __val) { ::new (std::addressof(__val)) _ValueType; });
-        });
+      std::is_trivial<_ValueType>(),
+      [&]() { return std::next(__first, __n); },
+      [&]() {
+            __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, [](_ReferenceType __val) {
+              ::new (std::addressof(__val)) _ValueType;
+            });
 }
 
 // [uninitialized.construct.value]
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void>
-uninitialized_value_construct(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+uninitialized_value_construct(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    __pstl::__internal::__invoke_if_else(
-        std::is_trivial<_ValueType>(),
-        [&]()
-        {
-            __pstl::__internal::__pattern_walk_brick(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                [](_ForwardIterator __begin, _ForwardIterator __end)
-                { __pstl::__internal::__brick_fill(__begin, __end, _ValueType(), __is_vector{}); });
-        },
-        [&]()
-        {
-            __pstl::__internal::__pattern_walk1(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                [](_ReferenceType __val)
-                                                { ::new (std::addressof(__val)) _ValueType(); });
-        });
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __last,
+            [](_ForwardIterator __begin, _ForwardIterator __end) {
+              __pstl::__internal::__brick_fill(__begin, __end, _ValueType(), __is_vector{});
+            });
+      [&]() {
+        __pstl::__internal::__pattern_walk1(
+            __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, [](_ReferenceType __val) {
+              ::new (std::addressof(__val)) _ValueType();
+            });
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Size>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator>
-uninitialized_value_construct_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    typedef typename iterator_traits<_ForwardIterator>::reference _ReferenceType;
+uninitialized_value_construct_n(_ExecutionPolicy&& __exec, _ForwardIterator __first, _Size __n) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
 
-    using __is_vector = typename decltype(__dispatch_tag)::__is_vector;
 
-    return __pstl::__internal::__invoke_if_else(
-        std::is_trivial<_ValueType>(),
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk_brick_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n,
-                [](_ForwardIterator __begin, _Size __count)
-                { return __pstl::__internal::__brick_fill_n(__begin, __count, _ValueType(), __is_vector{}); });
-        },
-        [&]()
-        {
-            return __pstl::__internal::__pattern_walk1_n(
-                __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n,
-                [](_ReferenceType __val) { ::new (std::addressof(__val)) _ValueType(); });
-        });
+      [&]() {
+            __dispatch_tag,
+            std::forward<_ExecutionPolicy>(__exec),
+            __first,
+            __n,
+            [](_ForwardIterator __begin, _Size __count) {
+              return __pstl::__internal::__brick_fill_n(__begin, __count, _ValueType(), __is_vector{});
+            });
+      [&]() {
+            __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __n, [](_ReferenceType __val) {
+              ::new (std::addressof(__val)) _ValueType();
+            });
 }
 
 } // namespace std
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_GLUE_MEMORY_IMPL_H */

libcxx/include/pstl/internal/glue_numeric_defs.h

 
 #include <iterator>
 
 #include "execution_defs.h"
 #include "pstl_config.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace std
-{
+namespace std {
 // [reduce]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init,
+reduce(_ExecutionPolicy&& __exec,
+       _ForwardIterator __first,
+       _ForwardIterator __last,
+       _Tp __init,
        _BinaryOperation __binary_op);
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
 reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init);
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy,
                                                  typename iterator_traits<_ForwardIterator>::value_type>
 reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _Tp __init);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp> transform_reduce(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Tp __init);
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation1,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _Tp,
+          class _BinaryOperation1,
           class _BinaryOperation2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _Tp __init, _BinaryOperation1 __binary_op1,
-                 _BinaryOperation2 __binary_op2);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp> transform_reduce(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Tp __init,
+    _BinaryOperation1 __binary_op1,
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation, class _UnaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init,
-                 _BinaryOperation __binary_op, _UnaryOperation __unary_op);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp> transform_reduce(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op);
 
 // [exclusive.scan]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _Tp __init);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> exclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Tp __init);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _Tp __init, _BinaryOperation __binary_op);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> exclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Tp __init,
+    _BinaryOperation __binary_op);
 
 // [inclusive.scan]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> inclusive_scan(
+    _ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _BinaryOperation __binary_op);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _BinaryOperation __binary_op, _Tp __init);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op,
+    _Tp __init);
 
 // [transform.exclusive.scan]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _Tp,
+          class _BinaryOperation,
           class _UnaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform_exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                         _ForwardIterator2 __result, _Tp __init, _BinaryOperation __binary_op,
-                         _UnaryOperation __unary_op);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> transform_exclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Tp __init,
+    _BinaryOperation __binary_op,
 
 // [transform.inclusive.scan]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation,
-          class _UnaryOperation, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform_inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                         _ForwardIterator2 __result, _BinaryOperation __binary_op, _UnaryOperation __unary_op,
-                         _Tp __init);
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _BinaryOperation,
+          class _UnaryOperation,
+          class _Tp>
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> transform_inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op,
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryOperation,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _UnaryOperation,
           class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform_inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                         _ForwardIterator2 __result, _BinaryOperation __binary_op, _UnaryOperation __unary_op);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> transform_inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op);
 
 // [adjacent.difference]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-adjacent_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                    _ForwardIterator2 __d_first, _BinaryOperation op);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> adjacent_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __d_first,
+    _BinaryOperation op);
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-adjacent_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                    _ForwardIterator2 __d_first);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> adjacent_difference(
+    _ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __d_first);
 
 } // namespace std
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_GLUE_NUMERIC_DEFS_H */

libcxx/include/pstl/internal/glue_numeric_impl.h

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _PSTL_GLUE_NUMERIC_IMPL_H
 #define _PSTL_GLUE_NUMERIC_IMPL_H
 
 #include <functional>
 
 #include "pstl_config.h"
 
-#include "utils.h"
-#include "numeric_fwd.h"
 #include "execution_impl.h"
+#include "numeric_fwd.h"
+#include "utils.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace std
-{
+namespace std {
 
 // [reduce]
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init,
-       _BinaryOperation __binary_op)
-{
-    return transform_reduce(std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, __binary_op,
-                            __pstl::__internal::__no_op());
+reduce(_ExecutionPolicy&& __exec,
+       _ForwardIterator __first,
+       _ForwardIterator __last,
+       _Tp __init,
+       _BinaryOperation __binary_op) {
+  return transform_reduce(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, __binary_op, __pstl::__internal::__no_op());
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init)
-{
-    return transform_reduce(std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, std::plus<_Tp>(),
-                            __pstl::__internal::__no_op());
+reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init) {
+  return transform_reduce(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, std::plus<_Tp>(), __pstl::__internal::__no_op());
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator>
 __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy,
                                                  typename iterator_traits<_ForwardIterator>::value_type>
-reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
-{
-    typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
-    return transform_reduce(std::forward<_ExecutionPolicy>(__exec), __first, __last, _ValueType{},
-                            std::plus<_ValueType>(), __pstl::__internal::__no_op());
+reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last) {
+  return transform_reduce(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      _ValueType{},
+      std::plus<_ValueType>(),
+      __pstl::__internal::__no_op());
 }
 
 // [transform.reduce]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _Tp __init)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp> transform_reduce(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Tp __init) {
 
-    typedef typename iterator_traits<_ForwardIterator1>::value_type _InputType;
-    return __pstl::__internal::__pattern_transform_reduce(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                          __first1, __last1, __first2, __init, std::plus<_InputType>(),
-                                                          std::multiplies<_InputType>());
+  return __pstl::__internal::__pattern_transform_reduce(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      __init,
+      std::plus<_InputType>(),
 }
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation1,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _Tp,
+          class _BinaryOperation1,
           class _BinaryOperation2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                 _ForwardIterator2 __first2, _Tp __init, _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first1, __first2);
-    return __pstl::__internal::__pattern_transform_reduce(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                          __first1, __last1, __first2, __init, __binary_op1,
-                                                          __binary_op2);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp> transform_reduce(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Tp __init,
+    _BinaryOperation1 __binary_op1,
+    _BinaryOperation2 __binary_op2) {
+  return __pstl::__internal::__pattern_transform_reduce(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first1,
+      __last1,
+      __first2,
+      __init,
+      __binary_op1,
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation, class _UnaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
-transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init,
-                 _BinaryOperation __binary_op, _UnaryOperation __unary_op)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first);
-    return __pstl::__internal::__pattern_transform_reduce(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                          __first, __last, __init, __binary_op, __unary_op);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp> transform_reduce(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op) {
+  return __pstl::__internal::__pattern_transform_reduce(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, __binary_op, __unary_op);
 }
 
 // [exclusive.scan]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _Tp __init)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> exclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Tp __init) {
 
-    using namespace __pstl;
-    return __internal::__pattern_transform_scan(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                __result, __pstl::__internal::__no_op(), __init, std::plus<_Tp>(),
-                                                /*inclusive=*/std::false_type());
+  return __internal::__pattern_transform_scan(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      __pstl::__internal::__no_op(),
+      __init,
+      std::plus<_Tp>(),
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _Tp __init, _BinaryOperation __binary_op)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> exclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Tp __init,
+    _BinaryOperation __binary_op) {
 
-    using namespace __pstl;
-    return __internal::__pattern_transform_scan(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                                                __result, __pstl::__internal::__no_op(), __init, __binary_op,
-                                                /*inclusive=*/std::false_type());
+  return __internal::__pattern_transform_scan(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      __pstl::__internal::__no_op(),
+      __init,
+      __binary_op,
 }
 
 // [inclusive.scan]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result)
-{
-    typedef typename iterator_traits<_ForwardIterator1>::value_type _InputType;
-    return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
-                                    std::plus<_InputType>(), __pstl::__internal::__no_op());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> inclusive_scan(
+    _ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result) {
+  return transform_inclusive_scan(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      std::plus<_InputType>(),
+      __pstl::__internal::__no_op());
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _BinaryOperation __binary_op)
-{
-    return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __binary_op,
-                                    __pstl::__internal::__no_op());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op) {
+  return transform_inclusive_scan(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __binary_op, __pstl::__internal::__no_op());
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-               _ForwardIterator2 __result, _BinaryOperation __binary_op, _Tp __init)
-{
-    return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __binary_op,
-                                    __pstl::__internal::__no_op(), __init);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op,
+    _Tp __init) {
+  return transform_inclusive_scan(
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      __binary_op,
+      __pstl::__internal::__no_op(),
+      __init);
 }
 
 // [transform.exclusive.scan]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _Tp,
+          class _BinaryOperation,
           class _UnaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform_exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                         _ForwardIterator2 __result, _Tp __init, _BinaryOperation __binary_op,
-                         _UnaryOperation __unary_op)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> transform_exclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op) {
 
-    return __pstl::__internal::__pattern_transform_scan(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                        __last, __result, __unary_op, __init, __binary_op,
-                                                        /*inclusive=*/std::false_type());
+  return __pstl::__internal::__pattern_transform_scan(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      __unary_op,
+      __init,
+      __binary_op,
 }
 
 // [transform.inclusive.scan]
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation,
-          class _UnaryOperation, class _Tp>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform_inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                         _ForwardIterator2 __result, _BinaryOperation __binary_op, _UnaryOperation __unary_op,
-                         _Tp __init)
-{
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __result);
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _BinaryOperation,
+          class _UnaryOperation,
+          class _Tp>
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> transform_inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op,
+    _Tp __init) {
 
-    return __pstl::__internal::__pattern_transform_scan(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first,
-                                                        __last, __result, __unary_op, __init, __binary_op,
-                                                        /*inclusive=*/std::true_type());
+  return __pstl::__internal::__pattern_transform_scan(
+      __dispatch_tag,
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last,
+      __result,
+      __unary_op,
+      __init,
+      __binary_op,
 }
 
-template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryOperation,
+template <class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _UnaryOperation,
           class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-transform_inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                         _ForwardIterator2 __result, _BinaryOperation __binary_op, _UnaryOperation __unary_op)
-{
-    if (__first != __last)
-    {
-        auto __tmp = __unary_op(*__first);
-        *__result = __tmp;
-        return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), ++__first, __last, ++__result,
-                                        __binary_op, __unary_op, __tmp);
-    }
-    else
-    {
-        return __result;
-    }
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> transform_inclusive_scan(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __result,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op) {
+  if (__first != __last) {
+    *__result  = __tmp;
+    return transform_inclusive_scan(
+        std::forward<_ExecutionPolicy>(__exec), ++__first, __last, ++__result, __binary_op, __unary_op, __tmp);
+  } else {
 }
 
 // [adjacent.difference]
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-adjacent_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                    _ForwardIterator2 __d_first, _BinaryOperation __op)
-{
-
-    if (__first == __last)
-        return __d_first;
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> adjacent_difference(
+    _ExecutionPolicy&& __exec,
+    _ForwardIterator1 __first,
+    _ForwardIterator1 __last,
+    _ForwardIterator2 __d_first,
+    _BinaryOperation __op) {
 
-    auto __dispatch_tag = __pstl::__internal::__select_backend(__exec, __first, __d_first);
 
-    return __pstl::__internal::__pattern_adjacent_difference(__dispatch_tag, std::forward<_ExecutionPolicy>(__exec),
-                                                             __first, __last, __d_first, __op);
+  return __pstl::__internal::__pattern_adjacent_difference(
+      __dispatch_tag, std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first, __op);
 }
 
 template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
-__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
-adjacent_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
-                    _ForwardIterator2 __d_first)
-{
-    typedef typename iterator_traits<_ForwardIterator1>::value_type _ValueType;
-    return adjacent_difference(std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first,
-                               std::minus<_ValueType>());
+__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> adjacent_difference(
+    _ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __d_first) {
+  return adjacent_difference(
+      std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first, std::minus<_ValueType>());
 }
 
 } // namespace std
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_GLUE_NUMERIC_IMPL_H_ */

libcxx/include/pstl/internal/memory_impl.h

 
 #include <iterator>
 
 #include "pstl_config.h"
 #include "unseq_backend_simd.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace __internal
-{
+namespace __pstl {
+namespace __internal {
 
 //------------------------------------------------------------------------
 // uninitialized_move
 //------------------------------------------------------------------------
 
 template <typename _ForwardIterator, typename _OutputIterator>
-_OutputIterator
-__brick_uninitialized_move(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result,
-                           /*vector=*/std::false_type) noexcept
-{
-    using _ValueType = typename std::iterator_traits<_OutputIterator>::value_type;
-    for (; __first != __last; ++__first, ++__result)
-    {
-        ::new (std::addressof(*__result)) _ValueType(std::move(*__first));
-    }
-    return __result;
+_OutputIterator __brick_uninitialized_move(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    /*vector=*/std::false_type) noexcept {
+  for (; __first != __last; ++__first, ++__result) {
 }
 
 template <typename _RandomAccessIterator, typename _OutputIterator>
-_OutputIterator
-__brick_uninitialized_move(_RandomAccessIterator __first, _RandomAccessIterator __last, _OutputIterator __result,
-                           /*vector=*/std::true_type) noexcept
-{
-    using __ValueType = typename std::iterator_traits<_OutputIterator>::value_type;
-    using _ReferenceType1 = typename std::iterator_traits<_RandomAccessIterator>::reference;
-    using _ReferenceType2 = typename std::iterator_traits<_OutputIterator>::reference;
+_OutputIterator __brick_uninitialized_move(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _OutputIterator __result,
+    /*vector=*/std::true_type) noexcept {
+  using __ValueType     = typename std::iterator_traits<_OutputIterator>::value_type;
 
-    return __unseq_backend::__simd_walk_2(
-        __first, __last - __first, __result,
-        [](_ReferenceType1 __x, _ReferenceType2 __y) { ::new (std::addressof(__y)) __ValueType(std::move(__x)); });
+      __first, __last - __first, __result, [](_ReferenceType1 __x, _ReferenceType2 __y) {
+        ::new (std::addressof(__y)) __ValueType(std::move(__x));
+      });
 }
 
 template <typename _Iterator>
-void
-__brick_destroy(_Iterator __first, _Iterator __last, /*vector*/ std::false_type) noexcept
-{
-    using _ValueType = typename std::iterator_traits<_Iterator>::value_type;
+void __brick_destroy(_Iterator __first, _Iterator __last, /*vector*/ std::false_type) noexcept {
 
-    for (; __first != __last; ++__first)
-        __first->~_ValueType();
 }
 
 template <typename _RandomAccessIterator>
-void
-__brick_destroy(_RandomAccessIterator __first, _RandomAccessIterator __last, /*vector*/ std::true_type) noexcept
-{
-    using _ValueType = typename std::iterator_traits<_RandomAccessIterator>::value_type;
-    using _ReferenceType = typename std::iterator_traits<_RandomAccessIterator>::reference;
+void __brick_destroy(_RandomAccessIterator __first, _RandomAccessIterator __last, /*vector*/ std::true_type) noexcept {
+  using _ValueType     = typename std::iterator_traits<_RandomAccessIterator>::value_type;
 
-    __unseq_backend::__simd_walk_1(__first, __last - __first, [](_ReferenceType __x) { __x.~_ValueType(); });
 }
 
 //------------------------------------------------------------------------
 // uninitialized copy
 //------------------------------------------------------------------------
 
 template <typename _ForwardIterator, typename _OutputIterator>
-_OutputIterator
-__brick_uninitialized_copy(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result,
-                           /*vector=*/std::false_type) noexcept
-{
-    using _ValueType = typename std::iterator_traits<_OutputIterator>::value_type;
-    for (; __first != __last; ++__first, ++__result)
-    {
-        ::new (std::addressof(*__result)) _ValueType(*__first);
-    }
-    return __result;
+_OutputIterator __brick_uninitialized_copy(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    /*vector=*/std::false_type) noexcept {
+  for (; __first != __last; ++__first, ++__result) {
 }
 
 template <typename _RandomAccessIterator, typename _OutputIterator>
-_OutputIterator
-__brick_uninitialized_copy(_RandomAccessIterator __first, _RandomAccessIterator __last, _OutputIterator __result,
-                           /*vector=*/std::true_type) noexcept
-{
-    using __ValueType = typename std::iterator_traits<_OutputIterator>::value_type;
-    using _ReferenceType1 = typename std::iterator_traits<_RandomAccessIterator>::reference;
-    using _ReferenceType2 = typename std::iterator_traits<_OutputIterator>::reference;
+_OutputIterator __brick_uninitialized_copy(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _OutputIterator __result,
+    /*vector=*/std::true_type) noexcept {
+  using __ValueType     = typename std::iterator_traits<_OutputIterator>::value_type;
 
-    return __unseq_backend::__simd_walk_2(
-        __first, __last - __first, __result,
-        [](_ReferenceType1 __x, _ReferenceType2 __y) { ::new (std::addressof(__y)) __ValueType(__x); });
+      __first, __last - __first, __result, [](_ReferenceType1 __x, _ReferenceType2 __y) {
+        ::new (std::addressof(__y)) __ValueType(__x);
+      });
 }
 
 } // namespace __internal
 } // namespace __pstl
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_MEMORY_IMPL_H */

libcxx/include/pstl/internal/numeric_fwd.h

 
 #include <type_traits>
 #include <utility>
 
 #include "pstl_config.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace __internal
-{
+namespace __pstl {
+namespace __internal {
 
 //------------------------------------------------------------------------
 // transform_reduce (version with two binary functions, according to draft N4659)
 //------------------------------------------------------------------------
 
-template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Tp, class _BinaryOperation1,
+template <class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _Tp,
+          class _BinaryOperation1,
           class _BinaryOperation2>
-_Tp __brick_transform_reduce(_RandomAccessIterator1, _RandomAccessIterator1, _RandomAccessIterator2, _Tp,
-                             _BinaryOperation1, _BinaryOperation2,
-                             /*__is_vector=*/std::true_type) noexcept;
+_Tp __brick_transform_reduce(
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _Tp,
+    _BinaryOperation1,
+    _BinaryOperation2,
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>
-_Tp __brick_transform_reduce(_ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _Tp, _BinaryOperation1,
-                             _BinaryOperation2,
-                             /*__is_vector=*/std::false_type) noexcept;
+_Tp __brick_transform_reduce(
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _Tp,
+    _BinaryOperation1,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp,
-          class _BinaryOperation1, class _BinaryOperation2>
-_Tp
-__pattern_transform_reduce(_Tag, _ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _Tp,
-                           _BinaryOperation1, _BinaryOperation2) noexcept;
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _Tp, class _BinaryOperation1, class _BinaryOperation2>
-_Tp
-__pattern_transform_reduce(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator1,
-                           _RandomAccessIterator1, _RandomAccessIterator2, _Tp, _BinaryOperation1, _BinaryOperation2);
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _Tp,
+          class _BinaryOperation1,
+          class _BinaryOperation2>
+_Tp __pattern_transform_reduce(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1,
+    _ForwardIterator1,
+    _ForwardIterator2,
+    _Tp,
+    _BinaryOperation1,
+    _BinaryOperation2) noexcept;
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _Tp,
+          class _BinaryOperation1,
+          class _BinaryOperation2>
+_Tp __pattern_transform_reduce(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator1,
+    _RandomAccessIterator1,
+    _RandomAccessIterator2,
+    _Tp,
+    _BinaryOperation1,
+    _BinaryOperation2);
 
 //------------------------------------------------------------------------
 // transform_reduce (version with unary and binary functions)
 //------------------------------------------------------------------------
 
 template <class _RandomAccessIterator, class _Tp, class _UnaryOperation, class _BinaryOperation>
-_Tp __brick_transform_reduce(_RandomAccessIterator, _RandomAccessIterator, _Tp, _BinaryOperation, _UnaryOperation,
-                             /*is_vector=*/std::true_type) noexcept;
+_Tp __brick_transform_reduce(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Tp,
+    _BinaryOperation,
+    _UnaryOperation,
 
 template <class _ForwardIterator, class _Tp, class _BinaryOperation, class _UnaryOperation>
-_Tp __brick_transform_reduce(_ForwardIterator, _ForwardIterator, _Tp, _BinaryOperation, _UnaryOperation,
-                             /*is_vector=*/std::false_type) noexcept;
+_Tp __brick_transform_reduce(
+    _ForwardIterator,
+    _ForwardIterator,
+    _Tp,
+    _BinaryOperation,
+    _UnaryOperation,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _Tp,
+          class _BinaryOperation,
           class _UnaryOperation>
-_Tp
-__pattern_transform_reduce(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Tp, _BinaryOperation,
-                           _UnaryOperation) noexcept;
+_Tp __pattern_transform_reduce(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _Tp, _BinaryOperation, _UnaryOperation) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Tp, class _BinaryOperation,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _Tp,
+          class _BinaryOperation,
           class _UnaryOperation>
-_Tp
-__pattern_transform_reduce(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                           _Tp, _BinaryOperation, _UnaryOperation);
+_Tp __pattern_transform_reduce(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _Tp,
+    _BinaryOperation,
+    _UnaryOperation);
 
 //------------------------------------------------------------------------
 // transform_exclusive_scan
 //
 // walk3 evaluates f(x,y,z) for (x,y,z) drawn from [first1,last1), [first2,...), [first3,...)
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator, class _UnaryOperation, class _Tp, class _BinaryOperation>
-std::pair<_OutputIterator, _Tp> __brick_transform_scan(_ForwardIterator, _ForwardIterator, _OutputIterator,
-                                                       _UnaryOperation, _Tp, _BinaryOperation,
-                                                       /*Inclusive*/ std::false_type) noexcept;
+std::pair<_OutputIterator, _Tp> __brick_transform_scan(
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator,
+    _UnaryOperation,
+    _Tp,
+    _BinaryOperation,
 
 template <class _RandomAccessIterator, class _OutputIterator, class _UnaryOperation, class _Tp, class _BinaryOperation>
-std::pair<_OutputIterator, _Tp> __brick_transform_scan(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator,
-                                                       _UnaryOperation, _Tp, _BinaryOperation,
-                                                       /*Inclusive*/ std::true_type) noexcept;
+std::pair<_OutputIterator, _Tp> __brick_transform_scan(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _UnaryOperation,
+    _Tp,
+    _BinaryOperation,
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _UnaryOperation,
-          class _Tp, class _BinaryOperation, class _Inclusive>
-_OutputIterator
-__pattern_transform_scan(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator, _UnaryOperation,
-                         _Tp, _BinaryOperation, _Inclusive) noexcept;
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator,
-          class _UnaryOperation, class _Tp, class _BinaryOperation, class _Inclusive>
-typename std::enable_if<!std::is_floating_point<_Tp>::value, _OutputIterator>::type
-__pattern_transform_scan(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&&, _RandomAccessIterator,
-                         _RandomAccessIterator, _OutputIterator, _UnaryOperation, _Tp, _BinaryOperation, _Inclusive);
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator,
-          class _UnaryOperation, class _Tp, class _BinaryOperation, class _Inclusive>
-typename std::enable_if<std::is_floating_point<_Tp>::value, _OutputIterator>::type
-__pattern_transform_scan(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator,
-                         _OutputIterator, _UnaryOperation, _Tp, _BinaryOperation, _Inclusive);
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
+          class _Inclusive>
+_OutputIterator __pattern_transform_scan(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator,
+    _UnaryOperation,
+    _Tp,
+    _BinaryOperation,
+    _Inclusive) noexcept;
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
+          class _Inclusive>
+typename std::enable_if<!std::is_floating_point<_Tp>::value, _OutputIterator>::type __pattern_transform_scan(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _UnaryOperation,
+    _Tp,
+    _BinaryOperation,
+    _Inclusive);
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
+          class _Inclusive>
+typename std::enable_if<std::is_floating_point<_Tp>::value, _OutputIterator>::type __pattern_transform_scan(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _UnaryOperation,
+    _Tp,
+    _BinaryOperation,
+    _Inclusive);
 
 //------------------------------------------------------------------------
 // adjacent_difference
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator, class _BinaryOperation>
-_OutputIterator __brick_adjacent_difference(_ForwardIterator, _ForwardIterator, _OutputIterator, _BinaryOperation,
-                                            /*is_vector*/ std::false_type) noexcept;
+_OutputIterator __brick_adjacent_difference(
+    _ForwardIterator,
+    _ForwardIterator,
+    _OutputIterator,
+    _BinaryOperation,
 
 template <class _RandomAccessIterator, class _OutputIterator, class _BinaryOperation>
-_OutputIterator __brick_adjacent_difference(_RandomAccessIterator, _RandomAccessIterator, _OutputIterator,
-                                            _BinaryOperation,
-                                            /*is_vector*/ std::true_type) noexcept;
+_OutputIterator __brick_adjacent_difference(
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _BinaryOperation>
-_OutputIterator
-__pattern_adjacent_difference(_Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator,
-                              _BinaryOperation) noexcept;
+_OutputIterator __pattern_adjacent_difference(
+    _Tag, _ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, _OutputIterator, _BinaryOperation) noexcept;
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator,
           class _BinaryOperation>
-_OutputIterator
-__pattern_adjacent_difference(__parallel_tag<_IsVector>, _ExecutionPolicy&&, _RandomAccessIterator,
-                              _RandomAccessIterator, _OutputIterator, _BinaryOperation);
+_OutputIterator __pattern_adjacent_difference(
+    __parallel_tag<_IsVector>,
+    _ExecutionPolicy&&,
+    _RandomAccessIterator,
+    _RandomAccessIterator,
+    _OutputIterator,
+    _BinaryOperation);
 
 } // namespace __internal
 } // namespace __pstl
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_NUMERIC_FWD_H */

libcxx/include/pstl/internal/numeric_impl.h

 #include "parallel_backend.h"
 #include "pstl_config.h"
 #include "execution_impl.h"
 #include "unseq_backend_simd.h"
 #include "algorithm_fwd.h"
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace __internal
-{
+namespace __pstl {
+namespace __internal {
 
 //------------------------------------------------------------------------
 // transform_reduce (version with two binary functions, according to draft N4659)
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation1, class _BinaryOperation2>
-_Tp
-__brick_transform_reduce(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _Tp __init,
-                         _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2,
-                         /*is_vector=*/std::false_type) noexcept
-{
-    return std::inner_product(__first1, __last1, __first2, __init, __binary_op1, __binary_op2);
+_Tp __brick_transform_reduce(
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Tp __init,
+    _BinaryOperation1 __binary_op1,
+    _BinaryOperation2 __binary_op2,
+    /*is_vector=*/std::false_type) noexcept {
 }
 
-template <class _RandomAccessIterator1, class _RandomAccessIterator2, class _Tp, class _BinaryOperation1,
+template <class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _Tp,
+          class _BinaryOperation1,
           class _BinaryOperation2>
-_Tp
-__brick_transform_reduce(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
-                         _RandomAccessIterator2 __first2, _Tp __init, _BinaryOperation1 __binary_op1,
-                         _BinaryOperation2 __binary_op2,
-                         /*is_vector=*/std::true_type) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::difference_type _DifferenceType;
-    return __unseq_backend::__simd_transform_reduce(
-        __last1 - __first1, __init, __binary_op1,
-        [=, &__binary_op2](_DifferenceType __i) { return __binary_op2(__first1[__i], __first2[__i]); });
+_Tp __brick_transform_reduce(
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _Tp __init,
+    _BinaryOperation1 __binary_op1,
+    /*is_vector=*/std::true_type) noexcept {
+      __last1 - __first1, __init, __binary_op1, [=, &__binary_op2](_DifferenceType __i) {
+        return __binary_op2(__first1[__i], __first2[__i]);
+      });
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp,
-          class _BinaryOperation1, class _BinaryOperation2>
-_Tp
-__pattern_transform_reduce(_Tag, _ExecutionPolicy&&, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
-                           _ForwardIterator2 __first2, _Tp __init, _BinaryOperation1 __binary_op1,
-                           _BinaryOperation2 __binary_op2) noexcept
-{
-    return __brick_transform_reduce(__first1, __last1, __first2, __init, __binary_op1, __binary_op2,
-                                    typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
-          class _Tp, class _BinaryOperation1, class _BinaryOperation2>
-_Tp
-__pattern_transform_reduce(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator1 __first1,
-                           _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, _Tp __init,
-                           _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator1,
+          class _ForwardIterator2,
+          class _Tp,
+          class _BinaryOperation1,
+          class _BinaryOperation2>
+_Tp __pattern_transform_reduce(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator1 __first1,
+    _ForwardIterator1 __last1,
+    _ForwardIterator2 __first2,
+    _Tp __init,
+    _BinaryOperation1 __binary_op1,
+    _BinaryOperation2 __binary_op2) noexcept {
+  return __brick_transform_reduce(
+      __first1, __last1, __first2, __init, __binary_op1, __binary_op2, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
+          class _Tp,
+          class _BinaryOperation1,
+          class _BinaryOperation2>
+_Tp __pattern_transform_reduce(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first1,
+    _RandomAccessIterator1 __last1,
+    _RandomAccessIterator2 __first2,
+    _Tp __init,
+    _BinaryOperation1 __binary_op1,
+    _BinaryOperation2 __binary_op2) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __par_backend::__parallel_transform_reduce(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first1, __last1,
-                [__first1, __first2, __binary_op2](_RandomAccessIterator1 __i) mutable
-                { return __binary_op2(*__i, *(__first2 + (__i - __first1))); },
-                __init,
-                __binary_op1, // Combine
-                [__first1, __first2, __binary_op1, __binary_op2](_RandomAccessIterator1 __i, _RandomAccessIterator1 __j,
-                                                                 _Tp __init) -> _Tp
-                {
-                    return __internal::__brick_transform_reduce(__i, __j, __first2 + (__i - __first1), __init,
-                                                                __binary_op1, __binary_op2, _IsVector{});
-                });
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first1,
+        __last1,
+        [__first1, __first2, __binary_op2](_RandomAccessIterator1 __i) mutable {
+          return __binary_op2(*__i, *(__first2 + (__i - __first1)));
+        },
+        [__first1, __first2, __binary_op1, __binary_op2](
+            _RandomAccessIterator1 __i, _RandomAccessIterator1 __j, _Tp __init) -> _Tp {
+          return __internal::__brick_transform_reduce(
+              __i, __j, __first2 + (__i - __first1), __init, __binary_op1, __binary_op2, _IsVector{});
 }
 
 //------------------------------------------------------------------------
 // transform_reduce (version with unary and binary functions)
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _Tp, class _BinaryOperation, class _UnaryOperation>
-_Tp
-__brick_transform_reduce(_ForwardIterator __first, _ForwardIterator __last, _Tp __init, _BinaryOperation __binary_op,
-                         _UnaryOperation __unary_op, /*is_vector=*/std::false_type) noexcept
-{
-    return std::transform_reduce(__first, __last, __init, __binary_op, __unary_op);
+_Tp __brick_transform_reduce(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op,
+    /*is_vector=*/std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator, class _Tp, class _UnaryOperation, class _BinaryOperation>
-_Tp
-__brick_transform_reduce(_RandomAccessIterator __first, _RandomAccessIterator __last, _Tp __init,
-                         _BinaryOperation __binary_op, _UnaryOperation __unary_op,
-                         /*is_vector=*/std::true_type) noexcept
-{
-    typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type _DifferenceType;
-    return __unseq_backend::__simd_transform_reduce(
-        __last - __first, __init, __binary_op,
-        [=, &__unary_op](_DifferenceType __i) { return __unary_op(__first[__i]); });
+_Tp __brick_transform_reduce(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op,
+    /*is_vector=*/std::true_type) noexcept {
+      __last - __first, __init, __binary_op, [=, &__unary_op](_DifferenceType __i) {
+        return __unary_op(__first[__i]);
+      });
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation,
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _Tp,
+          class _BinaryOperation,
           class _UnaryOperation>
-_Tp
-__pattern_transform_reduce(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Tp __init,
-                           _BinaryOperation __binary_op, _UnaryOperation __unary_op) noexcept
-{
-    return __internal::__brick_transform_reduce(__first, __last, __init, __binary_op, __unary_op,
-                                                typename _Tag::__is_vector{});
-}
-
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _Tp, class _BinaryOperation,
+_Tp __pattern_transform_reduce(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op) noexcept {
+  return __internal::__brick_transform_reduce(
+      __first, __last, __init, __binary_op, __unary_op, typename _Tag::__is_vector{});
+}
+
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _Tp,
+          class _BinaryOperation,
           class _UnaryOperation>
-_Tp
-__pattern_transform_reduce(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                           _RandomAccessIterator __last, _Tp __init, _BinaryOperation __binary_op,
-                           _UnaryOperation __unary_op)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+_Tp __pattern_transform_reduce(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _UnaryOperation __unary_op) {
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            return __par_backend::__parallel_transform_reduce(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last,
-                [__unary_op](_RandomAccessIterator __i) mutable { return __unary_op(*__i); }, __init, __binary_op,
-                [__unary_op, __binary_op](_RandomAccessIterator __i, _RandomAccessIterator __j, _Tp __init) {
-                    return __internal::__brick_transform_reduce(__i, __j, __init, __binary_op, __unary_op, _IsVector{});
-                });
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __first,
+        __last,
+        [__unary_op](_RandomAccessIterator __i) mutable { return __unary_op(*__i); },
+        __init,
+        __binary_op,
 }
 
 //------------------------------------------------------------------------
 // transform_exclusive_scan
 //
 // walk3 evaluates f(x,y,z) for (x,y,z) drawn from [first1,last1), [first2,...), [first3,...)
 //------------------------------------------------------------------------
 
 // Exclusive form
 template <class _ForwardIterator, class _OutputIterator, class _UnaryOperation, class _Tp, class _BinaryOperation>
-std::pair<_OutputIterator, _Tp>
-__brick_transform_scan(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result,
-                       _UnaryOperation __unary_op, _Tp __init, _BinaryOperation __binary_op,
-                       /*Inclusive*/ std::false_type, /*is_vector=*/std::false_type) noexcept
-{
-    for (; __first != __last; ++__first, ++__result)
-    {
-        *__result = __init;
-        _PSTL_PRAGMA_FORCEINLINE
-        __init = __binary_op(__init, __unary_op(*__first));
-    }
-    return std::make_pair(__result, __init);
+std::pair<_OutputIterator, _Tp> __brick_transform_scan(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    _UnaryOperation __unary_op,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    /*Inclusive*/ std::false_type,
+    /*is_vector=*/std::false_type) noexcept {
+  for (; __first != __last; ++__first, ++__result) {
 }
 
 // Inclusive form
 template <class _RandomAccessIterator, class _OutputIterator, class _UnaryOperation, class _Tp, class _BinaryOperation>
-std::pair<_OutputIterator, _Tp>
-__brick_transform_scan(_RandomAccessIterator __first, _RandomAccessIterator __last, _OutputIterator __result,
-                       _UnaryOperation __unary_op, _Tp __init, _BinaryOperation __binary_op,
-                       /*Inclusive*/ std::true_type, /*is_vector=*/std::false_type) noexcept
-{
-    for (; __first != __last; ++__first, ++__result)
-    {
-        _PSTL_PRAGMA_FORCEINLINE
-        __init = __binary_op(__init, __unary_op(*__first));
-        *__result = __init;
-    }
-    return std::make_pair(__result, __init);
+std::pair<_OutputIterator, _Tp> __brick_transform_scan(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _OutputIterator __result,
+    _UnaryOperation __unary_op,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    /*Inclusive*/ std::true_type,
+    /*is_vector=*/std::false_type) noexcept {
+  for (; __first != __last; ++__first, ++__result) {
+    __init    = __binary_op(__init, __unary_op(*__first));
 }
 
 // type is arithmetic and binary operation is a user defined operation.
 template <typename _Tp, typename _BinaryOperation>
-using is_arithmetic_udop = std::integral_constant<bool, std::is_arithmetic<_Tp>::value &&
-                                                            !std::is_same<_BinaryOperation, std::plus<_Tp>>::value>;
+using is_arithmetic_udop =
+    std::integral_constant<bool,
+                           std::is_arithmetic<_Tp>::value && !std::is_same<_BinaryOperation, std::plus<_Tp>>::value>;
 
 // [restriction] - T shall be DefaultConstructible.
 // [violation] - default ctor of T shall set the identity value for binary_op.
-template <class _RandomAccessIterator, class _OutputIterator, class _UnaryOperation, class _Tp, class _BinaryOperation,
+template <class _RandomAccessIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
           class _Inclusive>
 typename std::enable_if<!is_arithmetic_udop<_Tp, _BinaryOperation>::value, std::pair<_OutputIterator, _Tp>>::type
-__brick_transform_scan(_RandomAccessIterator __first, _RandomAccessIterator __last, _OutputIterator __result,
-                       _UnaryOperation __unary_op, _Tp __init, _BinaryOperation __binary_op, _Inclusive,
-                       /*is_vector=*/std::true_type) noexcept
-{
+__brick_transform_scan(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _OutputIterator __result,
+    _UnaryOperation __unary_op,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _Inclusive,
+    /*is_vector=*/std::true_type) noexcept {
 #if defined(_PSTL_UDS_PRESENT)
-    return __unseq_backend::__simd_scan(__first, __last - __first, __result, __unary_op, __init, __binary_op,
-                                        _Inclusive());
+  return __unseq_backend::__simd_scan(
+      __first, __last - __first, __result, __unary_op, __init, __binary_op, _Inclusive());
 #else
-    // We need to call serial brick here to call function for inclusive and exclusive scan that depends on _Inclusive() value
-    return __internal::__brick_transform_scan(__first, __last, __result, __unary_op, __init, __binary_op, _Inclusive(),
-                                              /*is_vector=*/std::false_type());
+  // We need to call serial brick here to call function for inclusive and exclusive scan that depends on _Inclusive()
+  // value
+  return __internal::__brick_transform_scan(
+      __first,
+      __last,
+      __result,
+      __unary_op,
+      __init,
+      __binary_op,
+      _Inclusive(),
 #endif
 }
 
-template <class _RandomAccessIterator, class _OutputIterator, class _UnaryOperation, class _Tp, class _BinaryOperation,
+template <class _RandomAccessIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
           class _Inclusive>
 typename std::enable_if<is_arithmetic_udop<_Tp, _BinaryOperation>::value, std::pair<_OutputIterator, _Tp>>::type
-__brick_transform_scan(_RandomAccessIterator __first, _RandomAccessIterator __last, _OutputIterator __result,
-                       _UnaryOperation __unary_op, _Tp __init, _BinaryOperation __binary_op, _Inclusive,
-                       /*is_vector=*/std::true_type) noexcept
-{
-    return __internal::__brick_transform_scan(__first, __last, __result, __unary_op, __init, __binary_op, _Inclusive(),
-                                              /*is_vector=*/std::false_type());
+__brick_transform_scan(
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _OutputIterator __result,
+    _UnaryOperation __unary_op,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _Inclusive,
+    /*is_vector=*/std::true_type) noexcept {
+  return __internal::__brick_transform_scan(
+      __first,
+      __last,
+      __result,
+      __unary_op,
+      __init,
+      __binary_op,
+      _Inclusive(),
 }
 
-template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _UnaryOperation,
-          class _Tp, class _BinaryOperation, class _Inclusive>
-_OutputIterator
-__pattern_transform_scan(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                         _OutputIterator __result, _UnaryOperation __unary_op, _Tp __init, _BinaryOperation __binary_op,
-                         _Inclusive) noexcept
-{
-    return __internal::__brick_transform_scan(__first, __last, __result, __unary_op, __init, __binary_op, _Inclusive(),
-                                              typename _Tag::__is_vector{})
-        .first;
+template <class _Tag,
+          class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
+          class _Inclusive>
+_OutputIterator __pattern_transform_scan(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __result,
+    _UnaryOperation __unary_op,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _Inclusive) noexcept {
+  return __internal::__brick_transform_scan(
+             __first, __last, __result, __unary_op, __init, __binary_op, _Inclusive(), typename _Tag::__is_vector{})
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator,
-          class _UnaryOperation, class _Tp, class _BinaryOperation, class _Inclusive>
-typename std::enable_if<!std::is_floating_point<_Tp>::value, _OutputIterator>::type
-__pattern_transform_scan(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                         _RandomAccessIterator __last, _OutputIterator __result, _UnaryOperation __unary_op, _Tp __init,
-                         _BinaryOperation __binary_op, _Inclusive)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
+          class _Inclusive>
+typename std::enable_if<!std::is_floating_point<_Tp>::value, _OutputIterator>::type __pattern_transform_scan(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _OutputIterator __result,
+    _UnaryOperation __unary_op,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _Inclusive) {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type _DifferenceType;
 
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_transform_scan(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __last - __first,
-                [__first, __unary_op](_DifferenceType __i) mutable { return __unary_op(__first[__i]); }, __init,
-                __binary_op,
-                [__first, __unary_op, __binary_op](_DifferenceType __i, _DifferenceType __j, _Tp __init)
-                {
-                    // Execute serial __brick_transform_reduce, due to the explicit SIMD vectorization (reduction) requires a commutative operation for the guarantee of correct scan.
-                    return __internal::__brick_transform_reduce(__first + __i, __first + __j, __init, __binary_op,
-                                                                __unary_op,
-                                                                /*__is_vector*/ std::false_type());
-                },
-                [__first, __unary_op, __binary_op, __result](_DifferenceType __i, _DifferenceType __j, _Tp __init)
-                {
-                    return __internal::__brick_transform_scan(__first + __i, __first + __j, __result + __i, __unary_op,
-                                                              __init, __binary_op, _Inclusive(), _IsVector{})
-                        .second;
-                });
-            return __result + (__last - __first);
-        });
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __last - __first,
+        [__first, __unary_op](_DifferenceType __i) mutable { return __unary_op(__first[__i]); },
+        __init,
+        __binary_op,
+        [__first, __unary_op, __binary_op](_DifferenceType __i, _DifferenceType __j, _Tp __init) {
+          // Execute serial __brick_transform_reduce, due to the explicit SIMD vectorization (reduction) requires a
+          // commutative operation for the guarantee of correct scan.
+          return __internal::__brick_transform_reduce(
+              __first + __i,
+              __first + __j,
+              __init,
+        [__first, __unary_op, __binary_op, __result](_DifferenceType __i, _DifferenceType __j, _Tp __init) {
+          return __internal::__brick_transform_scan(
+                     __first + __i,
+                     __first + __j,
+                     __result + __i,
+                     __unary_op,
+                     __init,
+                     __binary_op,
+                     _Inclusive(),
+                     _IsVector{})
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator, class _OutputIterator,
-          class _UnaryOperation, class _Tp, class _BinaryOperation, class _Inclusive>
-typename std::enable_if<std::is_floating_point<_Tp>::value, _OutputIterator>::type
-__pattern_transform_scan(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec, _RandomAccessIterator __first,
-                         _RandomAccessIterator __last, _OutputIterator __result, _UnaryOperation __unary_op, _Tp __init,
-                         _BinaryOperation __binary_op, _Inclusive)
-{
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator,
+          class _OutputIterator,
+          class _UnaryOperation,
+          class _Tp,
+          class _BinaryOperation,
+          class _Inclusive>
+typename std::enable_if<std::is_floating_point<_Tp>::value, _OutputIterator>::type __pattern_transform_scan(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator __first,
+    _RandomAccessIterator __last,
+    _OutputIterator __result,
+    _UnaryOperation __unary_op,
+    _Tp __init,
+    _BinaryOperation __binary_op,
+    _Inclusive) {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator>::difference_type _DifferenceType;
-    _DifferenceType __n = __last - __first;
 
-    if (__n <= 0)
-    {
-        return __result;
-    }
-    return __internal::__except_handler(
-        [&]()
-        {
-            __par_backend::__parallel_strict_scan(
-                __backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __n, __init,
-                [__first, __unary_op, __binary_op, __result](_DifferenceType __i, _DifferenceType __len)
-                {
-                    return __internal::__brick_transform_scan(__first + __i, __first + (__i + __len), __result + __i,
-                                                              __unary_op, _Tp{}, __binary_op, _Inclusive(), _IsVector{})
-                        .second;
-                },
-                __binary_op,
-                [__result, &__binary_op](_DifferenceType __i, _DifferenceType __len, _Tp __initial)
-                {
-                    return *(std::transform(__result + __i, __result + __i + __len, __result + __i,
-                                            [&__initial, &__binary_op](const _Tp& __x)
-                                            {
-                                                _PSTL_PRAGMA_FORCEINLINE
-                                                return __binary_op(__initial, __x);
-                                            }) -
-                             1);
-                },
-                [](_Tp) {});
-            return __result + (__last - __first);
-        });
+  if (__n <= 0) {
+  return __internal::__except_handler([&]() {
+        __backend_tag{},
+        std::forward<_ExecutionPolicy>(__exec),
+        __n,
+        __init,
+        [__first, __unary_op, __binary_op, __result](_DifferenceType __i, _DifferenceType __len) {
+          return __internal::__brick_transform_scan(
+                     __first + __i,
+                     __first + (__i + __len),
+                     __result + __i,
+                     __unary_op,
+                     _Tp{},
+                     __binary_op,
+                     _Inclusive(),
+                     _IsVector{})
+        [__result, &__binary_op](_DifferenceType __i, _DifferenceType __len, _Tp __initial) {
+          return *(std::transform(__result + __i,
+                                  __result + __i + __len,
+                                  __result + __i,
+                                  [&__initial, &__binary_op](const _Tp& __x) {
 }
 
 //------------------------------------------------------------------------
 // adjacent_difference
 //------------------------------------------------------------------------
 
 template <class _ForwardIterator, class _OutputIterator, class _BinaryOperation>
-_OutputIterator
-__brick_adjacent_difference(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __d_first,
-                            _BinaryOperation __op, /*is_vector*/ std::false_type) noexcept
-{
-    return std::adjacent_difference(__first, __last, __d_first, __op);
+_OutputIterator __brick_adjacent_difference(
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __d_first,
+    _BinaryOperation __op,
+    /*is_vector*/ std::false_type) noexcept {
 }
 
 template <class _RandomAccessIterator1, class _RandomAccessIterator2, class BinaryOperation>
-_RandomAccessIterator2
-__brick_adjacent_difference(_RandomAccessIterator1 __first, _RandomAccessIterator1 __last,
-                            _RandomAccessIterator2 __d_first, BinaryOperation __op,
-                            /*is_vector=*/std::true_type) noexcept
-{
-    _PSTL_ASSERT(__first != __last);
+_RandomAccessIterator2 __brick_adjacent_difference(
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __d_first,
+    BinaryOperation __op,
+    /*is_vector=*/std::true_type) noexcept {
 
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::reference _ReferenceType1;
-    typedef typename std::iterator_traits<_RandomAccessIterator2>::reference _ReferenceType2;
 
-    auto __n = __last - __first;
-    *__d_first = *__first;
-    return __unseq_backend::__simd_walk_3(
-        __first + 1, __n - 1, __first, __d_first + 1,
-        [&__op](_ReferenceType1 __x, _ReferenceType1 __y, _ReferenceType2 __z) { __z = __op(__x, __y); });
+  auto __n   = __last - __first;
+      __first + 1,
+      __n - 1,
+      __first,
+      __d_first + 1,
 }
 
 template <class _Tag, class _ExecutionPolicy, class _ForwardIterator, class _OutputIterator, class _BinaryOperation>
-_OutputIterator
-__pattern_adjacent_difference(_Tag, _ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last,
-                              _OutputIterator __d_first, _BinaryOperation __op) noexcept
-{
-    return __internal::__brick_adjacent_difference(__first, __last, __d_first, __op, typename _Tag::__is_vector{});
+_OutputIterator __pattern_adjacent_difference(
+    _Tag,
+    _ExecutionPolicy&&,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _OutputIterator __d_first,
+    _BinaryOperation __op) noexcept {
 }
 
-template <class _IsVector, class _ExecutionPolicy, class _RandomAccessIterator1, class _RandomAccessIterator2,
+template <class _IsVector,
+          class _ExecutionPolicy,
+          class _RandomAccessIterator1,
+          class _RandomAccessIterator2,
           class _BinaryOperation>
-_RandomAccessIterator2
-__pattern_adjacent_difference(__parallel_tag<_IsVector> __tag, _ExecutionPolicy&& __exec,
-                              _RandomAccessIterator1 __first, _RandomAccessIterator1 __last,
-                              _RandomAccessIterator2 __d_first, _BinaryOperation __op)
-{
-    _PSTL_ASSERT(__first != __last);
-    typedef typename std::iterator_traits<_RandomAccessIterator1>::reference _ReferenceType1;
-    typedef typename std::iterator_traits<_RandomAccessIterator2>::reference _ReferenceType2;
+_RandomAccessIterator2 __pattern_adjacent_difference(
+    __parallel_tag<_IsVector> __tag,
+    _ExecutionPolicy&& __exec,
+    _RandomAccessIterator1 __first,
+    _RandomAccessIterator1 __last,
+    _RandomAccessIterator2 __d_first,
+    _BinaryOperation __op) {
 
-    using __backend_tag = typename decltype(__tag)::__backend_tag;
 
-    *__d_first = *__first;
-    __par_backend::__parallel_for(__backend_tag{}, std::forward<_ExecutionPolicy>(__exec), __first, __last - 1,
-                                  [&__op, __d_first, __first](_RandomAccessIterator1 __b, _RandomAccessIterator1 __e)
-                                  {
-                                      _RandomAccessIterator2 __d_b = __d_first + (__b - __first);
-                                      __internal::__brick_walk3(
-                                          __b, __e, __b + 1, __d_b + 1,
-                                          [&__op](_ReferenceType1 __x, _ReferenceType1 __y, _ReferenceType2 __z)
-                                          { __z = __op(__y, __x); },
-                                          _IsVector{});
-                                  });
-    return __d_first + (__last - __first);
+  __par_backend::__parallel_for(
+      __backend_tag{},
+      std::forward<_ExecutionPolicy>(__exec),
+      __first,
+      __last - 1,
+      [&__op, __d_first, __first](_RandomAccessIterator1 __b, _RandomAccessIterator1 __e) {
+            __b,
+            __e,
+            __b + 1,
+            __d_b + 1,
+            [&__op](_ReferenceType1 __x, _ReferenceType1 __y, _ReferenceType2 __z) { __z = __op(__y, __x); },
 }
 
 } // namespace __internal
 } // namespace __pstl
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_NUMERIC_IMPL_H */

libcxx/include/pstl/internal/utils.h

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _PSTL_UTILS_H
 #define _PSTL_UTILS_H
 
-#include <new>
 #include <iterator>
+#include <new>
 #include <utility>
 
 _PSTL_HIDE_FROM_ABI_PUSH
 
-namespace __pstl
-{
-namespace __internal
-{
+namespace __pstl {
+namespace __internal {
 
 template <typename _Fp>
-auto
-__except_handler(_Fp __f) -> decltype(__f())
-{
+auto __except_handler(_Fp __f) -> decltype(__f()) {
 #ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-    try
-    {
+  try {
 #endif // _LIBCPP_HAS_NO_EXCEPTIONS
-        return __f();
 #ifndef _LIBCPP_HAS_NO_EXCEPTIONS
-    }
-    catch (const std::bad_alloc&)
-    {
-        throw; // re-throw bad_alloc according to the standard [algorithms.parallel.exceptions]
-    }
-    catch (...)
-    {
-        std::terminate(); // Good bye according to the standard [algorithms.parallel.exceptions]
-    }
+  } catch (const std::bad_alloc&) {
+    throw;            // re-throw bad_alloc according to the standard [algorithms.parallel.exceptions]
+  } catch (...) {
 #endif // _LIBCPP_HAS_NO_EXCEPTIONS
 }
 
 template <typename _Fp>
-void
-__invoke_if(std::true_type, _Fp __f)
-{
-    __f();
+void __invoke_if(std::true_type, _Fp __f) {
 }
 
 template <typename _Fp>
-void __invoke_if(std::false_type, _Fp)
-{
-}
+void __invoke_if(std::false_type, _Fp) {}
 
 template <typename _Fp>
-void
-__invoke_if_not(std::false_type, _Fp __f)
-{
-    __f();
+void __invoke_if_not(std::false_type, _Fp __f) {
 }
 
 template <typename _Fp>
-void __invoke_if_not(std::true_type, _Fp)
-{
-}
+void __invoke_if_not(std::true_type, _Fp) {}
 
 template <typename _F1, typename _F2>
-auto
-__invoke_if_else(std::true_type, _F1 __f1, _F2) -> decltype(__f1())
-{
-    return __f1();
+auto __invoke_if_else(std::true_type, _F1 __f1, _F2) -> decltype(__f1()) {
 }
 
 template <typename _F1, typename _F2>
-auto
-__invoke_if_else(std::false_type, _F1, _F2 __f2) -> decltype(__f2())
-{
-    return __f2();
+auto __invoke_if_else(std::false_type, _F1, _F2 __f2) -> decltype(__f2()) {
 }
 
 //! Unary operator that returns reference to its argument.
-struct __no_op
-{
-    template <typename _Tp>
-    _Tp&&
-    operator()(_Tp&& __a) const
-    {
-        return std::forward<_Tp>(__a);
-    }
+struct __no_op {
+  _Tp&& operator()(_Tp&& __a) const {
 };
 
 template <typename _Pred>
-class __reorder_pred
-{
-    _Pred _M_pred;
+class __reorder_pred {
 
-  public:
-    explicit __reorder_pred(_Pred __pred) : _M_pred(__pred) {}
 
-    template <typename _FTp, typename _STp>
-    bool
-    operator()(_FTp&& __a, _STp&& __b)
-    {
-        return _M_pred(std::forward<_STp>(__b), std::forward<_FTp>(__a));
-    }
+  bool operator()(_FTp&& __a, _STp&& __b) {
 };
 
 //! Like a polymorphic lambda for pred(...,value)
 template <typename _Tp, typename _Predicate>
-class __equal_value_by_pred
-{
-    const _Tp& _M_value;
-    _Predicate _M_pred;
+class __equal_value_by_pred {
 
-  public:
-    __equal_value_by_pred(const _Tp& __value, _Predicate __pred) : _M_value(__value), _M_pred(__pred) {}
 
-    template <typename _Arg>
-    bool
-    operator()(_Arg&& __arg)
-    {
-        return _M_pred(std::forward<_Arg>(__arg), _M_value);
-    }
+  bool operator()(_Arg&& __arg) {
 };
 
 //! Like a polymorphic lambda for ==value
 template <typename _Tp>
-class __equal_value
-{
-    const _Tp& _M_value;
+class __equal_value {
 
-  public:
-    explicit __equal_value(const _Tp& __value) : _M_value(__value) {}
 
-    template <typename _Arg>
-    bool
-    operator()(_Arg&& __arg) const
-    {
-        return std::forward<_Arg>(__arg) == _M_value;
-    }
+  bool operator()(_Arg&& __arg) const {
 };
 
 //! Logical negation of ==value
 template <typename _Tp>
-class __not_equal_value
-{
-    const _Tp& _M_value;
+class __not_equal_value {
 
-  public:
-    explicit __not_equal_value(const _Tp& __value) : _M_value(__value) {}
 
-    template <typename _Arg>
-    bool
-    operator()(_Arg&& __arg) const
-    {
-        return !(std::forward<_Arg>(__arg) == _M_value);
-    }
+  bool operator()(_Arg&& __arg) const {
 };
 
 template <typename _ForwardIterator, typename _Compare>
-_ForwardIterator
-__cmp_iterators_by_values(_ForwardIterator __a, _ForwardIterator __b, _Compare __comp)
-{
-    if (__a < __b)
-    { // we should return closer iterator
-        return __comp(*__b, *__a) ? __b : __a;
-    }
-    else
-    {
-        return __comp(*__a, *__b) ? __a : __b;
-    }
+_ForwardIterator __cmp_iterators_by_values(_ForwardIterator __a, _ForwardIterator __b, _Compare __comp) {
+  if (__a < __b) { // we should return closer iterator
+  } else {
 }
 
 } // namespace __internal
 } // namespace __pstl
 
 _PSTL_HIDE_FROM_ABI_POP
 
 #endif /* _PSTL_UTILS_H */

libcxx/utils/data/ignore_format.txt

 libcxx/include/__numeric/midpoint.h
 libcxx/include/__numeric/partial_sum.h
 libcxx/include/__numeric/reduce.h
 libcxx/include/__numeric/transform_exclusive_scan.h
 libcxx/include/__numeric/transform_inclusive_scan.h
 libcxx/include/__numeric/transform_reduce.h
 libcxx/include/optional
 libcxx/include/ostream
-libcxx/include/pstl/internal/algorithm_fwd.h
-libcxx/include/pstl/internal/algorithm_impl.h
-libcxx/include/pstl/internal/execution_defs.h
-libcxx/include/pstl/internal/execution_impl.h
-libcxx/include/pstl/internal/glue_algorithm_defs.h
-libcxx/include/pstl/internal/glue_algorithm_impl.h
-libcxx/include/pstl/internal/glue_execution_defs.h
-libcxx/include/pstl/internal/glue_memory_defs.h
-libcxx/include/pstl/internal/glue_memory_impl.h
-libcxx/include/pstl/internal/glue_numeric_defs.h
-libcxx/include/pstl/internal/glue_numeric_impl.h
-libcxx/include/pstl/internal/memory_impl.h
-libcxx/include/pstl/internal/numeric_fwd.h
 libcxx/include/pstl/internal/numeric_impl.h
 libcxx/include/pstl/internal/omp/parallel_for_each.h
 libcxx/include/pstl/internal/omp/parallel_for.h
 libcxx/include/pstl/internal/omp/parallel_invoke.h
 libcxx/include/pstl/internal/omp/parallel_merge.h
 libcxx/include/pstl/internal/omp/parallel_reduce.h
 libcxx/include/pstl/internal/omp/parallel_scan.h
 libcxx/include/pstl/internal/omp/parallel_stable_partial_sort.h