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Differential D103583

[libcxx][gardening] Move all algorithms into their own headers.
ClosedPublic

Authored by ldionne on Jun 2 2021, 6:18 PM.

Details

Reviewers
cjdb
• Quuxplusone
EricWF
jdoerfert
zoecarver
phosek
Group Reviewers
Restricted Project
Commits
rG134723edd5bf: [libcxx] Move all algorithms into their own headers
rG7ed7d4ccb899: [libcxx][gardening] Move all algorithms into their own headers.
Summary

This is a fairly mechanical change, it just moves each algorithm into its own header. This is a NFC.

Note: during this change, I burned down all the includes, so this follows "include only and exactly what you use."

There may be some module work that needs to happen here. Let's see what the CI thinks.

Diff Detail

Event Timeline

zoecarver created this revision.Jun 2 2021, 6:18 PM
Herald added subscribers: wenlei, mgrang, mgorny. · View Herald TranscriptJun 2 2021, 6:18 PM
zoecarver requested review of this revision.Jun 2 2021, 6:18 PM
Herald added a reviewer: jdoerfert. · View Herald TranscriptJun 2 2021, 6:18 PM
Herald added a project: Restricted Project. · View Herald Transcript
Herald added a reviewer: Restricted Project. · View Herald Transcript
Herald added subscribers: libcxx-commits, sstefan1. · View Herald Transcript
zoecarver added a comment.Jun 2 2021, 6:22 PM

Note: this change includes D103330. I just subsumed that patch because I need to use some things form it and update it a bit. I think it's easiest to just take this one rather than trying to deal with merge conflicts and updates to that one.

zoecarver updated this revision to Diff 349440.Jun 2 2021, 6:22 PM

Remove two unrelated files.

cjdb added inline comments.Jun 2 2021, 8:25 PM
libcxx/include/module.modulemap
220–223

You'll need to replicate what I do in D103551 for every algorithm header.

409–410
451–454

Delete.

554–557

Delete.

• Quuxplusone added a comment.Jun 2 2021, 8:49 PM

Not a blocker, but just for curiosity's sake, could you run graph_header_deps.py before and after this patch and upload the images somewhere?
libcxx/utils/graph_header_deps.py | dot -Tpng > coolgraph.png
We expect the graph to get vastly more dotty-and-liney, but maybe less bottlenecky? It'd be interesting to look at, anyway.

Harbormaster completed remote builds in B107371: Diff 349440.Jun 2 2021, 11:24 PM
ldionne accepted this revision.Jun 3 2021, 7:30 AM

This LGTM, however I want to understand the recent Modules failures better before checking this in, to make sure we don't have to revert it. It has the potential to be fairly disruptive (in terms of downstream merge conflicts for people with forks and stuff like that). I just want to make sure that we get it right the first time around, so please hold on with committing until we've made sure of that.

This revision is now accepted and ready to land.Jun 3 2021, 7:30 AM
cjdb added a parent revision: D103551: [libcxx][module-map] creates submodules for private headers.Jun 3 2021, 8:56 AM
cjdb requested changes to this revision.Jun 3 2021, 10:19 AM

Note: during this change, I burned down all the includes, so this follows "include only and exactly what you use."

In D103330 @ldionne asked that this be done in a separate patch.

This revision now requires changes to proceed.Jun 3 2021, 10:19 AM
• Quuxplusone added inline comments.Jun 3 2021, 10:41 AM
libcxx/include/algorithm
648–665

(A) Why are these few headers alphabetized and then the bulk of them (below) done... below?

(B) @cjdb wrote:

Note: during this change, I burned down all the includes, so this follows "include only and exactly what you use."

In D103330 @ldionne asked that this be done in a separate patch.

The important thing @ldionne was getting at in D103330 is Hyrum's Law. We need to make sure that we don't break any of libc++'s customers who might be relying on the fact e.g. "by including <algorithm>, I also receive all of <functional>." @zoecarver's change doesn't actually affect those customers AFAICT, because he's leaving the existing includes alone here (e.g. <algorithm> does still include <functional>).

However, @zoecarver, please do triple-check this PR to make sure that the top-level <algorithm> header still includes all the facilities it used to, and that the same is true for all other top-level publicly visible headers (e.g. <functional>, <iterator>, anything else that might have changed).

zoecarver updated this revision to Diff 349609.Jun 3 2021, 10:55 AM
  • Modularize
Harbormaster completed remote builds in B107496: Diff 349609.Jun 3 2021, 10:56 AM
zoecarver added inline comments.Jun 3 2021, 10:58 AM
libcxx/include/algorithm
648–665

(A) Why are these few headers alphabetized and then the bulk of them (below) done... below?

Arg. Sorry this came out of merging Chris' patch with mine. Will fix. (Come to think of it, I also need to update the cmake list.)

The important thing @ldionne was getting at in D103330 is Hyrum's Law. We need to make sure that we don't break any of libc++'s customers who might be relying on the fact e.g. "by including <algorithm>, I also receive all of <functional>." @zoecarver's change doesn't actually affect those customers AFAICT, because he's leaving the existing includes alone here (e.g. <algorithm> does still include <functional>).

However, @zoecarver, please do triple-check this PR to make sure that the top-level <algorithm> header still includes all the facilities it used to, and that the same is true for all other top-level publicly visible headers (e.g. <functional>, <iterator>, anything else that might have changed).

Yes. I haven't removed anything from <algorithm>.

zoecarver updated this revision to Diff 349613.Jun 3 2021, 11:13 AM
  • Re-alphabatize and add a few missing modules to the module map
  • __search.h -> search.h
Harbormaster completed remote builds in B107498: Diff 349613.Jun 3 2021, 11:14 AM
zoecarver updated this revision to Diff 349614.Jun 3 2021, 11:14 AM
  • Remove two unrealted files
Harbormaster completed remote builds in B107499: Diff 349614.Jun 3 2021, 11:14 AM
cjdb accepted this revision.Jun 3 2021, 11:23 AM

LGTM pending my requested deletions.

libcxx/include/module.modulemap
292–294

Delete

This revision is now accepted and ready to land.Jun 3 2021, 11:23 AM
zoecarver updated this revision to Diff 349622.Jun 3 2021, 11:30 AM

Rebase.

Harbormaster completed remote builds in B107503: Diff 349622.Jun 3 2021, 11:37 AM
zoecarver updated this revision to Diff 349628.Jun 3 2021, 11:49 AM

Add back half_positive.h which got removed on accident (and I didn't catch it because cmake cached it in the build directoyr).

Harbormaster completed remote builds in B107507: Diff 349628.Jun 3 2021, 12:08 PM
zoecarver updated this revision to Diff 349662.Jun 3 2021, 12:54 PM

Fix another include issue that I didn't catch thanks to ninja caching.

• Quuxplusone added a comment.Jun 3 2021, 1:57 PM

Double-check your module.modulemap changes: I still see at least one export * in there.
Also some removed blank lines that may or may not have been on purpose. Just make sure the style we end up with is consistent across all the sections of module.modulemap.
Otherwise, sure, LGTM (modulo my usual curmudgeoning that all these little headers are gonna be icky).

Also: I assume it's intentional that you went with half_positive.h instead of __half_positive.h, and so on? (I.e., some of these files define standard algorithms and some define helpers, with no clear naming distinction between the two kinds.)

cjdb added a comment.Jun 3 2021, 2:37 PM
In D103583#2797366, @Quuxplusone wrote:

Also: I assume it's intentional that you went with half_positive.h instead of __half_positive.h, and so on? (I.e., some of these files define standard algorithms and some define helpers, with no clear naming distinction between the two kinds.)

Agreed that we should probably get a convention going. We can do that offline, but I've been following whatever is the salient feature of the file. If it's __half_positive, then I'd make the header __half_positive.h.

libcxx/include/module.modulemap
295

This export * still needs to go.

Harbormaster completed remote builds in B107539: Diff 349662.Jun 3 2021, 3:33 PM
Closed by commit rG7ed7d4ccb899: [libcxx][gardening] Move all algorithms into their own headers. (authored by zoecarver). · Explain WhyJun 4 2021, 9:37 AM
This revision was automatically updated to reflect the committed changes.
zoecarver added a commit: rG7ed7d4ccb899: [libcxx][gardening] Move all algorithms into their own headers..
phosek added a reverting change: rG692d7166f771: Revert "[libcxx][gardening] Move all algorithms into their own headers.".Jun 7 2021, 5:16 PM
ldionne reopened this revision.Jun 17 2021, 8:49 AM
This revision is now accepted and ready to land.Jun 17 2021, 8:49 AM
ldionne commandeered this revision.Jun 17 2021, 9:15 AM
ldionne edited reviewers, added: zoecarver; removed: ldionne.

Commandeering as I'm getting ready to re-apply this change (well, really D104171 which is a mix of D103330, this and additional work).

ldionne updated this revision to Diff 352752.Jun 17 2021, 9:16 AM

Update to https://reviews.llvm.org/D104171.

ldionne added a reviewer: phosek.Jun 17 2021, 9:18 AM
ldionne added a subscriber: phosek.

@phosek Could you please apply this change locally and run whatever you ran that caused you to revert last week? I think we should have fixed our stuff, but I really want to make sure we're not going to break you again, because it's extremely painful for us to revert and re-apply such a large change (and it messes up the history pretty badly, too).

This revision now requires review to proceed.Jun 17 2021, 9:18 AM
Harbormaster completed remote builds in B109737: Diff 352752.Jun 17 2021, 7:21 PM
phosek accepted this revision.Jun 18 2021, 7:16 PM

LGTM

This revision is now accepted and ready to land.Jun 18 2021, 7:16 PM
Closed by commit rG134723edd5bf: [libcxx] Move all algorithms into their own headers (authored by ldionne). · Explain WhyJun 19 2021, 4:49 AM
This revision was automatically updated to reflect the committed changes.
ldionne added a commit: rG134723edd5bf: [libcxx] Move all algorithms into their own headers.

Revision Contents

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__functional/
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__memory/
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__random/
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experimental/
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test/
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algorithms/
alg.modifying.operations/
alg.random.sample/
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alg.sorting/
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containers/
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Diff 353188

libcxx/include/CMakeLists.txt

set(files set(files
__algorithm/adjacent_find.h
__algorithm/all_of.h
__algorithm/any_of.h
__algorithm/binary_search.h
__algorithm/clamp.h
__algorithm/comp.h
__algorithm/comp_ref_type.h
__algorithm/copy_backward.h
__algorithm/copy.h
__algorithm/copy_if.h
__algorithm/copy_n.h
__algorithm/count.h
__algorithm/count_if.h
__algorithm/equal.h
__algorithm/equal_range.h
__algorithm/fill_n.h
__algorithm/fill.h
__algorithm/find.h
__algorithm/find_end.h
__algorithm/find_first_of.h
__algorithm/find_if.h
__algorithm/find_if_not.h
__algorithm/for_each.h
__algorithm/for_each_n.h
__algorithm/generate_n.h
__algorithm/generate.h
__algorithm/half_positive.h
__algorithm/includes.h
__algorithm/inplace_merge.h
__algorithm/is_heap.h
__algorithm/is_heap_until.h
__algorithm/is_partitioned.h
__algorithm/is_permutation.h
__algorithm/is_sorted.h
__algorithm/is_sorted_until.h
__algorithm/lexicographical_compare.h
__algorithm/lower_bound.h
__algorithm/make_heap.h
__algorithm/max.h
__algorithm/max_element.h
__algorithm/merge.h
__algorithm/min.h
__algorithm/min_element.h
__algorithm/minmax.h
__algorithm/minmax_element.h
__algorithm/mismatch.h
__algorithm/move_backward.h
__algorithm/move.h
__algorithm/next_permutation.h
__algorithm/none_of.h
__algorithm/nth_element.h
__algorithm/partial_sort.h
__algorithm/partial_sort_copy.h
__algorithm/partition.h
__algorithm/partition_copy.h
__algorithm/partition_point.h
__algorithm/pop_heap.h
__algorithm/prev_permutation.h
__algorithm/push_heap.h
__algorithm/remove.h
__algorithm/remove_copy.h
__algorithm/remove_copy_if.h
__algorithm/remove_if.h
__algorithm/replace.h
__algorithm/replace_copy.h
__algorithm/replace_copy_if.h
__algorithm/replace_if.h
__algorithm/reverse.h
__algorithm/reverse_copy.h
__algorithm/rotate.h
__algorithm/rotate_copy.h
__algorithm/sample.h
__algorithm/search.h
__algorithm/search_n.h
__algorithm/set_difference.h
__algorithm/set_intersection.h
__algorithm/set_symmetric_difference.h
__algorithm/set_union.h
__algorithm/shift_left.h
__algorithm/shift_right.h
__algorithm/shuffle.h
__algorithm/sift_down.h
__algorithm/sort.h
__algorithm/sort_heap.h
__algorithm/stable_partition.h
__algorithm/stable_sort.h
__algorithm/transform.h
__algorithm/unique_copy.h
__algorithm/unique.h
__algorithm/unwrap_iter.h
__algorithm/upper_bound.h
__availability __availability
__bit_reference __bit_reference
__bits __bits
__bsd_locale_defaults.h __bsd_locale_defaults.h
__bsd_locale_fallbacks.h __bsd_locale_fallbacks.h
__config __config
__debug __debug
__errc __errc
__format/format_error.h __format/format_error.h
__format/format_parse_context.h __format/format_parse_context.h
__function_like.h __function_like.h
__functional/search.h
__functional_03 __functional_03
__functional_base __functional_base
__functional_base_03 __functional_base_03
__hash_table __hash_table
__iterator/advance.h __iterator/advance.h
__iterator/concepts.h __iterator/concepts.h
__iterator/default_sentinel.h __iterator/default_sentinel.h
__iterator/incrementable_traits.h __iterator/incrementable_traits.h
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__memory/raw_storage_iterator.h __memory/raw_storage_iterator.h
__memory/shared_ptr.h __memory/shared_ptr.h
__memory/temporary_buffer.h __memory/temporary_buffer.h
__memory/uninitialized_algorithms.h __memory/uninitialized_algorithms.h
__memory/unique_ptr.h __memory/unique_ptr.h
__mutex_base __mutex_base
__node_handle __node_handle
__nullptr __nullptr
__random/uniform_int_distribution.h
__ranges/access.h __ranges/access.h
__ranges/all.h __ranges/all.h
__ranges/concepts.h __ranges/concepts.h
__ranges/data.h __ranges/data.h
__ranges/empty.h __ranges/empty.h
__ranges/empty_view.h __ranges/empty_view.h
__ranges/enable_borrowed_range.h __ranges/enable_borrowed_range.h
__ranges/enable_view.h __ranges/enable_view.h
▲ Show 20 Lines • Show All 229 Lines • Show Last 20 Lines

libcxx/include/__algorithm/adjacent_find.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_ADJACENT_FIND_H
#define _LIBCPP___ALGORITHM_ADJACENT_FIND_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) {
if (__first != __last) {
_ForwardIterator __i = __first;
while (++__i != __last) {
if (__pred(*__first, *__i))
return __first;
__first = __i;
}
}
return __last;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
adjacent_find(_ForwardIterator __first, _ForwardIterator __last) {
typedef typename iterator_traits<_ForwardIterator>::value_type __v;
return _VSTD::adjacent_find(__first, __last, __equal_to<__v>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ADJACENT_FIND_H

libcxx/include/__algorithm/all_of.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_ALL_OF_H
#define _LIBCPP___ALGORITHM_ALL_OF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
all_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (!__pred(*__first))
return false;
return true;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ALL_OF_H

libcxx/include/__algorithm/any_of.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_ANY_OF_H
#define _LIBCPP___ALGORITHM_ANY_OF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
any_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (__pred(*__first))
return true;
return false;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ANY_OF_H

libcxx/include/__algorithm/binary_search.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_BINARY_SEARCH_H
#define _LIBCPP___ALGORITHM_BINARY_SEARCH_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/lower_bound.h>
#include <__algorithm/comp_ref_type.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
__binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
__first = _VSTD::__lower_bound<_Compare>(__first, __last, __value_, __comp);
return __first != __last && !__comp(__value_, *__first);
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__binary_search<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::binary_search(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_BINARY_SEARCH_H

libcxx/include/__algorithm/clamp.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_CLAMP_H
#define _LIBCPP___ALGORITHM_CLAMP_H
#include <__config>
#include <__debug>
#include <__algorithm/comp.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 14
// clamp
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
const _Tp&
clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi, _Compare __comp)
{
_LIBCPP_ASSERT(!__comp(__hi, __lo), "Bad bounds passed to std::clamp");
return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v;
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
const _Tp&
clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi)
{
return _VSTD::clamp(__v, __lo, __hi, __less<_Tp>());
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_CLAMP_H

libcxx/include/__algorithm/comp.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_COMP_H
#define _LIBCPP___ALGORITHM_COMP_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// I'd like to replace these with _VSTD::equal_to<void>, but can't because:
// * That only works with C++14 and later, and
// * We haven't included <functional> here.
template <class _T1, class _T2 = _T1>
struct __equal_to
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T1& __x, const _T2& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T2& __x, const _T1& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T2& __x, const _T2& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<_T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<const _T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<_T1, const _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1, class _T2 = _T1>
struct __less
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T2& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T2& __x, const _T1& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T2& __x, const _T2& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<_T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<const _T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<_T1, const _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COMP_H

libcxx/include/__algorithm/comp_ref_type.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_COMP_REF_TYPE_H
#define _LIBCPP___ALGORITHM_COMP_REF_TYPE_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#ifdef _LIBCPP_DEBUG
template <class _Compare>
struct __debug_less
{
_Compare &__comp_;
_LIBCPP_CONSTEXPR_AFTER_CXX17
__debug_less(_Compare& __c) : __comp_(__c) {}
template <class _Tp, class _Up>
_LIBCPP_CONSTEXPR_AFTER_CXX17
bool operator()(const _Tp& __x, const _Up& __y)
{
bool __r = __comp_(__x, __y);
if (__r)
__do_compare_assert(0, __y, __x);
return __r;
}
template <class _Tp, class _Up>
_LIBCPP_CONSTEXPR_AFTER_CXX17
bool operator()(_Tp& __x, _Up& __y)
{
bool __r = __comp_(__x, __y);
if (__r)
__do_compare_assert(0, __y, __x);
return __r;
}
template <class _LHS, class _RHS>
_LIBCPP_CONSTEXPR_AFTER_CXX17
inline _LIBCPP_INLINE_VISIBILITY
decltype((void)declval<_Compare&>()(
declval<_LHS &>(), declval<_RHS &>()))
__do_compare_assert(int, _LHS & __l, _RHS & __r) {
_LIBCPP_ASSERT(!__comp_(__l, __r),
"Comparator does not induce a strict weak ordering");
}
template <class _LHS, class _RHS>
_LIBCPP_CONSTEXPR_AFTER_CXX17
inline _LIBCPP_INLINE_VISIBILITY
void __do_compare_assert(long, _LHS &, _RHS &) {}
};
#endif // _LIBCPP_DEBUG
template <class _Comp>
struct __comp_ref_type {
// Pass the comparator by lvalue reference. Or in debug mode, using a
// debugging wrapper that stores a reference.
#ifndef _LIBCPP_DEBUG
typedef typename add_lvalue_reference<_Comp>::type type;
#else
typedef __debug_less<_Comp> type;
#endif
};
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COMP_REF_TYPE_H

libcxx/include/__algorithm/copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_COPY_H
#define _LIBCPP___ALGORITHM_COPY_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// copy
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__copy_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
for (; __first != __last; ++__first, (void) ++__result)
*__result = *__first;
return __result;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY
_OutputIterator
__copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
return _VSTD::__copy_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_copy_assignable<_Up>::value,
_Up*
>::type
__copy(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
return __result + __n;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__copy_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__copy(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_H

libcxx/include/__algorithm/copy_backward.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_COPY_BACKWARD_H
#define _LIBCPP___ALGORITHM_COPY_BACKWARD_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__copy_backward_constexpr(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
while (__first != __last)
*--__result = *--__last;
return __result;
}
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY
_OutputIterator
__copy_backward(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
return _VSTD::__copy_backward_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_copy_assignable<_Up>::value,
_Up*
>::type
__copy_backward(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
{
__result -= __n;
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
}
return __result;
}
template <class _BidirectionalIterator1, class _BidirectionalIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_BidirectionalIterator2
copy_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last,
_BidirectionalIterator2 __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__copy_backward_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__copy_backward(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_BACKWARD_H

libcxx/include/__algorithm/copy_if.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_COPY_IF_H
#define _LIBCPP___ALGORITHM_COPY_IF_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _InputIterator, class _OutputIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
copy_if(_InputIterator __first, _InputIterator __last,
_OutputIterator __result, _Predicate __pred)
{
for (; __first != __last; ++__first)
{
if (__pred(*__first))
{
*__result = *__first;
++__result;
}
}
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_IF_H

libcxx/include/__algorithm/copy_n.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_COPY_N_H
#define _LIBCPP___ALGORITHM_COPY_N_H
#include <__config>
#include <__algorithm/copy.h>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _InputIterator, class _Size, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename enable_if
<
__is_cpp17_input_iterator<_InputIterator>::value &&
!__is_cpp17_random_access_iterator<_InputIterator>::value,
_OutputIterator
>::type
copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
if (__n > 0)
{
*__result = *__first;
++__result;
for (--__n; __n > 0; --__n)
{
++__first;
*__result = *__first;
++__result;
}
}
return __result;
}
template<class _InputIterator, class _Size, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename enable_if
<
__is_cpp17_random_access_iterator<_InputIterator>::value,
_OutputIterator
>::type
copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
return _VSTD::copy(__first, __first + __n, __result);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_N_H

libcxx/include/__algorithm/count.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_COUNT_H
#define _LIBCPP___ALGORITHM_COUNT_H
#include <__config>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename iterator_traits<_InputIterator>::difference_type
count(_InputIterator __first, _InputIterator __last, const _Tp& __value_) {
typename iterator_traits<_InputIterator>::difference_type __r(0);
for (; __first != __last; ++__first)
if (*__first == __value_)
++__r;
return __r;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COUNT_H

libcxx/include/__algorithm/count_if.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_COUNT_IF_H
#define _LIBCPP___ALGORITHM_COUNT_IF_H
#include <__config>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename iterator_traits<_InputIterator>::difference_type
count_if(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
typename iterator_traits<_InputIterator>::difference_type __r(0);
for (; __first != __last; ++__first)
if (__pred(*__first))
++__r;
return __r;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COUNT_IF_H

libcxx/include/__algorithm/equal.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_EQUAL_H
#define _LIBCPP___ALGORITHM_EQUAL_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <iterator> // FIXME: replace with <__iterator/distance.h> when it lands
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) {
for (; __first1 != __last1; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
return false;
return true;
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) {
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::equal(__first1, __last1, __first2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 11
template <class _BinaryPredicate, class _InputIterator1, class _InputIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_BinaryPredicate __pred, input_iterator_tag, input_iterator_tag) {
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
return false;
return __first1 == __last1 && __first2 == __last2;
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
_RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag,
random_access_iterator_tag) {
if (_VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2))
return false;
return _VSTD::equal<_RandomAccessIterator1, _RandomAccessIterator2,
typename add_lvalue_reference<_BinaryPredicate>::type>(__first1, __last1, __first2, __pred);
}
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_BinaryPredicate __pred) {
return _VSTD::__equal<typename add_lvalue_reference<_BinaryPredicate>::type>(
__first1, __last1, __first2, __last2, __pred, typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) {
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::__equal(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>(),
typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_EQUAL_H

libcxx/include/__algorithm/equal_range.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_EQUAL_RANGE_H
#define _LIBCPP___ALGORITHM_EQUAL_RANGE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/half_positive.h>
#include <__algorithm/lower_bound.h>
#include <__algorithm/upper_bound.h>
#include <iterator>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _ForwardIterator, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_ForwardIterator, _ForwardIterator>
__equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__comp(*__m, __value_))
{
__first = ++__m;
__len -= __l2 + 1;
}
else if (__comp(__value_, *__m))
{
__last = __m;
__len = __l2;
}
else
{
_ForwardIterator __mp1 = __m;
return pair<_ForwardIterator, _ForwardIterator>
(
_VSTD::__lower_bound<_Compare>(__first, __m, __value_, __comp),
_VSTD::__upper_bound<_Compare>(++__mp1, __last, __value_, __comp)
);
}
}
return pair<_ForwardIterator, _ForwardIterator>(__first, __first);
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_ForwardIterator, _ForwardIterator>
equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__equal_range<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_ForwardIterator, _ForwardIterator>
equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::equal_range(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_EQUAL_RANGE_H

libcxx/include/__algorithm/fill.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_FILL_H
#define _LIBCPP___ALGORITHM_FILL_H
#include <__config>
#include <__algorithm/fill_n.h>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, forward_iterator_tag)
{
for (; __first != __last; ++__first)
*__first = __value_;
}
template <class _RandomAccessIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value_, random_access_iterator_tag)
{
_VSTD::fill_n(__first, __last - __first, __value_);
}
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
_VSTD::__fill(__first, __last, __value_, typename iterator_traits<_ForwardIterator>::iterator_category());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FILL_H

libcxx/include/__algorithm/fill_n.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_FILL_N_H
#define _LIBCPP___ALGORITHM_FILL_N_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _OutputIterator, class _Size, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_)
{
for (; __n > 0; ++__first, (void) --__n)
*__first = __value_;
return __first;
}
template <class _OutputIterator, class _Size, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_)
{
return _VSTD::__fill_n(__first, _VSTD::__convert_to_integral(__n), __value_);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FILL_N_H

libcxx/include/__algorithm/find.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_FIND_H
#define _LIBCPP___ALGORITHM_FIND_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator
find(_InputIterator __first, _InputIterator __last, const _Tp& __value_) {
for (; __first != __last; ++__first)
if (*__first == __value_)
break;
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_H

libcxx/include/__algorithm/find_end.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_FIND_END_OF_H
#define _LIBCPP___ALGORITHM_FIND_END_OF_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1 __find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred, forward_iterator_tag,
forward_iterator_tag) {
// modeled after search algorithm
_ForwardIterator1 __r = __last1; // __last1 is the "default" answer
if (__first2 == __last2)
return __r;
while (true) {
while (true) {
if (__first1 == __last1) // if source exhausted return last correct answer
return __r; // (or __last1 if never found)
if (__pred(*__first1, *__first2))
break;
++__first1;
}
// *__first1 matches *__first2, now match elements after here
_ForwardIterator1 __m1 = __first1;
_ForwardIterator2 __m2 = __first2;
while (true) {
if (++__m2 == __last2) { // Pattern exhaused, record answer and search for another one
__r = __first1;
++__first1;
break;
}
if (++__m1 == __last1) // Source exhausted, return last answer
return __r;
if (!__pred(*__m1, *__m2)) // mismatch, restart with a new __first
{
++__first1;
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _BidirectionalIterator1, class _BidirectionalIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _BidirectionalIterator1 __find_end(
_BidirectionalIterator1 __first1, _BidirectionalIterator1 __last1, _BidirectionalIterator2 __first2,
_BidirectionalIterator2 __last2, _BinaryPredicate __pred, bidirectional_iterator_tag, bidirectional_iterator_tag) {
// modeled after search algorithm (in reverse)
if (__first2 == __last2)
return __last1; // Everything matches an empty sequence
_BidirectionalIterator1 __l1 = __last1;
_BidirectionalIterator2 __l2 = __last2;
--__l2;
while (true) {
// Find last element in sequence 1 that matchs *(__last2-1), with a mininum of loop checks
while (true) {
if (__first1 == __l1) // return __last1 if no element matches *__first2
return __last1;
if (__pred(*--__l1, *__l2))
break;
}
// *__l1 matches *__l2, now match elements before here
_BidirectionalIterator1 __m1 = __l1;
_BidirectionalIterator2 __m2 = __l2;
while (true) {
if (__m2 == __first2) // If pattern exhausted, __m1 is the answer (works for 1 element pattern)
return __m1;
if (__m1 == __first1) // Otherwise if source exhaused, pattern not found
return __last1;
if (!__pred(*--__m1, *--__m2)) // if there is a mismatch, restart with a new __l1
{
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _RandomAccessIterator1 __find_end(
_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
_RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag, random_access_iterator_tag) {
// Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern
typename iterator_traits<_RandomAccessIterator2>::difference_type __len2 = __last2 - __first2;
if (__len2 == 0)
return __last1;
typename iterator_traits<_RandomAccessIterator1>::difference_type __len1 = __last1 - __first1;
if (__len1 < __len2)
return __last1;
const _RandomAccessIterator1 __s = __first1 + (__len2 - 1); // End of pattern match can't go before here
_RandomAccessIterator1 __l1 = __last1;
_RandomAccessIterator2 __l2 = __last2;
--__l2;
while (true) {
while (true) {
if (__s == __l1)
return __last1;
if (__pred(*--__l1, *__l2))
break;
}
_RandomAccessIterator1 __m1 = __l1;
_RandomAccessIterator2 __m2 = __l2;
while (true) {
if (__m2 == __first2)
return __m1;
// no need to check range on __m1 because __s guarantees we have enough source
if (!__pred(*--__m1, *--__m2)) {
break;
}
}
}
}
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred) {
return _VSTD::__find_end<typename add_lvalue_reference<_BinaryPredicate>::type>(
__first1, __last1, __first2, __last2, __pred, typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category());
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::find_end(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_END_OF_H

libcxx/include/__algorithm/find_first_of.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
#define _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator1 __find_first_of_ce(_ForwardIterator1 __first1,
_ForwardIterator1 __last1,
_ForwardIterator2 __first2,
_ForwardIterator2 __last2, _BinaryPredicate __pred) {
for (; __first1 != __last1; ++__first1)
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__first1, *__j))
return __first1;
return __last1;
}
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
find_first_of(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
_ForwardIterator2 __last2, _BinaryPredicate __pred) {
return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred);
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1 find_first_of(
_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_FIRST_OF_H

libcxx/include/__algorithm/find_if.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_FIND_IF_H
#define _LIBCPP___ALGORITHM_FIND_IF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator
find_if(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (__pred(*__first))
break;
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_IF_H

libcxx/include/__algorithm/find_if_not.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_FIND_IF_NOT_H
#define _LIBCPP___ALGORITHM_FIND_IF_NOT_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator
find_if_not(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (!__pred(*__first))
break;
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_IF_NOT_H

libcxx/include/__algorithm/for_each.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_FOR_EACH_H
#define _LIBCPP___ALGORITHM_FOR_EACH_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Function>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _Function for_each(_InputIterator __first,
_InputIterator __last,
_Function __f) {
for (; __first != __last; ++__first)
__f(*__first);
return __f;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FOR_EACH_H

libcxx/include/__algorithm/for_each_n.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_FOR_EACH_N_H
#define _LIBCPP___ALGORITHM_FOR_EACH_N_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 14
template <class _InputIterator, class _Size, class _Function>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator for_each_n(_InputIterator __first,
_Size __orig_n,
_Function __f) {
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
while (__n > 0) {
__f(*__first);
++__first;
--__n;
}
return __first;
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FOR_EACH_N_H

libcxx/include/__algorithm/generate.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_GENERATE_H
#define _LIBCPP___ALGORITHM_GENERATE_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Generator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
generate(_ForwardIterator __first, _ForwardIterator __last, _Generator __gen)
{
for (; __first != __last; ++__first)
*__first = __gen();
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_GENERATE_H

libcxx/include/__algorithm/generate_n.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_GENERATE_N_H
#define _LIBCPP___ALGORITHM_GENERATE_N_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _OutputIterator, class _Size, class _Generator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
generate_n(_OutputIterator __first, _Size __orig_n, _Generator __gen)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
for (; __n > 0; ++__first, (void) --__n)
*__first = __gen();
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_GENERATE_N_H

libcxx/include/__algorithm/half_positive.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_HALF_POSITIVE_H
#define _LIBCPP___ALGORITHM_HALF_POSITIVE_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// Perform division by two quickly for positive integers (llvm.org/PR39129)
template <typename _Integral>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
is_integral<_Integral>::value,
_Integral
>::type
__half_positive(_Integral __value)
{
return static_cast<_Integral>(static_cast<typename make_unsigned<_Integral>::type>(__value) / 2);
}
template <typename _Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
!is_integral<_Tp>::value,
_Tp
>::type
__half_positive(_Tp __value)
{
return __value / 2;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_HALF_POSITIVE_H

libcxx/include/__algorithm/includes.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_INCLUDES_H
#define _LIBCPP___ALGORITHM_INCLUDES_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_Compare __comp)
{
for (; __first2 != __last2; ++__first1)
{
if (__first1 == __last1 || __comp(*__first2, *__first1))
return false;
if (!__comp(*__first1, *__first2))
++__first2;
}
return true;
}
template <class _InputIterator1, class _InputIterator2, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__includes<_Comp_ref>(__first1, __last1, __first2, __last2, __comp);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2)
{
return _VSTD::includes(__first1, __last1, __first2, __last2,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_INCLUDES_H

libcxx/include/__algorithm/inplace_merge.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_INPLACE_MERGE_H
#define _LIBCPP___ALGORITHM_INPLACE_MERGE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/rotate.h>
#include <__algorithm/lower_bound.h>
#include <__algorithm/min.h>
#include <__algorithm/upper_bound.h>
#include <__iterator/iterator_traits.h>
#include <memory>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Predicate>
class __invert // invert the sense of a comparison
{
private:
_Predicate __p_;
public:
_LIBCPP_INLINE_VISIBILITY __invert() {}
_LIBCPP_INLINE_VISIBILITY
explicit __invert(_Predicate __p) : __p_(__p) {}
template <class _T1>
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _T1& __x) {return !__p_(__x);}
template <class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _T1& __x, const _T2& __y) {return __p_(__y, __x);}
};
template <class _Compare, class _InputIterator1, class _InputIterator2,
class _OutputIterator>
void __half_inplace_merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
_OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
{
_VSTD::move(__first1, __last1, __result);
return;
}
if (__comp(*__first2, *__first1))
{
*__result = _VSTD::move(*__first2);
++__first2;
}
else
{
*__result = _VSTD::move(*__first1);
++__first1;
}
}
// __first2 through __last2 are already in the right spot.
}
template <class _Compare, class _BidirectionalIterator>
void
__buffered_inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp, typename iterator_traits<_BidirectionalIterator>::difference_type __len1,
typename iterator_traits<_BidirectionalIterator>::difference_type __len2,
typename iterator_traits<_BidirectionalIterator>::value_type* __buff)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h2(__buff, __d);
if (__len1 <= __len2)
{
value_type* __p = __buff;
for (_BidirectionalIterator __i = __first; __i != __middle; __d.template __incr<value_type>(), (void) ++__i, (void) ++__p)
::new ((void*)__p) value_type(_VSTD::move(*__i));
_VSTD::__half_inplace_merge<_Compare>(__buff, __p, __middle, __last, __first, __comp);
}
else
{
value_type* __p = __buff;
for (_BidirectionalIterator __i = __middle; __i != __last; __d.template __incr<value_type>(), (void) ++__i, (void) ++__p)
::new ((void*)__p) value_type(_VSTD::move(*__i));
typedef reverse_iterator<_BidirectionalIterator> _RBi;
typedef reverse_iterator<value_type*> _Rv;
typedef __invert<_Compare> _Inverted;
_VSTD::__half_inplace_merge<_Inverted>(_Rv(__p), _Rv(__buff),
_RBi(__middle), _RBi(__first),
_RBi(__last), _Inverted(__comp));
}
}
template <class _Compare, class _BidirectionalIterator>
void
__inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp, typename iterator_traits<_BidirectionalIterator>::difference_type __len1,
typename iterator_traits<_BidirectionalIterator>::difference_type __len2,
typename iterator_traits<_BidirectionalIterator>::value_type* __buff, ptrdiff_t __buff_size)
{
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
while (true)
{
// if __middle == __last, we're done
if (__len2 == 0)
return;
if (__len1 <= __buff_size || __len2 <= __buff_size)
return _VSTD::__buffered_inplace_merge<_Compare>
(__first, __middle, __last, __comp, __len1, __len2, __buff);
// shrink [__first, __middle) as much as possible (with no moves), returning if it shrinks to 0
for (; true; ++__first, (void) --__len1)
{
if (__len1 == 0)
return;
if (__comp(*__middle, *__first))
break;
}
// __first < __middle < __last
// *__first > *__middle
// partition [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last) such that
// all elements in:
// [__first, __m1) <= [__middle, __m2)
// [__middle, __m2) < [__m1, __middle)
// [__m1, __middle) <= [__m2, __last)
// and __m1 or __m2 is in the middle of its range
_BidirectionalIterator __m1; // "median" of [__first, __middle)
_BidirectionalIterator __m2; // "median" of [__middle, __last)
difference_type __len11; // distance(__first, __m1)
difference_type __len21; // distance(__middle, __m2)
// binary search smaller range
if (__len1 < __len2)
{ // __len >= 1, __len2 >= 2
__len21 = __len2 / 2;
__m2 = __middle;
_VSTD::advance(__m2, __len21);
__m1 = _VSTD::__upper_bound<_Compare>(__first, __middle, *__m2, __comp);
__len11 = _VSTD::distance(__first, __m1);
}
else
{
if (__len1 == 1)
{ // __len1 >= __len2 && __len2 > 0, therefore __len2 == 1
// It is known *__first > *__middle
swap(*__first, *__middle);
return;
}
// __len1 >= 2, __len2 >= 1
__len11 = __len1 / 2;
__m1 = __first;
_VSTD::advance(__m1, __len11);
__m2 = _VSTD::__lower_bound<_Compare>(__middle, __last, *__m1, __comp);
__len21 = _VSTD::distance(__middle, __m2);
}
difference_type __len12 = __len1 - __len11; // distance(__m1, __middle)
difference_type __len22 = __len2 - __len21; // distance(__m2, __last)
// [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last)
// swap middle two partitions
__middle = _VSTD::rotate(__m1, __middle, __m2);
// __len12 and __len21 now have swapped meanings
// merge smaller range with recursive call and larger with tail recursion elimination
if (__len11 + __len21 < __len12 + __len22)
{
_VSTD::__inplace_merge<_Compare>(__first, __m1, __middle, __comp, __len11, __len21, __buff, __buff_size);
// _VSTD::__inplace_merge<_Compare>(__middle, __m2, __last, __comp, __len12, __len22, __buff, __buff_size);
__first = __middle;
__middle = __m2;
__len1 = __len12;
__len2 = __len22;
}
else
{
_VSTD::__inplace_merge<_Compare>(__middle, __m2, __last, __comp, __len12, __len22, __buff, __buff_size);
// _VSTD::__inplace_merge<_Compare>(__first, __m1, __middle, __comp, __len11, __len21, __buff, __buff_size);
__last = __middle;
__middle = __m1;
__len1 = __len11;
__len2 = __len21;
}
}
}
template <class _BidirectionalIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY
void
inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
difference_type __len1 = _VSTD::distance(__first, __middle);
difference_type __len2 = _VSTD::distance(__middle, __last);
difference_type __buf_size = _VSTD::min(__len1, __len2);
pair<value_type*, ptrdiff_t> __buf = _VSTD::get_temporary_buffer<value_type>(__buf_size);
unique_ptr<value_type, __return_temporary_buffer> __h(__buf.first);
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__inplace_merge<_Comp_ref>(__first, __middle, __last, __comp, __len1, __len2,
__buf.first, __buf.second);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last)
{
_VSTD::inplace_merge(__first, __middle, __last,
__less<typename iterator_traits<_BidirectionalIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_INPLACE_MERGE_H

libcxx/include/__algorithm/is_heap.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_IS_HEAP_H
#define _LIBCPP___ALGORITHM_IS_HEAP_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/is_heap_until.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _RandomAccessIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
return _VSTD::is_heap_until(__first, __last, __comp) == __last;
}
template<class _RandomAccessIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
return _VSTD::is_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_HEAP_H

libcxx/include/__algorithm/is_heap_until.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H
#define _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _RandomAccessIterator, class _Compare>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _RandomAccessIterator
is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __len = __last - __first;
difference_type __p = 0;
difference_type __c = 1;
_RandomAccessIterator __pp = __first;
while (__c < __len)
{
_RandomAccessIterator __cp = __first + __c;
if (__comp(*__pp, *__cp))
return __cp;
++__c;
++__cp;
if (__c == __len)
return __last;
if (__comp(*__pp, *__cp))
return __cp;
++__p;
++__pp;
__c = 2 * __p + 1;
}
return __last;
}
template<class _RandomAccessIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_RandomAccessIterator
is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
return _VSTD::is_heap_until(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H

libcxx/include/__algorithm/is_partitioned.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_IS_PARTITIONED_H
#define _LIBCPP___ALGORITHM_IS_PARTITIONED_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_partitioned(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (!__pred(*__first))
break;
if ( __first == __last )
return true;
++__first;
for (; __first != __last; ++__first)
if (__pred(*__first))
return false;
return true;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_PARTITIONED_H

libcxx/include/__algorithm/is_permutation.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_IS_PERMUTATION_H
#define _LIBCPP___ALGORITHM_IS_PERMUTATION_H
#include <__algorithm/comp.h>
#include <__config>
#include <__iterator/iterator_traits.h>
#include <__iterator/next.h>
#include <iterator> // FIXME: replace with <__iterator/distance.h> when it lands
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
_BinaryPredicate __pred) {
// shorten sequences as much as possible by lopping of any equal prefix
for (; __first1 != __last1; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
break;
if (__first1 == __last1)
return true;
// __first1 != __last1 && *__first1 != *__first2
typedef typename iterator_traits<_ForwardIterator1>::difference_type _D1;
_D1 __l1 = _VSTD::distance(__first1, __last1);
if (__l1 == _D1(1))
return false;
_ForwardIterator2 __last2 = _VSTD::next(__first2, __l1);
// For each element in [f1, l1) see if there are the same number of
// equal elements in [f2, l2)
for (_ForwardIterator1 __i = __first1; __i != __last1; ++__i) {
// Have we already counted the number of *__i in [f1, l1)?
_ForwardIterator1 __match = __first1;
for (; __match != __i; ++__match)
if (__pred(*__match, *__i))
break;
if (__match == __i) {
// Count number of *__i in [f2, l2)
_D1 __c2 = 0;
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__i, *__j))
++__c2;
if (__c2 == 0)
return false;
// Count number of *__i in [__i, l1) (we can start with 1)
_D1 __c1 = 1;
for (_ForwardIterator1 __j = _VSTD::next(__i); __j != __last1; ++__j)
if (__pred(*__i, *__j))
++__c1;
if (__c1 != __c2)
return false;
}
}
return true;
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::is_permutation(__first1, __last1, __first2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 11
template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
_ForwardIterator2 __last2, _BinaryPredicate __pred, forward_iterator_tag, forward_iterator_tag) {
// shorten sequences as much as possible by lopping of any equal prefix
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
break;
if (__first1 == __last1)
return __first2 == __last2;
else if (__first2 == __last2)
return false;
typedef typename iterator_traits<_ForwardIterator1>::difference_type _D1;
_D1 __l1 = _VSTD::distance(__first1, __last1);
typedef typename iterator_traits<_ForwardIterator2>::difference_type _D2;
_D2 __l2 = _VSTD::distance(__first2, __last2);
if (__l1 != __l2)
return false;
// For each element in [f1, l1) see if there are the same number of
// equal elements in [f2, l2)
for (_ForwardIterator1 __i = __first1; __i != __last1; ++__i) {
// Have we already counted the number of *__i in [f1, l1)?
_ForwardIterator1 __match = __first1;
for (; __match != __i; ++__match)
if (__pred(*__match, *__i))
break;
if (__match == __i) {
// Count number of *__i in [f2, l2)
_D1 __c2 = 0;
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__i, *__j))
++__c2;
if (__c2 == 0)
return false;
// Count number of *__i in [__i, l1) (we can start with 1)
_D1 __c1 = 1;
for (_ForwardIterator1 __j = _VSTD::next(__i); __j != __last1; ++__j)
if (__pred(*__i, *__j))
++__c1;
if (__c1 != __c2)
return false;
}
}
return true;
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool __is_permutation(_RandomAccessIterator1 __first1, _RandomAccessIterator2 __last1,
_RandomAccessIterator1 __first2, _RandomAccessIterator2 __last2,
_BinaryPredicate __pred, random_access_iterator_tag,
random_access_iterator_tag) {
if (_VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2))
return false;
return _VSTD::is_permutation<_RandomAccessIterator1, _RandomAccessIterator2,
typename add_lvalue_reference<_BinaryPredicate>::type>(__first1, __last1, __first2,
__pred);
}
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
_ForwardIterator2 __last2, _BinaryPredicate __pred) {
return _VSTD::__is_permutation<typename add_lvalue_reference<_BinaryPredicate>::type>(
__first1, __last1, __first2, __last2, __pred, typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category());
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
_ForwardIterator2 __last2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::__is_permutation(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>(),
typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category());
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_PERMUTATION_H

libcxx/include/__algorithm/is_sorted.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_IS_SORTED_H
#define _LIBCPP___ALGORITHM_IS_SORTED_H
#include <__algorithm/comp.h>
#include <__algorithm/is_sorted_until.h>
#include <__config>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_sorted(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
return _VSTD::is_sorted_until(__first, __last, __comp) == __last;
}
template<class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_sorted(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::is_sorted(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_SORTED_H

libcxx/include/__algorithm/is_sorted_until.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H
#define _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (__comp(*__i, *__first))
return __i;
__first = __i;
}
}
return __last;
}
template<class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
is_sorted_until(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::is_sorted_until(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_SORTED_UNTIL_H

libcxx/include/__algorithm/lexicographical_compare.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H
#define _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _Compare __comp)
{
for (; __first2 != __last2; ++__first1, (void) ++__first2)
{
if (__first1 == __last1 || __comp(*__first1, *__first2))
return true;
if (__comp(*__first2, *__first1))
return false;
}
return false;
}
template <class _InputIterator1, class _InputIterator2, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__lexicographical_compare<_Comp_ref>(__first1, __last1, __first2, __last2, __comp);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2)
{
return _VSTD::lexicographical_compare(__first1, __last1, __first2, __last2,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_LEXICOGRAPHICAL_COMPARE_H

libcxx/include/__algorithm/lower_bound.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_LOWER_BOUND_H
#define _LIBCPP___ALGORITHM_LOWER_BOUND_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/half_positive.h>
#include <iterator>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _ForwardIterator, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__comp(*__m, __value_))
{
__first = ++__m;
__len -= __l2 + 1;
}
else
__len = __l2;
}
return __first;
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename add_lvalue_reference<_Compare>::type _Comp_ref;
return _VSTD::__lower_bound<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::lower_bound(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_LOWER_BOUND_H

libcxx/include/__algorithm/make_heap.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MAKE_HEAP_H
#define _LIBCPP___ALGORITHM_MAKE_HEAP_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/sift_down.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __n = __last - __first;
if (__n > 1)
{
// start from the first parent, there is no need to consider children
for (difference_type __start = (__n - 2) / 2; __start >= 0; --__start)
{
_VSTD::__sift_down<_Compare>(__first, __last, __comp, __n, __first + __start);
}
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__make_heap<_Comp_ref>(__first, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::make_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MAKE_HEAP_H

libcxx/include/__algorithm/max.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MAX_H
#define _LIBCPP___ALGORITHM_MAX_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/max_element.h>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
max(const _Tp& __a, const _Tp& __b, _Compare __comp)
{
return __comp(__a, __b) ? __b : __a;
}
template <class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
max(const _Tp& __a, const _Tp& __b)
{
return _VSTD::max(__a, __b, __less<_Tp>());
}
#ifndef _LIBCPP_CXX03_LANG
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
max(initializer_list<_Tp> __t, _Compare __comp)
{
return *_VSTD::max_element(__t.begin(), __t.end(), __comp);
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
max(initializer_list<_Tp> __t)
{
return *_VSTD::max_element(__t.begin(), __t.end(), __less<_Tp>());
}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MAX_H

libcxx/include/__algorithm/max_element.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MAX_ELEMENT_H
#define _LIBCPP___ALGORITHM_MAX_ELEMENT_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
max_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value,
"std::max_element requires a ForwardIterator");
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
if (__comp(*__first, *__i))
__first = __i;
}
return __first;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
max_element(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::max_element(__first, __last,
__less<typename iterator_traits<_ForwardIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MAX_ELEMENT_H

libcxx/include/__algorithm/merge.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MERGE_H
#define _LIBCPP___ALGORITHM_MERGE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/copy.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first2, *__first1))
{
*__result = *__first2;
++__first2;
}
else
{
*__result = *__first1;
++__first1;
}
}
return _VSTD::copy(__first2, __last2, __result);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__merge<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::merge(__first1, __last1, __first2, __last2, __result, __less<__v1, __v2>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MERGE_H

libcxx/include/__algorithm/min.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MIN_H
#define _LIBCPP___ALGORITHM_MIN_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/min_element.h>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
min(const _Tp& __a, const _Tp& __b, _Compare __comp)
{
return __comp(__b, __a) ? __b : __a;
}
template <class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
min(const _Tp& __a, const _Tp& __b)
{
return _VSTD::min(__a, __b, __less<_Tp>());
}
#ifndef _LIBCPP_CXX03_LANG
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
min(initializer_list<_Tp> __t, _Compare __comp)
{
return *_VSTD::min_element(__t.begin(), __t.end(), __comp);
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
min(initializer_list<_Tp> __t)
{
return *_VSTD::min_element(__t.begin(), __t.end(), __less<_Tp>());
}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MIN_H

libcxx/include/__algorithm/min_element.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MIN_ELEMENT_H
#define _LIBCPP___ALGORITHM_MIN_ELEMENT_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
min_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value,
"std::min_element requires a ForwardIterator");
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
if (__comp(*__i, *__first))
__first = __i;
}
return __first;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
min_element(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::min_element(__first, __last,
__less<typename iterator_traits<_ForwardIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MIN_ELEMENT_H

libcxx/include/__algorithm/minmax.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MINMAX_H
#define _LIBCPP___ALGORITHM_MINMAX_H
#include <__config>
#include <__algorithm/comp.h>
#include <initializer_list>
#include <utility>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<const _Tp&, const _Tp&>
minmax(const _Tp& __a, const _Tp& __b, _Compare __comp)
{
return __comp(__b, __a) ? pair<const _Tp&, const _Tp&>(__b, __a) :
pair<const _Tp&, const _Tp&>(__a, __b);
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<const _Tp&, const _Tp&>
minmax(const _Tp& __a, const _Tp& __b)
{
return _VSTD::minmax(__a, __b, __less<_Tp>());
}
#ifndef _LIBCPP_CXX03_LANG
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_Tp, _Tp>
minmax(initializer_list<_Tp> __t, _Compare __comp)
{
typedef typename initializer_list<_Tp>::const_iterator _Iter;
_Iter __first = __t.begin();
_Iter __last = __t.end();
pair<_Tp, _Tp> __result(*__first, *__first);
++__first;
if (__t.size() % 2 == 0)
{
if (__comp(*__first, __result.first))
__result.first = *__first;
else
__result.second = *__first;
++__first;
}
while (__first != __last)
{
_Tp __prev = *__first++;
if (__comp(*__first, __prev)) {
if ( __comp(*__first, __result.first)) __result.first = *__first;
if (!__comp(__prev, __result.second)) __result.second = __prev;
}
else {
if ( __comp(__prev, __result.first)) __result.first = __prev;
if (!__comp(*__first, __result.second)) __result.second = *__first;
}
__first++;
}
return __result;
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_Tp, _Tp>
minmax(initializer_list<_Tp> __t)
{
return _VSTD::minmax(__t, __less<_Tp>());
}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MINMAX_H

libcxx/include/__algorithm/minmax_element.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MINMAX_ELEMENT_H
#define _LIBCPP___ALGORITHM_MINMAX_ELEMENT_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <utility>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_ForwardIterator, _ForwardIterator>
minmax_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value,
"std::minmax_element requires a ForwardIterator");
pair<_ForwardIterator, _ForwardIterator> __result(__first, __first);
if (__first != __last)
{
if (++__first != __last)
{
if (__comp(*__first, *__result.first))
__result.first = __first;
else
__result.second = __first;
while (++__first != __last)
{
_ForwardIterator __i = __first;
if (++__first == __last)
{
if (__comp(*__i, *__result.first))
__result.first = __i;
else if (!__comp(*__i, *__result.second))
__result.second = __i;
break;
}
else
{
if (__comp(*__first, *__i))
{
if (__comp(*__first, *__result.first))
__result.first = __first;
if (!__comp(*__i, *__result.second))
__result.second = __i;
}
else
{
if (__comp(*__i, *__result.first))
__result.first = __i;
if (!__comp(*__first, *__result.second))
__result.second = __first;
}
}
}
}
}
return __result;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_ForwardIterator, _ForwardIterator>
minmax_element(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::minmax_element(__first, __last,
__less<typename iterator_traits<_ForwardIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MINMAX_ELEMENT_H

libcxx/include/__algorithm/mismatch.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_MISMATCH_H
#define _LIBCPP___ALGORITHM_MISMATCH_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <utility>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) {
for (; __first1 != __last1; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
break;
return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) {
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::mismatch(__first1, __last1, __first2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 11
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_BinaryPredicate __pred) {
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
break;
return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) {
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::mismatch(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MISMATCH_H

libcxx/include/__algorithm/move.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MOVE_H
#define _LIBCPP___ALGORITHM_MOVE_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <cstring>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// move
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
for (; __first != __last; ++__first, (void) ++__result)
*__result = _VSTD::move(*__first);
return __result;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
return _VSTD::__move_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_move_assignable<_Up>::value,
_Up*
>::type
__move(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
return __result + __n;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
move(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__move_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__move(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MOVE_H

libcxx/include/__algorithm/move_backward.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_MOVE_BACKWARD_H
#define _LIBCPP___ALGORITHM_MOVE_BACKWARD_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <cstring>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move_backward_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
while (__first != __last)
*--__result = _VSTD::move(*--__last);
return __result;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move_backward(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
return _VSTD::__move_backward_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_move_assignable<_Up>::value,
_Up*
>::type
__move_backward(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
{
__result -= __n;
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
}
return __result;
}
template <class _BidirectionalIterator1, class _BidirectionalIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_BidirectionalIterator2
move_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last,
_BidirectionalIterator2 __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__move_backward_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__move_backward(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_MOVE_BACKWARD_H

libcxx/include/__algorithm/next_permutation.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_NEXT_PERMUTATION_H
#define _LIBCPP___ALGORITHM_NEXT_PERMUTATION_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/reverse.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
_BidirectionalIterator __i = __last;
if (__first == __last || __first == --__i)
return false;
while (true)
{
_BidirectionalIterator __ip1 = __i;
if (__comp(*--__i, *__ip1))
{
_BidirectionalIterator __j = __last;
while (!__comp(*__i, *--__j))
;
swap(*__i, *__j);
_VSTD::reverse(__ip1, __last);
return true;
}
if (__i == __first)
{
_VSTD::reverse(__first, __last);
return false;
}
}
}
template <class _BidirectionalIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__next_permutation<_Comp_ref>(__first, __last, __comp);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
return _VSTD::next_permutation(__first, __last,
__less<typename iterator_traits<_BidirectionalIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_NEXT_PERMUTATION_H

libcxx/include/__algorithm/none_of.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_NONE_OF_H
#define _LIBCPP___ALGORITHM_NONE_OF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
none_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (__pred(*__first))
return false;
return true;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_NONE_OF_H

libcxx/include/__algorithm/nth_element.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_NTH_ELEMENT_H
#define _LIBCPP___ALGORITHM_NTH_ELEMENT_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/sort.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 bool
__nth_element_find_guard(_RandomAccessIterator& __i, _RandomAccessIterator& __j,
_RandomAccessIterator __m, _Compare __comp)
{
// manually guard downward moving __j against __i
while (true) {
if (__i == --__j) {
return false;
}
if (__comp(*__j, *__m)) {
return true; // found guard for downward moving __j, now use unguarded partition
}
}
}
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last, _Compare __comp)
{
// _Compare is known to be a reference type
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
const difference_type __limit = 7;
while (true)
{
if (__nth == __last)
return;
difference_type __len = __last - __first;
switch (__len)
{
case 0:
case 1:
return;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return;
case 3:
{
_RandomAccessIterator __m = __first;
_VSTD::__sort3<_Compare>(__first, ++__m, --__last, __comp);
return;
}
}
if (__len <= __limit)
{
_VSTD::__selection_sort<_Compare>(__first, __last, __comp);
return;
}
// __len > __limit >= 3
_RandomAccessIterator __m = __first + __len/2;
_RandomAccessIterator __lm1 = __last;
unsigned __n_swaps = _VSTD::__sort3<_Compare>(__first, __m, --__lm1, __comp);
// *__m is median
// partition [__first, __m) < *__m and *__m <= [__m, __last)
// (this inhibits tossing elements equivalent to __m around unnecessarily)
_RandomAccessIterator __i = __first;
_RandomAccessIterator __j = __lm1;
// j points beyond range to be tested, *__lm1 is known to be <= *__m
// The search going up is known to be guarded but the search coming down isn't.
// Prime the downward search with a guard.
if (!__comp(*__i, *__m)) // if *__first == *__m
{
// *__first == *__m, *__first doesn't go in first part
if (_VSTD::__nth_element_find_guard<_Compare>(__i, __j, __m, __comp)) {
swap(*__i, *__j);
++__n_swaps;
} else {
// *__first == *__m, *__m <= all other elements
// Partition instead into [__first, __i) == *__first and *__first < [__i, __last)
++__i; // __first + 1
__j = __last;
if (!__comp(*__first, *--__j)) { // we need a guard if *__first == *(__last-1)
while (true) {
if (__i == __j) {
return; // [__first, __last) all equivalent elements
} else if (__comp(*__first, *__i)) {
swap(*__i, *__j);
++__n_swaps;
++__i;
break;
}
++__i;
}
}
// [__first, __i) == *__first and *__first < [__j, __last) and __j == __last - 1
if (__i == __j) {
return;
}
while (true) {
while (!__comp(*__first, *__i))
++__i;
while (__comp(*__first, *--__j))
;
if (__i >= __j)
break;
swap(*__i, *__j);
++__n_swaps;
++__i;
}
// [__first, __i) == *__first and *__first < [__i, __last)
// The first part is sorted,
if (__nth < __i) {
return;
}
// __nth_element the second part
// _VSTD::__nth_element<_Compare>(__i, __nth, __last, __comp);
__first = __i;
continue;
}
}
++__i;
// j points beyond range to be tested, *__lm1 is known to be <= *__m
// if not yet partitioned...
if (__i < __j)
{
// known that *(__i - 1) < *__m
while (true)
{
// __m still guards upward moving __i
while (__comp(*__i, *__m))
++__i;
// It is now known that a guard exists for downward moving __j
while (!__comp(*--__j, *__m))
;
if (__i >= __j)
break;
swap(*__i, *__j);
++__n_swaps;
// It is known that __m != __j
// If __m just moved, follow it
if (__m == __i)
__m = __j;
++__i;
}
}
// [__first, __i) < *__m and *__m <= [__i, __last)
if (__i != __m && __comp(*__m, *__i))
{
swap(*__i, *__m);
++__n_swaps;
}
// [__first, __i) < *__i and *__i <= [__i+1, __last)
if (__nth == __i)
return;
if (__n_swaps == 0)
{
// We were given a perfectly partitioned sequence. Coincidence?
if (__nth < __i)
{
// Check for [__first, __i) already sorted
__j = __m = __first;
while (true) {
if (++__j == __i) {
// [__first, __i) sorted
return;
}
if (__comp(*__j, *__m)) {
// not yet sorted, so sort
break;
}
__m = __j;
}
}
else
{
// Check for [__i, __last) already sorted
__j = __m = __i;
while (true) {
if (++__j == __last) {
// [__i, __last) sorted
return;
}
if (__comp(*__j, *__m)) {
// not yet sorted, so sort
break;
}
__m = __j;
}
}
}
// __nth_element on range containing __nth
if (__nth < __i)
{
// _VSTD::__nth_element<_Compare>(__first, __nth, __i, __comp);
__last = __i;
}
else
{
// _VSTD::__nth_element<_Compare>(__i+1, __nth, __last, __comp);
__first = ++__i;
}
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__nth_element<_Comp_ref>(__first, __nth, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last)
{
_VSTD::nth_element(__first, __nth, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_NTH_ELEMENT_H

libcxx/include/__algorithm/partial_sort.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_PARTIAL_SORT_H
#define _LIBCPP___ALGORITHM_PARTIAL_SORT_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/make_heap.h>
#include <__algorithm/sift_down.h>
#include <__algorithm/sort_heap.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 void
__partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
_Compare __comp)
{
_VSTD::__make_heap<_Compare>(__first, __middle, __comp);
typename iterator_traits<_RandomAccessIterator>::difference_type __len = __middle - __first;
for (_RandomAccessIterator __i = __middle; __i != __last; ++__i)
{
if (__comp(*__i, *__first))
{
swap(*__i, *__first);
_VSTD::__sift_down<_Compare>(__first, __middle, __comp, __len, __first);
}
}
_VSTD::__sort_heap<_Compare>(__first, __middle, __comp);
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
_Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__partial_sort<_Comp_ref>(__first, __middle, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last)
{
_VSTD::partial_sort(__first, __middle, __last,
__less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_PARTIAL_SORT_H

libcxx/include/__algorithm/partial_sort_copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_PARTIAL_SORT_COPY_H
#define _LIBCPP___ALGORITHM_PARTIAL_SORT_COPY_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/make_heap.h>
#include <__algorithm/sift_down.h>
#include <__algorithm/sort_heap.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _RandomAccessIterator
__partial_sort_copy(_InputIterator __first, _InputIterator __last,
_RandomAccessIterator __result_first, _RandomAccessIterator __result_last, _Compare __comp)
{
_RandomAccessIterator __r = __result_first;
if (__r != __result_last)
{
for (; __first != __last && __r != __result_last; ++__first, (void) ++__r)
*__r = *__first;
_VSTD::__make_heap<_Compare>(__result_first, __r, __comp);
typename iterator_traits<_RandomAccessIterator>::difference_type __len = __r - __result_first;
for (; __first != __last; ++__first)
if (__comp(*__first, *__result_first))
{
*__result_first = *__first;
_VSTD::__sift_down<_Compare>(__result_first, __r, __comp, __len, __result_first);
}
_VSTD::__sort_heap<_Compare>(__result_first, __r, __comp);
}
return __r;
}
template <class _InputIterator, class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_RandomAccessIterator
partial_sort_copy(_InputIterator __first, _InputIterator __last,
_RandomAccessIterator __result_first, _RandomAccessIterator __result_last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__partial_sort_copy<_Comp_ref>(__first, __last, __result_first, __result_last, __comp);
}
template <class _InputIterator, class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_RandomAccessIterator
partial_sort_copy(_InputIterator __first, _InputIterator __last,
_RandomAccessIterator __result_first, _RandomAccessIterator __result_last)
{
return _VSTD::partial_sort_copy(__first, __last, __result_first, __result_last,
__less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_PARTIAL_SORT_COPY_H

libcxx/include/__algorithm/partition.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_PARTITION_H
#define _LIBCPP___ALGORITHM_PARTITION_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Predicate, class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, forward_iterator_tag)
{
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
for (_ForwardIterator __p = __first; ++__p != __last;)
{
if (__pred(*__p))
{
swap(*__first, *__p);
++__first;
}
}
return __first;
}
template <class _Predicate, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _BidirectionalIterator
__partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred,
bidirectional_iterator_tag)
{
while (true)
{
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
do
{
if (__first == --__last)
return __first;
} while (!__pred(*__last));
swap(*__first, *__last);
++__first;
}
}
template <class _ForwardIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
return _VSTD::__partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, typename iterator_traits<_ForwardIterator>::iterator_category());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_PARTITION_H

libcxx/include/__algorithm/partition_copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_PARTITION_COPY_H
#define _LIBCPP___ALGORITHM_PARTITION_COPY_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <utility> // pair
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator1,
class _OutputIterator2, class _Predicate>
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_OutputIterator1, _OutputIterator2>
partition_copy(_InputIterator __first, _InputIterator __last,
_OutputIterator1 __out_true, _OutputIterator2 __out_false,
_Predicate __pred)
{
for (; __first != __last; ++__first)
{
if (__pred(*__first))
{
*__out_true = *__first;
++__out_true;
}
else
{
*__out_false = *__first;
++__out_false;
}
}
return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_PARTITION_COPY_H

libcxx/include/__algorithm/partition_point.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_PARTITION_POINT_H
#define _LIBCPP___ALGORITHM_PARTITION_POINT_H
#include <__config>
#include <__algorithm/half_positive.h>
#include <iterator>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _ForwardIterator, class _Predicate>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
partition_point(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__pred(*__m))
{
__first = ++__m;
__len -= __l2 + 1;
}
else
__len = __l2;
}
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_PARTITION_POINT_H

libcxx/include/__algorithm/pop_heap.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_POP_HEAP_H
#define _LIBCPP___ALGORITHM_POP_HEAP_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/sift_down.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len)
{
if (__len > 1)
{
swap(*__first, *--__last);
_VSTD::__sift_down<_Compare>(__first, __last, __comp, __len - 1, __first);
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__pop_heap<_Comp_ref>(__first, __last, __comp, __last - __first);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::pop_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_POP_HEAP_H

libcxx/include/__algorithm/prev_permutation.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_PREV_PERMUTATION_H
#define _LIBCPP___ALGORITHM_PREV_PERMUTATION_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/reverse.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
_BidirectionalIterator __i = __last;
if (__first == __last || __first == --__i)
return false;
while (true)
{
_BidirectionalIterator __ip1 = __i;
if (__comp(*__ip1, *--__i))
{
_BidirectionalIterator __j = __last;
while (!__comp(*--__j, *__i))
;
swap(*__i, *__j);
_VSTD::reverse(__ip1, __last);
return true;
}
if (__i == __first)
{
_VSTD::reverse(__first, __last);
return false;
}
}
}
template <class _BidirectionalIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__prev_permutation<_Comp_ref>(__first, __last, __comp);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
return _VSTD::prev_permutation(__first, __last,
__less<typename iterator_traits<_BidirectionalIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_PREV_PERMUTATION_H

libcxx/include/__algorithm/push_heap.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_PUSH_HEAP_H
#define _LIBCPP___ALGORITHM_PUSH_HEAP_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__sift_up(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
if (__len > 1)
{
__len = (__len - 2) / 2;
_RandomAccessIterator __ptr = __first + __len;
if (__comp(*__ptr, *--__last))
{
value_type __t(_VSTD::move(*__last));
do
{
*__last = _VSTD::move(*__ptr);
__last = __ptr;
if (__len == 0)
break;
__len = (__len - 1) / 2;
__ptr = __first + __len;
} while (__comp(*__ptr, __t));
*__last = _VSTD::move(__t);
}
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__sift_up<_Comp_ref>(__first, __last, __comp, __last - __first);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::push_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_PUSH_HEAP_H

libcxx/include/__algorithm/remove.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REMOVE_H
#define _LIBCPP___ALGORITHM_REMOVE_H
#include <__config>
#include <__algorithm/find.h>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
remove(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
__first = _VSTD::find(__first, __last, __value_);
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (!(*__i == __value_))
{
*__first = _VSTD::move(*__i);
++__first;
}
}
}
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REMOVE_H

libcxx/include/__algorithm/remove_copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REMOVE_COPY_H
#define _LIBCPP___ALGORITHM_REMOVE_COPY_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
remove_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, const _Tp& __value_)
{
for (; __first != __last; ++__first)
{
if (!(*__first == __value_))
{
*__result = *__first;
++__result;
}
}
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REMOVE_COPY_H

libcxx/include/__algorithm/remove_copy_if.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REMOVE_COPY_IF_H
#define _LIBCPP___ALGORITHM_REMOVE_COPY_IF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
remove_copy_if(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _Predicate __pred)
{
for (; __first != __last; ++__first)
{
if (!__pred(*__first))
{
*__result = *__first;
++__result;
}
}
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REMOVE_COPY_IF_H

libcxx/include/__algorithm/remove_if.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REMOVE_IF_H
#define _LIBCPP___ALGORITHM_REMOVE_IF_H
#include <__config>
#include <__algorithm/find_if.h>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
remove_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
__first = _VSTD::find_if<_ForwardIterator, typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred);
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (!__pred(*__i))
{
*__first = _VSTD::move(*__i);
++__first;
}
}
}
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REMOVE_IF_H

libcxx/include/__algorithm/replace.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REPLACE_H
#define _LIBCPP___ALGORITHM_REPLACE_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
replace(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __old_value, const _Tp& __new_value)
{
for (; __first != __last; ++__first)
if (*__first == __old_value)
*__first = __new_value;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REPLACE_H

libcxx/include/__algorithm/replace_copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REPLACE_COPY_H
#define _LIBCPP___ALGORITHM_REPLACE_COPY_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
replace_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result,
const _Tp& __old_value, const _Tp& __new_value)
{
for (; __first != __last; ++__first, (void) ++__result)
if (*__first == __old_value)
*__result = __new_value;
else
*__result = *__first;
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REPLACE_COPY_H

libcxx/include/__algorithm/replace_copy_if.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REPLACE_COPY_IF_H
#define _LIBCPP___ALGORITHM_REPLACE_COPY_IF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator, class _Predicate, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
replace_copy_if(_InputIterator __first, _InputIterator __last, _OutputIterator __result,
_Predicate __pred, const _Tp& __new_value)
{
for (; __first != __last; ++__first, (void) ++__result)
if (__pred(*__first))
*__result = __new_value;
else
*__result = *__first;
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REPLACE_COPY_IF_H

libcxx/include/__algorithm/replace_if.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REPLACE_IF_H
#define _LIBCPP___ALGORITHM_REPLACE_IF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Predicate, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
replace_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, const _Tp& __new_value)
{
for (; __first != __last; ++__first)
if (__pred(*__first))
*__first = __new_value;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REPLACE_IF_H

libcxx/include/__algorithm/reverse.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REVERSE_H
#define _LIBCPP___ALGORITHM_REVERSE_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__reverse(_BidirectionalIterator __first, _BidirectionalIterator __last, bidirectional_iterator_tag)
{
while (__first != __last)
{
if (__first == --__last)
break;
_VSTD::iter_swap(__first, __last);
++__first;
}
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__reverse(_RandomAccessIterator __first, _RandomAccessIterator __last, random_access_iterator_tag)
{
if (__first != __last)
for (; __first < --__last; ++__first)
_VSTD::iter_swap(__first, __last);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
_VSTD::__reverse(__first, __last, typename iterator_traits<_BidirectionalIterator>::iterator_category());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REVERSE_H

libcxx/include/__algorithm/reverse_copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_REVERSE_COPY_H
#define _LIBCPP___ALGORITHM_REVERSE_COPY_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
reverse_copy(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
for (; __first != __last; ++__result)
*__result = *--__last;
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_REVERSE_COPY_H

libcxx/include/__algorithm/rotate.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_ROTATE_H
#define _LIBCPP___ALGORITHM_ROTATE_H
#include <__algorithm/move.h>
#include <__algorithm/move_backward.h>
#include <__config>
#include <__iterator/iterator_traits.h>
#include <__iterator/next.h>
#include <__iterator/prev.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator
__rotate_left(_ForwardIterator __first, _ForwardIterator __last)
{
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
value_type __tmp = _VSTD::move(*__first);
_ForwardIterator __lm1 = _VSTD::move(_VSTD::next(__first), __last, __first);
*__lm1 = _VSTD::move(__tmp);
return __lm1;
}
template <class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _BidirectionalIterator
__rotate_right(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
_BidirectionalIterator __lm1 = _VSTD::prev(__last);
value_type __tmp = _VSTD::move(*__lm1);
_BidirectionalIterator __fp1 = _VSTD::move_backward(__first, __lm1, __last);
*__first = _VSTD::move(__tmp);
return __fp1;
}
template <class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX14 _ForwardIterator
__rotate_forward(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last)
{
_ForwardIterator __i = __middle;
while (true)
{
swap(*__first, *__i);
++__first;
if (++__i == __last)
break;
if (__first == __middle)
__middle = __i;
}
_ForwardIterator __r = __first;
if (__first != __middle)
{
__i = __middle;
while (true)
{
swap(*__first, *__i);
++__first;
if (++__i == __last)
{
if (__first == __middle)
break;
__i = __middle;
}
else if (__first == __middle)
__middle = __i;
}
}
return __r;
}
template<typename _Integral>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX14 _Integral
__algo_gcd(_Integral __x, _Integral __y)
{
do
{
_Integral __t = __x % __y;
__x = __y;
__y = __t;
} while (__y);
return __x;
}
template<typename _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX14 _RandomAccessIterator
__rotate_gcd(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
const difference_type __m1 = __middle - __first;
const difference_type __m2 = __last - __middle;
if (__m1 == __m2)
{
_VSTD::swap_ranges(__first, __middle, __middle);
return __middle;
}
const difference_type __g = _VSTD::__algo_gcd(__m1, __m2);
for (_RandomAccessIterator __p = __first + __g; __p != __first;)
{
value_type __t(_VSTD::move(*--__p));
_RandomAccessIterator __p1 = __p;
_RandomAccessIterator __p2 = __p1 + __m1;
do
{
*__p1 = _VSTD::move(*__p2);
__p1 = __p2;
const difference_type __d = __last - __p2;
if (__m1 < __d)
__p2 += __m1;
else
__p2 = __first + (__m1 - __d);
} while (__p2 != __p);
*__p1 = _VSTD::move(__t);
}
return __first + __m2;
}
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator
__rotate(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last,
_VSTD::forward_iterator_tag)
{
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
if (is_trivially_move_assignable<value_type>::value)
{
if (_VSTD::next(__first) == __middle)
return _VSTD::__rotate_left(__first, __last);
}
return _VSTD::__rotate_forward(__first, __middle, __last);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11 _BidirectionalIterator
__rotate(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
bidirectional_iterator_tag)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
if (is_trivially_move_assignable<value_type>::value)
{
if (_VSTD::next(__first) == __middle)
return _VSTD::__rotate_left(__first, __last);
if (_VSTD::next(__middle) == __last)
return _VSTD::__rotate_right(__first, __last);
}
return _VSTD::__rotate_forward(__first, __middle, __last);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11 _RandomAccessIterator
__rotate(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
random_access_iterator_tag)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
if (is_trivially_move_assignable<value_type>::value)
{
if (_VSTD::next(__first) == __middle)
return _VSTD::__rotate_left(__first, __last);
if (_VSTD::next(__middle) == __last)
return _VSTD::__rotate_right(__first, __last);
return _VSTD::__rotate_gcd(__first, __middle, __last);
}
return _VSTD::__rotate_forward(__first, __middle, __last);
}
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
rotate(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last)
{
if (__first == __middle)
return __last;
if (__middle == __last)
return __first;
return _VSTD::__rotate(__first, __middle, __last,
typename iterator_traits<_ForwardIterator>::iterator_category());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ROTATE_H

libcxx/include/__algorithm/rotate_copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_ROTATE_COPY_H
#define _LIBCPP___ALGORITHM_ROTATE_COPY_H
#include <__config>
#include <__algorithm/copy.h>
#include <iterator>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
rotate_copy(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last, _OutputIterator __result)
{
return _VSTD::copy(__first, __middle, _VSTD::copy(__middle, __last, __result));
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ROTATE_COPY_H

libcxx/include/__algorithm/sample.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SAMPLE_H
#define _LIBCPP___ALGORITHM_SAMPLE_H
#include <__config>
#include <__algorithm/min.h>
#include <__random/uniform_int_distribution.h>
#include <iterator>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
_LIBCPP_INLINE_VISIBILITY
_SampleIterator __sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n,
_UniformRandomNumberGenerator & __g,
input_iterator_tag) {
_Distance __k = 0;
for (; __first != __last && __k < __n; ++__first, (void) ++__k)
__output_iter[__k] = *__first;
_Distance __sz = __k;
for (; __first != __last; ++__first, (void) ++__k) {
_Distance __r = uniform_int_distribution<_Distance>(0, __k)(__g);
if (__r < __sz)
__output_iter[__r] = *__first;
}
return __output_iter + _VSTD::min(__n, __k);
}
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
_LIBCPP_INLINE_VISIBILITY
_SampleIterator __sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n,
_UniformRandomNumberGenerator& __g,
forward_iterator_tag) {
_Distance __unsampled_sz = _VSTD::distance(__first, __last);
for (__n = _VSTD::min(__n, __unsampled_sz); __n != 0; ++__first) {
_Distance __r = uniform_int_distribution<_Distance>(0, --__unsampled_sz)(__g);
if (__r < __n) {
*__output_iter++ = *__first;
--__n;
}
}
return __output_iter;
}
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
_LIBCPP_INLINE_VISIBILITY
_SampleIterator __sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n, _UniformRandomNumberGenerator& __g) {
typedef typename iterator_traits<_PopulationIterator>::iterator_category
_PopCategory;
typedef typename iterator_traits<_PopulationIterator>::difference_type
_Difference;
static_assert(__is_cpp17_forward_iterator<_PopulationIterator>::value ||
__is_cpp17_random_access_iterator<_SampleIterator>::value,
"SampleIterator must meet the requirements of RandomAccessIterator");
typedef typename common_type<_Distance, _Difference>::type _CommonType;
_LIBCPP_ASSERT(__n >= 0, "N must be a positive number.");
return _VSTD::__sample(
__first, __last, __output_iter, _CommonType(__n),
__g, _PopCategory());
}
#if _LIBCPP_STD_VER > 14
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
inline _LIBCPP_INLINE_VISIBILITY
_SampleIterator sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n, _UniformRandomNumberGenerator&& __g) {
return _VSTD::__sample(__first, __last, __output_iter, __n, __g);
}
#endif // _LIBCPP_STD_VER > 14
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SAMPLE_H

libcxx/include/__algorithm/search.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_SEARCH_H
#define _LIBCPP___ALGORITHM_SEARCH_H
#include <__config>
#include <__algorithm/comp.h>
#include <__functional/search.h>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred) {
return _VSTD::__search<typename add_lvalue_reference<_BinaryPredicate>::type>(
__first1, __last1, __first2, __last2, __pred,
typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category()).first;
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
search(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::search(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 14
template <class _ForwardIterator, class _Searcher>
_LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
search(_ForwardIterator __f, _ForwardIterator __l, const _Searcher& __s) {
return __s(__f, __l).first;
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SEARCH_H

libcxx/include/__algorithm/search_n.h

  • This file was added.
// -*- 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 _LIBCPP___ALGORITHM_SEARCH_N_H
#define _LIBCPP___ALGORITHM_SEARCH_N_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BinaryPredicate, class _ForwardIterator, class _Size, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator __search_n(_ForwardIterator __first, _ForwardIterator __last,
_Size __count, const _Tp& __value_, _BinaryPredicate __pred,
forward_iterator_tag) {
if (__count <= 0)
return __first;
while (true) {
// Find first element in sequence that matchs __value_, with a mininum of loop checks
while (true) {
if (__first == __last) // return __last if no element matches __value_
return __last;
if (__pred(*__first, __value_))
break;
++__first;
}
// *__first matches __value_, now match elements after here
_ForwardIterator __m = __first;
_Size __c(0);
while (true) {
if (++__c == __count) // If pattern exhausted, __first is the answer (works for 1 element pattern)
return __first;
if (++__m == __last) // Otherwise if source exhaused, pattern not found
return __last;
if (!__pred(*__m, __value_)) // if there is a mismatch, restart with a new __first
{
__first = __m;
++__first;
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _RandomAccessIterator, class _Size, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _RandomAccessIterator __search_n(_RandomAccessIterator __first,
_RandomAccessIterator __last, _Size __count,
const _Tp& __value_, _BinaryPredicate __pred,
random_access_iterator_tag) {
if (__count <= 0)
return __first;
_Size __len = static_cast<_Size>(__last - __first);
if (__len < __count)
return __last;
const _RandomAccessIterator __s = __last - (__count - 1); // Start of pattern match can't go beyond here
while (true) {
// Find first element in sequence that matchs __value_, with a mininum of loop checks
while (true) {
if (__first >= __s) // return __last if no element matches __value_
return __last;
if (__pred(*__first, __value_))
break;
++__first;
}
// *__first matches __value_, now match elements after here
_RandomAccessIterator __m = __first;
_Size __c(0);
while (true) {
if (++__c == __count) // If pattern exhausted, __first is the answer (works for 1 element pattern)
return __first;
++__m; // no need to check range on __m because __s guarantees we have enough source
if (!__pred(*__m, __value_)) // if there is a mismatch, restart with a new __first
{
__first = __m;
++__first;
break;
} // else there is a match, check next elements
}
}
}
template <class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator search_n(
_ForwardIterator __first, _ForwardIterator __last, _Size __count, const _Tp& __value_, _BinaryPredicate __pred) {
return _VSTD::__search_n<typename add_lvalue_reference<_BinaryPredicate>::type>(
__first, __last, _VSTD::__convert_to_integral(__count), __value_, __pred,
typename iterator_traits<_ForwardIterator>::iterator_category());
}
template <class _ForwardIterator, class _Size, class _Tp>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
search_n(_ForwardIterator __first, _ForwardIterator __last, _Size __count, const _Tp& __value_) {
typedef typename iterator_traits<_ForwardIterator>::value_type __v;
return _VSTD::search_n(__first, __last, _VSTD::__convert_to_integral(__count), __value_, __equal_to<__v, _Tp>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SEARCH_N_H

libcxx/include/__algorithm/set_difference.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SET_DIFFERENCE_H
#define _LIBCPP___ALGORITHM_SET_DIFFERENCE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/copy.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
while (__first1 != __last1)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first1, *__first2))
{
*__result = *__first1;
++__result;
++__first1;
}
else
{
if (!__comp(*__first2, *__first1))
++__first1;
++__first2;
}
}
return __result;
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_difference<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_difference(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SET_DIFFERENCE_H

libcxx/include/__algorithm/set_intersection.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SET_INTERSECTION_H
#define _LIBCPP___ALGORITHM_SET_INTERSECTION_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
while (__first1 != __last1 && __first2 != __last2)
{
if (__comp(*__first1, *__first2))
++__first1;
else
{
if (!__comp(*__first2, *__first1))
{
*__result = *__first1;
++__result;
++__first1;
}
++__first2;
}
}
return __result;
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_intersection<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_intersection(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SET_INTERSECTION_H

libcxx/include/__algorithm/set_symmetric_difference.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SET_SYMMETRIC_DIFFERENCE_H
#define _LIBCPP___ALGORITHM_SET_SYMMETRIC_DIFFERENCE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/copy.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
while (__first1 != __last1)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first1, *__first2))
{
*__result = *__first1;
++__result;
++__first1;
}
else
{
if (__comp(*__first2, *__first1))
{
*__result = *__first2;
++__result;
}
else
++__first1;
++__first2;
}
}
return _VSTD::copy(__first2, __last2, __result);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_symmetric_difference<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_symmetric_difference(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SET_SYMMETRIC_DIFFERENCE_H

libcxx/include/__algorithm/set_union.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SET_UNION_H
#define _LIBCPP___ALGORITHM_SET_UNION_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/copy.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_union(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first2, *__first1))
{
*__result = *__first2;
++__first2;
}
else
{
if (!__comp(*__first1, *__first2))
++__first2;
*__result = *__first1;
++__first1;
}
}
return _VSTD::copy(__first2, __last2, __result);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_union(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_union<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_union(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_union(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SET_UNION_H

libcxx/include/__algorithm/shift_left.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SHIFT_LEFT_H
#define _LIBCPP___ALGORITHM_SHIFT_LEFT_H
#include <__config>
#include <__algorithm/move.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 17
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY constexpr
_ForwardIterator
shift_left(_ForwardIterator __first, _ForwardIterator __last,
typename iterator_traits<_ForwardIterator>::difference_type __n)
{
if (__n == 0) {
return __last;
}
_ForwardIterator __m = __first;
if constexpr (__is_cpp17_random_access_iterator<_ForwardIterator>::value) {
if (__n >= __last - __first) {
return __first;
}
__m += __n;
} else {
for (; __n > 0; --__n) {
if (__m == __last) {
return __first;
}
++__m;
}
}
return _VSTD::move(__m, __last, __first);
}
#endif // _LIBCPP_STD_VER > 17
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SHIFT_LEFT_H

libcxx/include/__algorithm/shift_right.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SHIFT_RIGHT_H
#define _LIBCPP___ALGORITHM_SHIFT_RIGHT_H
#include <__config>
#include <__algorithm/move.h>
#include <__algorithm/move_backward.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 17
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY constexpr
_ForwardIterator
shift_right(_ForwardIterator __first, _ForwardIterator __last,
typename iterator_traits<_ForwardIterator>::difference_type __n)
{
if (__n == 0) {
return __first;
}
if constexpr (__is_cpp17_random_access_iterator<_ForwardIterator>::value) {
decltype(__n) __d = __last - __first;
if (__n >= __d) {
return __last;
}
_ForwardIterator __m = __first + (__d - __n);
return _VSTD::move_backward(__first, __m, __last);
} else if constexpr (__is_cpp17_bidirectional_iterator<_ForwardIterator>::value) {
_ForwardIterator __m = __last;
for (; __n > 0; --__n) {
if (__m == __first) {
return __last;
}
--__m;
}
return _VSTD::move_backward(__first, __m, __last);
} else {
_ForwardIterator __ret = __first;
for (; __n > 0; --__n) {
if (__ret == __last) {
return __last;
}
++__ret;
}
// We have an __n-element scratch space from __first to __ret.
// Slide an __n-element window [__trail, __lead) from left to right.
// We're essentially doing swap_ranges(__first, __ret, __trail, __lead)
// over and over; but once __lead reaches __last we needn't bother
// to save the values of elements [__trail, __last).
auto __trail = __first;
auto __lead = __ret;
while (__trail != __ret) {
if (__lead == __last) {
_VSTD::move(__first, __trail, __ret);
return __ret;
}
++__trail;
++__lead;
}
_ForwardIterator __mid = __first;
while (true) {
if (__lead == __last) {
__trail = _VSTD::move(__mid, __ret, __trail);
_VSTD::move(__first, __mid, __trail);
return __ret;
}
swap(*__mid, *__trail);
++__mid;
++__trail;
++__lead;
if (__mid == __ret) {
__mid = __first;
}
}
}
}
#endif // _LIBCPP_STD_VER > 17
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SHIFT_RIGHT_H

libcxx/include/__algorithm/shuffle.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SHUFFLE_H
#define _LIBCPP___ALGORITHM_SHUFFLE_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <__random/uniform_int_distribution.h>
#include <cstddef>
#include <cstdint>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE) \
|| defined(_LIBCPP_BUILDING_LIBRARY)
class _LIBCPP_TYPE_VIS __rs_default;
_LIBCPP_FUNC_VIS __rs_default __rs_get();
class _LIBCPP_TYPE_VIS __rs_default
{
static unsigned __c_;
__rs_default();
public:
typedef uint_fast32_t result_type;
static const result_type _Min = 0;
static const result_type _Max = 0xFFFFFFFF;
__rs_default(const __rs_default&);
~__rs_default();
result_type operator()();
static _LIBCPP_CONSTEXPR result_type min() {return _Min;}
static _LIBCPP_CONSTEXPR result_type max() {return _Max;}
friend _LIBCPP_FUNC_VIS __rs_default __rs_get();
};
_LIBCPP_FUNC_VIS __rs_default __rs_get();
template <class _RandomAccessIterator>
_LIBCPP_DEPRECATED_IN_CXX14 void
random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef uniform_int_distribution<ptrdiff_t> _Dp;
typedef typename _Dp::param_type _Pp;
difference_type __d = __last - __first;
if (__d > 1)
{
_Dp __uid;
__rs_default __g = __rs_get();
for (--__last, (void) --__d; __first < __last; ++__first, (void) --__d)
{
difference_type __i = __uid(__g, _Pp(0, __d));
if (__i != difference_type(0))
swap(*__first, *(__first + __i));
}
}
}
template <class _RandomAccessIterator, class _RandomNumberGenerator>
_LIBCPP_DEPRECATED_IN_CXX14 void
random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last,
#ifndef _LIBCPP_CXX03_LANG
_RandomNumberGenerator&& __rand)
#else
_RandomNumberGenerator& __rand)
#endif
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __d = __last - __first;
if (__d > 1)
{
for (--__last; __first < __last; ++__first, (void) --__d)
{
difference_type __i = __rand(__d);
if (__i != difference_type(0))
swap(*__first, *(__first + __i));
}
}
}
#endif
template<class _RandomAccessIterator, class _UniformRandomNumberGenerator>
void shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last,
_UniformRandomNumberGenerator&& __g)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef uniform_int_distribution<ptrdiff_t> _Dp;
typedef typename _Dp::param_type _Pp;
difference_type __d = __last - __first;
if (__d > 1)
{
_Dp __uid;
for (--__last, (void) --__d; __first < __last; ++__first, (void) --__d)
{
difference_type __i = __uid(__g, _Pp(0, __d));
if (__i != difference_type(0))
swap(*__first, *(__first + __i));
}
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SHUFFLE_H

libcxx/include/__algorithm/sift_down.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SIFT_DOWN_H
#define _LIBCPP___ALGORITHM_SIFT_DOWN_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__sift_down(_RandomAccessIterator __first, _RandomAccessIterator /*__last*/,
_Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
_RandomAccessIterator __start)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
// left-child of __start is at 2 * __start + 1
// right-child of __start is at 2 * __start + 2
difference_type __child = __start - __first;
if (__len < 2 || (__len - 2) / 2 < __child)
return;
__child = 2 * __child + 1;
_RandomAccessIterator __child_i = __first + __child;
if ((__child + 1) < __len && __comp(*__child_i, *(__child_i + 1))) {
// right-child exists and is greater than left-child
++__child_i;
++__child;
}
// check if we are in heap-order
if (__comp(*__child_i, *__start))
// we are, __start is larger than it's largest child
return;
value_type __top(_VSTD::move(*__start));
do
{
// we are not in heap-order, swap the parent with its largest child
*__start = _VSTD::move(*__child_i);
__start = __child_i;
if ((__len - 2) / 2 < __child)
break;
// recompute the child based off of the updated parent
__child = 2 * __child + 1;
__child_i = __first + __child;
if ((__child + 1) < __len && __comp(*__child_i, *(__child_i + 1))) {
// right-child exists and is greater than left-child
++__child_i;
++__child;
}
// check if we are in heap-order
} while (!__comp(*__child_i, __top));
*__start = _VSTD::move(__top);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SIFT_DOWN_H

libcxx/include/__algorithm/sort.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SORT_H
#define _LIBCPP___ALGORITHM_SORT_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/min_element.h>
#include <__algorithm/partial_sort.h>
#include <__algorithm/unwrap_iter.h>
#include <memory>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// stable, 2-3 compares, 0-2 swaps
template <class _Compare, class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 unsigned
__sort3(_ForwardIterator __x, _ForwardIterator __y, _ForwardIterator __z, _Compare __c)
{
unsigned __r = 0;
if (!__c(*__y, *__x)) // if x <= y
{
if (!__c(*__z, *__y)) // if y <= z
return __r; // x <= y && y <= z
// x <= y && y > z
swap(*__y, *__z); // x <= z && y < z
__r = 1;
if (__c(*__y, *__x)) // if x > y
{
swap(*__x, *__y); // x < y && y <= z
__r = 2;
}
return __r; // x <= y && y < z
}
if (__c(*__z, *__y)) // x > y, if y > z
{
swap(*__x, *__z); // x < y && y < z
__r = 1;
return __r;
}
swap(*__x, *__y); // x > y && y <= z
__r = 1; // x < y && x <= z
if (__c(*__z, *__y)) // if y > z
{
swap(*__y, *__z); // x <= y && y < z
__r = 2;
}
return __r;
} // x <= y && y <= z
// stable, 3-6 compares, 0-5 swaps
template <class _Compare, class _ForwardIterator>
unsigned
__sort4(_ForwardIterator __x1, _ForwardIterator __x2, _ForwardIterator __x3,
_ForwardIterator __x4, _Compare __c)
{
unsigned __r = _VSTD::__sort3<_Compare>(__x1, __x2, __x3, __c);
if (__c(*__x4, *__x3))
{
swap(*__x3, *__x4);
++__r;
if (__c(*__x3, *__x2))
{
swap(*__x2, *__x3);
++__r;
if (__c(*__x2, *__x1))
{
swap(*__x1, *__x2);
++__r;
}
}
}
return __r;
}
// stable, 4-10 compares, 0-9 swaps
template <class _Compare, class _ForwardIterator>
_LIBCPP_HIDDEN
unsigned
__sort5(_ForwardIterator __x1, _ForwardIterator __x2, _ForwardIterator __x3,
_ForwardIterator __x4, _ForwardIterator __x5, _Compare __c)
{
unsigned __r = _VSTD::__sort4<_Compare>(__x1, __x2, __x3, __x4, __c);
if (__c(*__x5, *__x4))
{
swap(*__x4, *__x5);
++__r;
if (__c(*__x4, *__x3))
{
swap(*__x3, *__x4);
++__r;
if (__c(*__x3, *__x2))
{
swap(*__x2, *__x3);
++__r;
if (__c(*__x2, *__x1))
{
swap(*__x1, *__x2);
++__r;
}
}
}
}
return __r;
}
// Assumes size > 0
template <class _Compare, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__selection_sort(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
_BidirectionalIterator __lm1 = __last;
for (--__lm1; __first != __lm1; ++__first)
{
_BidirectionalIterator __i = _VSTD::min_element<_BidirectionalIterator,
typename add_lvalue_reference<_Compare>::type>
(__first, __last, __comp);
if (__i != __first)
swap(*__first, *__i);
}
}
template <class _Compare, class _BidirectionalIterator>
void
__insertion_sort(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
if (__first != __last)
{
_BidirectionalIterator __i = __first;
for (++__i; __i != __last; ++__i)
{
_BidirectionalIterator __j = __i;
value_type __t(_VSTD::move(*__j));
for (_BidirectionalIterator __k = __i; __k != __first && __comp(__t, *--__k); --__j)
*__j = _VSTD::move(*__k);
*__j = _VSTD::move(__t);
}
}
}
template <class _Compare, class _RandomAccessIterator>
void
__insertion_sort_3(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
_RandomAccessIterator __j = __first+2;
_VSTD::__sort3<_Compare>(__first, __first+1, __j, __comp);
for (_RandomAccessIterator __i = __j+1; __i != __last; ++__i)
{
if (__comp(*__i, *__j))
{
value_type __t(_VSTD::move(*__i));
_RandomAccessIterator __k = __j;
__j = __i;
do
{
*__j = _VSTD::move(*__k);
__j = __k;
} while (__j != __first && __comp(__t, *--__k));
*__j = _VSTD::move(__t);
}
__j = __i;
}
}
template <class _Compare, class _RandomAccessIterator>
bool
__insertion_sort_incomplete(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
switch (__last - __first)
{
case 0:
case 1:
return true;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return true;
case 3:
_VSTD::__sort3<_Compare>(__first, __first+1, --__last, __comp);
return true;
case 4:
_VSTD::__sort4<_Compare>(__first, __first+1, __first+2, --__last, __comp);
return true;
case 5:
_VSTD::__sort5<_Compare>(__first, __first+1, __first+2, __first+3, --__last, __comp);
return true;
}
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
_RandomAccessIterator __j = __first+2;
_VSTD::__sort3<_Compare>(__first, __first+1, __j, __comp);
const unsigned __limit = 8;
unsigned __count = 0;
for (_RandomAccessIterator __i = __j+1; __i != __last; ++__i)
{
if (__comp(*__i, *__j))
{
value_type __t(_VSTD::move(*__i));
_RandomAccessIterator __k = __j;
__j = __i;
do
{
*__j = _VSTD::move(*__k);
__j = __k;
} while (__j != __first && __comp(__t, *--__k));
*__j = _VSTD::move(__t);
if (++__count == __limit)
return ++__i == __last;
}
__j = __i;
}
return true;
}
template <class _Compare, class _BidirectionalIterator>
void
__insertion_sort_move(_BidirectionalIterator __first1, _BidirectionalIterator __last1,
typename iterator_traits<_BidirectionalIterator>::value_type* __first2, _Compare __comp)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
if (__first1 != __last1)
{
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__first2, __d);
value_type* __last2 = __first2;
::new ((void*)__last2) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
for (++__last2; ++__first1 != __last1; ++__last2)
{
value_type* __j2 = __last2;
value_type* __i2 = __j2;
if (__comp(*__first1, *--__i2))
{
::new ((void*)__j2) value_type(_VSTD::move(*__i2));
__d.template __incr<value_type>();
for (--__j2; __i2 != __first2 && __comp(*__first1, *--__i2); --__j2)
*__j2 = _VSTD::move(*__i2);
*__j2 = _VSTD::move(*__first1);
}
else
{
::new ((void*)__j2) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
}
}
__h.release();
}
}
template <class _Compare, class _RandomAccessIterator>
void
__sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
const difference_type __limit = is_trivially_copy_constructible<value_type>::value &&
is_trivially_copy_assignable<value_type>::value ? 30 : 6;
while (true)
{
__restart:
difference_type __len = __last - __first;
switch (__len)
{
case 0:
case 1:
return;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return;
case 3:
_VSTD::__sort3<_Compare>(__first, __first+1, --__last, __comp);
return;
case 4:
_VSTD::__sort4<_Compare>(__first, __first+1, __first+2, --__last, __comp);
return;
case 5:
_VSTD::__sort5<_Compare>(__first, __first+1, __first+2, __first+3, --__last, __comp);
return;
}
if (__len <= __limit)
{
_VSTD::__insertion_sort_3<_Compare>(__first, __last, __comp);
return;
}
// __len > 5
_RandomAccessIterator __m = __first;
_RandomAccessIterator __lm1 = __last;
--__lm1;
unsigned __n_swaps;
{
difference_type __delta;
if (__len >= 1000)
{
__delta = __len/2;
__m += __delta;
__delta /= 2;
__n_swaps = _VSTD::__sort5<_Compare>(__first, __first + __delta, __m, __m+__delta, __lm1, __comp);
}
else
{
__delta = __len/2;
__m += __delta;
__n_swaps = _VSTD::__sort3<_Compare>(__first, __m, __lm1, __comp);
}
}
// *__m is median
// partition [__first, __m) < *__m and *__m <= [__m, __last)
// (this inhibits tossing elements equivalent to __m around unnecessarily)
_RandomAccessIterator __i = __first;
_RandomAccessIterator __j = __lm1;
// j points beyond range to be tested, *__m is known to be <= *__lm1
// The search going up is known to be guarded but the search coming down isn't.
// Prime the downward search with a guard.
if (!__comp(*__i, *__m)) // if *__first == *__m
{
// *__first == *__m, *__first doesn't go in first part
// manually guard downward moving __j against __i
while (true)
{
if (__i == --__j)
{
// *__first == *__m, *__m <= all other elements
// Parition instead into [__first, __i) == *__first and *__first < [__i, __last)
++__i; // __first + 1
__j = __last;
if (!__comp(*__first, *--__j)) // we need a guard if *__first == *(__last-1)
{
while (true)
{
if (__i == __j)
return; // [__first, __last) all equivalent elements
if (__comp(*__first, *__i))
{
swap(*__i, *__j);
++__n_swaps;
++__i;
break;
}
++__i;
}
}
// [__first, __i) == *__first and *__first < [__j, __last) and __j == __last - 1
if (__i == __j)
return;
while (true)
{
while (!__comp(*__first, *__i))
++__i;
while (__comp(*__first, *--__j))
;
if (__i >= __j)
break;
swap(*__i, *__j);
++__n_swaps;
++__i;
}
// [__first, __i) == *__first and *__first < [__i, __last)
// The first part is sorted, sort the second part
// _VSTD::__sort<_Compare>(__i, __last, __comp);
__first = __i;
goto __restart;
}
if (__comp(*__j, *__m))
{
swap(*__i, *__j);
++__n_swaps;
break; // found guard for downward moving __j, now use unguarded partition
}
}
}
// It is known that *__i < *__m
++__i;
// j points beyond range to be tested, *__m is known to be <= *__lm1
// if not yet partitioned...
if (__i < __j)
{
// known that *(__i - 1) < *__m
// known that __i <= __m
while (true)
{
// __m still guards upward moving __i
while (__comp(*__i, *__m))
++__i;
// It is now known that a guard exists for downward moving __j
while (!__comp(*--__j, *__m))
;
if (__i > __j)
break;
swap(*__i, *__j);
++__n_swaps;
// It is known that __m != __j
// If __m just moved, follow it
if (__m == __i)
__m = __j;
++__i;
}
}
// [__first, __i) < *__m and *__m <= [__i, __last)
if (__i != __m && __comp(*__m, *__i))
{
swap(*__i, *__m);
++__n_swaps;
}
// [__first, __i) < *__i and *__i <= [__i+1, __last)
// If we were given a perfect partition, see if insertion sort is quick...
if (__n_swaps == 0)
{
bool __fs = _VSTD::__insertion_sort_incomplete<_Compare>(__first, __i, __comp);
if (_VSTD::__insertion_sort_incomplete<_Compare>(__i+1, __last, __comp))
{
if (__fs)
return;
__last = __i;
continue;
}
else
{
if (__fs)
{
__first = ++__i;
continue;
}
}
}
// sort smaller range with recursive call and larger with tail recursion elimination
if (__i - __first < __last - __i)
{
_VSTD::__sort<_Compare>(__first, __i, __comp);
// _VSTD::__sort<_Compare>(__i+1, __last, __comp);
__first = ++__i;
}
else
{
_VSTD::__sort<_Compare>(__i+1, __last, __comp);
// _VSTD::__sort<_Compare>(__first, __i, __comp);
__last = __i;
}
}
}
template <class _Compare, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
void
__sort(_Tp** __first, _Tp** __last, __less<_Tp*>&)
{
__less<uintptr_t> __comp;
_VSTD::__sort<__less<uintptr_t>&, uintptr_t*>((uintptr_t*)__first, (uintptr_t*)__last, __comp);
}
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<char>&, char*>(char*, char*, __less<char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<wchar_t>&, wchar_t*>(wchar_t*, wchar_t*, __less<wchar_t>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<signed char>&, signed char*>(signed char*, signed char*, __less<signed char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned char>&, unsigned char*>(unsigned char*, unsigned char*, __less<unsigned char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<short>&, short*>(short*, short*, __less<short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned short>&, unsigned short*>(unsigned short*, unsigned short*, __less<unsigned short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<int>&, int*>(int*, int*, __less<int>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned>&, unsigned*>(unsigned*, unsigned*, __less<unsigned>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<long>&, long*>(long*, long*, __less<long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned long>&, unsigned long*>(unsigned long*, unsigned long*, __less<unsigned long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<long long>&, long long*>(long long*, long long*, __less<long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, __less<unsigned long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<float>&, float*>(float*, float*, __less<float>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<double>&, double*>(double*, double*, __less<double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<long double>&, long double*>(long double*, long double*, __less<long double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<char>&, char*>(char*, char*, __less<char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<wchar_t>&, wchar_t*>(wchar_t*, wchar_t*, __less<wchar_t>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<signed char>&, signed char*>(signed char*, signed char*, __less<signed char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned char>&, unsigned char*>(unsigned char*, unsigned char*, __less<unsigned char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<short>&, short*>(short*, short*, __less<short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned short>&, unsigned short*>(unsigned short*, unsigned short*, __less<unsigned short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<int>&, int*>(int*, int*, __less<int>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned>&, unsigned*>(unsigned*, unsigned*, __less<unsigned>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<long>&, long*>(long*, long*, __less<long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned long>&, unsigned long*>(unsigned long*, unsigned long*, __less<unsigned long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<long long>&, long long*>(long long*, long long*, __less<long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, __less<unsigned long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<float>&, float*>(float*, float*, __less<float>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<double>&, double*>(double*, double*, __less<double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<long double>&, long double*>(long double*, long double*, __less<long double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS unsigned __sort5<__less<long double>&, long double*>(long double*, long double*, long double*, long double*, long double*, __less<long double>&))
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
if (__libcpp_is_constant_evaluated()) {
_VSTD::__partial_sort<_Comp_ref>(__first, __last, __last, _Comp_ref(__comp));
} else {
_VSTD::__sort<_Comp_ref>(_VSTD::__unwrap_iter(__first), _VSTD::__unwrap_iter(__last), _Comp_ref(__comp));
}
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::sort(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SORT_H

libcxx/include/__algorithm/sort_heap.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_SORT_HEAP_H
#define _LIBCPP___ALGORITHM_SORT_HEAP_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/pop_heap.h>
#include <__iterator/iterator_traits.h>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 void
__sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
for (difference_type __n = __last - __first; __n > 1; --__last, (void) --__n)
_VSTD::__pop_heap<_Compare>(__first, __last, __comp, __n);
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__sort_heap<_Comp_ref>(__first, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::sort_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_SORT_HEAP_H

libcxx/include/__algorithm/stable_partition.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_STABLE_PARTITION_H
#define _LIBCPP___ALGORITHM_STABLE_PARTITION_H
#include <__config>
#include <__algorithm/rotate.h>
#include <__iterator/iterator_traits.h>
#include <memory>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Predicate, class _ForwardIterator, class _Distance, class _Pair>
_ForwardIterator
__stable_partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred,
_Distance __len, _Pair __p, forward_iterator_tag __fit)
{
// *__first is known to be false
// __len >= 1
if (__len == 1)
return __first;
if (__len == 2)
{
_ForwardIterator __m = __first;
if (__pred(*++__m))
{
swap(*__first, *__m);
return __m;
}
return __first;
}
if (__len <= __p.second)
{ // The buffer is big enough to use
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__p.first, __d);
// Move the falses into the temporary buffer, and the trues to the front of the line
// Update __first to always point to the end of the trues
value_type* __t = __p.first;
::new ((void*)__t) value_type(_VSTD::move(*__first));
__d.template __incr<value_type>();
++__t;
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (__pred(*__i))
{
*__first = _VSTD::move(*__i);
++__first;
}
else
{
::new ((void*)__t) value_type(_VSTD::move(*__i));
__d.template __incr<value_type>();
++__t;
}
}
// All trues now at start of range, all falses in buffer
// Move falses back into range, but don't mess up __first which points to first false
__i = __first;
for (value_type* __t2 = __p.first; __t2 < __t; ++__t2, (void) ++__i)
*__i = _VSTD::move(*__t2);
// __h destructs moved-from values out of the temp buffer, but doesn't deallocate buffer
return __first;
}
// Else not enough buffer, do in place
// __len >= 3
_ForwardIterator __m = __first;
_Distance __len2 = __len / 2; // __len2 >= 2
_VSTD::advance(__m, __len2);
// recurse on [__first, __m), *__first know to be false
// F?????????????????
// f m l
typedef typename add_lvalue_reference<_Predicate>::type _PredRef;
_ForwardIterator __first_false = _VSTD::__stable_partition<_PredRef>(__first, __m, __pred, __len2, __p, __fit);
// TTTFFFFF??????????
// f ff m l
// recurse on [__m, __last], except increase __m until *(__m) is false, *__last know to be true
_ForwardIterator __m1 = __m;
_ForwardIterator __second_false = __last;
_Distance __len_half = __len - __len2;
while (__pred(*__m1))
{
if (++__m1 == __last)
goto __second_half_done;
--__len_half;
}
// TTTFFFFFTTTF??????
// f ff m m1 l
__second_false = _VSTD::__stable_partition<_PredRef>(__m1, __last, __pred, __len_half, __p, __fit);
__second_half_done:
// TTTFFFFFTTTTTFFFFF
// f ff m sf l
return _VSTD::rotate(__first_false, __m, __second_false);
// TTTTTTTTFFFFFFFFFF
// |
}
template <class _Predicate, class _ForwardIterator>
_ForwardIterator
__stable_partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred,
forward_iterator_tag)
{
const unsigned __alloc_limit = 3; // might want to make this a function of trivial assignment
// Either prove all true and return __first or point to first false
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
// We now have a reduced range [__first, __last)
// *__first is known to be false
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
difference_type __len = _VSTD::distance(__first, __last);
pair<value_type*, ptrdiff_t> __p(0, 0);
unique_ptr<value_type, __return_temporary_buffer> __h;
if (__len >= __alloc_limit)
{
__p = _VSTD::get_temporary_buffer<value_type>(__len);
__h.reset(__p.first);
}
return _VSTD::__stable_partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, __len, __p, forward_iterator_tag());
}
template <class _Predicate, class _BidirectionalIterator, class _Distance, class _Pair>
_BidirectionalIterator
__stable_partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred,
_Distance __len, _Pair __p, bidirectional_iterator_tag __bit)
{
// *__first is known to be false
// *__last is known to be true
// __len >= 2
if (__len == 2)
{
swap(*__first, *__last);
return __last;
}
if (__len == 3)
{
_BidirectionalIterator __m = __first;
if (__pred(*++__m))
{
swap(*__first, *__m);
swap(*__m, *__last);
return __last;
}
swap(*__m, *__last);
swap(*__first, *__m);
return __m;
}
if (__len <= __p.second)
{ // The buffer is big enough to use
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__p.first, __d);
// Move the falses into the temporary buffer, and the trues to the front of the line
// Update __first to always point to the end of the trues
value_type* __t = __p.first;
::new ((void*)__t) value_type(_VSTD::move(*__first));
__d.template __incr<value_type>();
++__t;
_BidirectionalIterator __i = __first;
while (++__i != __last)
{
if (__pred(*__i))
{
*__first = _VSTD::move(*__i);
++__first;
}
else
{
::new ((void*)__t) value_type(_VSTD::move(*__i));
__d.template __incr<value_type>();
++__t;
}
}
// move *__last, known to be true
*__first = _VSTD::move(*__i);
__i = ++__first;
// All trues now at start of range, all falses in buffer
// Move falses back into range, but don't mess up __first which points to first false
for (value_type* __t2 = __p.first; __t2 < __t; ++__t2, (void) ++__i)
*__i = _VSTD::move(*__t2);
// __h destructs moved-from values out of the temp buffer, but doesn't deallocate buffer
return __first;
}
// Else not enough buffer, do in place
// __len >= 4
_BidirectionalIterator __m = __first;
_Distance __len2 = __len / 2; // __len2 >= 2
_VSTD::advance(__m, __len2);
// recurse on [__first, __m-1], except reduce __m-1 until *(__m-1) is true, *__first know to be false
// F????????????????T
// f m l
_BidirectionalIterator __m1 = __m;
_BidirectionalIterator __first_false = __first;
_Distance __len_half = __len2;
while (!__pred(*--__m1))
{
if (__m1 == __first)
goto __first_half_done;
--__len_half;
}
// F???TFFF?????????T
// f m1 m l
typedef typename add_lvalue_reference<_Predicate>::type _PredRef;
__first_false = _VSTD::__stable_partition<_PredRef>(__first, __m1, __pred, __len_half, __p, __bit);
__first_half_done:
// TTTFFFFF?????????T
// f ff m l
// recurse on [__m, __last], except increase __m until *(__m) is false, *__last know to be true
__m1 = __m;
_BidirectionalIterator __second_false = __last;
++__second_false;
__len_half = __len - __len2;
while (__pred(*__m1))
{
if (++__m1 == __last)
goto __second_half_done;
--__len_half;
}
// TTTFFFFFTTTF?????T
// f ff m m1 l
__second_false = _VSTD::__stable_partition<_PredRef>(__m1, __last, __pred, __len_half, __p, __bit);
__second_half_done:
// TTTFFFFFTTTTTFFFFF
// f ff m sf l
return _VSTD::rotate(__first_false, __m, __second_false);
// TTTTTTTTFFFFFFFFFF
// |
}
template <class _Predicate, class _BidirectionalIterator>
_BidirectionalIterator
__stable_partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred,
bidirectional_iterator_tag)
{
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
const difference_type __alloc_limit = 4; // might want to make this a function of trivial assignment
// Either prove all true and return __first or point to first false
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
// __first points to first false, everything prior to __first is already set.
// Either prove [__first, __last) is all false and return __first, or point __last to last true
do
{
if (__first == --__last)
return __first;
} while (!__pred(*__last));
// We now have a reduced range [__first, __last]
// *__first is known to be false
// *__last is known to be true
// __len >= 2
difference_type __len = _VSTD::distance(__first, __last) + 1;
pair<value_type*, ptrdiff_t> __p(0, 0);
unique_ptr<value_type, __return_temporary_buffer> __h;
if (__len >= __alloc_limit)
{
__p = _VSTD::get_temporary_buffer<value_type>(__len);
__h.reset(__p.first);
}
return _VSTD::__stable_partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, __len, __p, bidirectional_iterator_tag());
}
template <class _ForwardIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY
_ForwardIterator
stable_partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
return _VSTD::__stable_partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, typename iterator_traits<_ForwardIterator>::iterator_category());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_STABLE_PARTITION_H

libcxx/include/__algorithm/stable_sort.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_STABLE_SORT_H
#define _LIBCPP___ALGORITHM_STABLE_SORT_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/inplace_merge.h>
#include <__algorithm/sort.h>
#include <__iterator/iterator_traits.h>
#include <memory>
#include <type_traits> // swap
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2>
void
__merge_move_construct(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
typename iterator_traits<_InputIterator1>::value_type* __result, _Compare __comp)
{
typedef typename iterator_traits<_InputIterator1>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__result, __d);
for (; true; ++__result)
{
if (__first1 == __last1)
{
for (; __first2 != __last2; ++__first2, ++__result, (void)__d.template __incr<value_type>())
::new ((void*)__result) value_type(_VSTD::move(*__first2));
__h.release();
return;
}
if (__first2 == __last2)
{
for (; __first1 != __last1; ++__first1, ++__result, (void)__d.template __incr<value_type>())
::new ((void*)__result) value_type(_VSTD::move(*__first1));
__h.release();
return;
}
if (__comp(*__first2, *__first1))
{
::new ((void*)__result) value_type(_VSTD::move(*__first2));
__d.template __incr<value_type>();
++__first2;
}
else
{
::new ((void*)__result) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
++__first1;
}
}
}
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
void
__merge_move_assign(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
_OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
{
for (; __first1 != __last1; ++__first1, (void) ++__result)
*__result = _VSTD::move(*__first1);
return;
}
if (__comp(*__first2, *__first1))
{
*__result = _VSTD::move(*__first2);
++__first2;
}
else
{
*__result = _VSTD::move(*__first1);
++__first1;
}
}
for (; __first2 != __last2; ++__first2, (void) ++__result)
*__result = _VSTD::move(*__first2);
}
template <class _Compare, class _RandomAccessIterator>
void
__stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
typename iterator_traits<_RandomAccessIterator>::value_type* __buff, ptrdiff_t __buff_size);
template <class _Compare, class _RandomAccessIterator>
void
__stable_sort_move(_RandomAccessIterator __first1, _RandomAccessIterator __last1, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
typename iterator_traits<_RandomAccessIterator>::value_type* __first2)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
switch (__len)
{
case 0:
return;
case 1:
::new ((void*)__first2) value_type(_VSTD::move(*__first1));
return;
case 2:
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h2(__first2, __d);
if (__comp(*--__last1, *__first1))
{
::new ((void*)__first2) value_type(_VSTD::move(*__last1));
__d.template __incr<value_type>();
++__first2;
::new ((void*)__first2) value_type(_VSTD::move(*__first1));
}
else
{
::new ((void*)__first2) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
++__first2;
::new ((void*)__first2) value_type(_VSTD::move(*__last1));
}
__h2.release();
return;
}
if (__len <= 8)
{
_VSTD::__insertion_sort_move<_Compare>(__first1, __last1, __first2, __comp);
return;
}
typename iterator_traits<_RandomAccessIterator>::difference_type __l2 = __len / 2;
_RandomAccessIterator __m = __first1 + __l2;
_VSTD::__stable_sort<_Compare>(__first1, __m, __comp, __l2, __first2, __l2);
_VSTD::__stable_sort<_Compare>(__m, __last1, __comp, __len - __l2, __first2 + __l2, __len - __l2);
_VSTD::__merge_move_construct<_Compare>(__first1, __m, __m, __last1, __first2, __comp);
}
template <class _Tp>
struct __stable_sort_switch
{
static const unsigned value = 128*is_trivially_copy_assignable<_Tp>::value;
};
template <class _Compare, class _RandomAccessIterator>
void
__stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
typename iterator_traits<_RandomAccessIterator>::value_type* __buff, ptrdiff_t __buff_size)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
switch (__len)
{
case 0:
case 1:
return;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return;
}
if (__len <= static_cast<difference_type>(__stable_sort_switch<value_type>::value))
{
_VSTD::__insertion_sort<_Compare>(__first, __last, __comp);
return;
}
typename iterator_traits<_RandomAccessIterator>::difference_type __l2 = __len / 2;
_RandomAccessIterator __m = __first + __l2;
if (__len <= __buff_size)
{
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h2(__buff, __d);
_VSTD::__stable_sort_move<_Compare>(__first, __m, __comp, __l2, __buff);
__d.__set(__l2, (value_type*)nullptr);
_VSTD::__stable_sort_move<_Compare>(__m, __last, __comp, __len - __l2, __buff + __l2);
__d.__set(__len, (value_type*)nullptr);
_VSTD::__merge_move_assign<_Compare>(__buff, __buff + __l2, __buff + __l2, __buff + __len, __first, __comp);
// _VSTD::__merge<_Compare>(move_iterator<value_type*>(__buff),
// move_iterator<value_type*>(__buff + __l2),
// move_iterator<_RandomAccessIterator>(__buff + __l2),
// move_iterator<_RandomAccessIterator>(__buff + __len),
// __first, __comp);
return;
}
_VSTD::__stable_sort<_Compare>(__first, __m, __comp, __l2, __buff, __buff_size);
_VSTD::__stable_sort<_Compare>(__m, __last, __comp, __len - __l2, __buff, __buff_size);
_VSTD::__inplace_merge<_Compare>(__first, __m, __last, __comp, __l2, __len - __l2, __buff, __buff_size);
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY
void
stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __len = __last - __first;
pair<value_type*, ptrdiff_t> __buf(0, 0);
unique_ptr<value_type, __return_temporary_buffer> __h;
if (__len > static_cast<difference_type>(__stable_sort_switch<value_type>::value))
{
__buf = _VSTD::get_temporary_buffer<value_type>(__len);
__h.reset(__buf.first);
}
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__stable_sort<_Comp_ref>(__first, __last, __comp, __len, __buf.first, __buf.second);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::stable_sort(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_STABLE_SORT_H

libcxx/include/__algorithm/transform.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_TRANSFORM_H
#define _LIBCPP___ALGORITHM_TRANSFORM_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _OutputIterator, class _UnaryOperation>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
transform(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __op)
{
for (; __first != __last; ++__first, (void) ++__result)
*__result = __op(*__first);
return __result;
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _BinaryOperation>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
transform(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2,
_OutputIterator __result, _BinaryOperation __binary_op)
{
for (; __first1 != __last1; ++__first1, (void) ++__first2, ++__result)
*__result = __binary_op(*__first1, *__first2);
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_TRANSFORM_H

libcxx/include/__algorithm/unique.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_UNIQUE_H
#define _LIBCPP___ALGORITHM_UNIQUE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/adjacent_find.h>
#include <__iterator/iterator_traits.h>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// unique
template <class _ForwardIterator, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
unique(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred)
{
__first = _VSTD::adjacent_find<_ForwardIterator, typename add_lvalue_reference<_BinaryPredicate>::type>
(__first, __last, __pred);
if (__first != __last)
{
// ... a a ? ...
// f i
_ForwardIterator __i = __first;
for (++__i; ++__i != __last;)
if (!__pred(*__first, *__i))
*++__first = _VSTD::move(*__i);
++__first;
}
return __first;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
unique(_ForwardIterator __first, _ForwardIterator __last)
{
typedef typename iterator_traits<_ForwardIterator>::value_type __v;
return _VSTD::unique(__first, __last, __equal_to<__v>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_UNIQUE_H

libcxx/include/__algorithm/unique_copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_UNIQUE_COPY_H
#define _LIBCPP___ALGORITHM_UNIQUE_COPY_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <utility>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BinaryPredicate, class _InputIterator, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred,
input_iterator_tag, output_iterator_tag)
{
if (__first != __last)
{
typename iterator_traits<_InputIterator>::value_type __t(*__first);
*__result = __t;
++__result;
while (++__first != __last)
{
if (!__pred(__t, *__first))
{
__t = *__first;
*__result = __t;
++__result;
}
}
}
return __result;
}
template <class _BinaryPredicate, class _ForwardIterator, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__unique_copy(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result, _BinaryPredicate __pred,
forward_iterator_tag, output_iterator_tag)
{
if (__first != __last)
{
_ForwardIterator __i = __first;
*__result = *__i;
++__result;
while (++__first != __last)
{
if (!__pred(*__i, *__first))
{
*__result = *__first;
++__result;
__i = __first;
}
}
}
return __result;
}
template <class _BinaryPredicate, class _InputIterator, class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__unique_copy(_InputIterator __first, _InputIterator __last, _ForwardIterator __result, _BinaryPredicate __pred,
input_iterator_tag, forward_iterator_tag)
{
if (__first != __last)
{
*__result = *__first;
while (++__first != __last)
if (!__pred(*__result, *__first))
*++__result = *__first;
++__result;
}
return __result;
}
template <class _InputIterator, class _OutputIterator, class _BinaryPredicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred)
{
return _VSTD::__unique_copy<typename add_lvalue_reference<_BinaryPredicate>::type>
(__first, __last, __result, __pred,
typename iterator_traits<_InputIterator>::iterator_category(),
typename iterator_traits<_OutputIterator>::iterator_category());
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
typedef typename iterator_traits<_InputIterator>::value_type __v;
return _VSTD::unique_copy(__first, __last, __result, __equal_to<__v>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_UNIQUE_COPY_H

libcxx/include/__algorithm/unwrap_iter.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_UNWRAP_ITER_H
#define _LIBCPP___ALGORITHM_UNWRAP_ITER_H
#include <__config>
#include <iterator>
#include <__memory/pointer_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// The job of __unwrap_iter is to lower contiguous iterators (such as
// vector<T>::iterator) into pointers, to reduce the number of template
// instantiations and to enable pointer-based optimizations e.g. in std::copy.
// For iterators that are not contiguous, it must be a no-op.
// In debug mode, we don't do this.
//
// __unwrap_iter is non-constexpr for user-defined iterators whose
// `to_address` and/or `operator->` is non-constexpr. This is okay; but we
// try to avoid doing __unwrap_iter in constant-evaluated contexts anyway.
//
// Some algorithms (e.g. std::copy, but not std::sort) need to convert an
// "unwrapped" result back into a contiguous iterator. Since contiguous iterators
// are random-access, we can do this portably using iterator arithmetic; this
// is the job of __rewrap_iter.
template <class _Iter, bool = __is_cpp17_contiguous_iterator<_Iter>::value>
struct __unwrap_iter_impl {
static _LIBCPP_CONSTEXPR _Iter
__apply(_Iter __i) _NOEXCEPT {
return __i;
}
};
#if _LIBCPP_DEBUG_LEVEL < 2
template <class _Iter>
struct __unwrap_iter_impl<_Iter, true> {
static _LIBCPP_CONSTEXPR decltype(_VSTD::__to_address(declval<_Iter>()))
__apply(_Iter __i) _NOEXCEPT {
return _VSTD::__to_address(__i);
}
};
#endif // _LIBCPP_DEBUG_LEVEL < 2
template<class _Iter, class _Impl = __unwrap_iter_impl<_Iter> >
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
decltype(_Impl::__apply(declval<_Iter>()))
__unwrap_iter(_Iter __i) _NOEXCEPT
{
return _Impl::__apply(__i);
}
template<class _OrigIter>
_OrigIter __rewrap_iter(_OrigIter, _OrigIter __result)
{
return __result;
}
template<class _OrigIter, class _UnwrappedIter>
_OrigIter __rewrap_iter(_OrigIter __first, _UnwrappedIter __result)
{
// Precondition: __result is reachable from __first
// Precondition: _OrigIter is a contiguous iterator
return __first + (__result - _VSTD::__unwrap_iter(__first));
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_UNWRAP_ITER_H

libcxx/include/__algorithm/upper_bound.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___ALGORITHM_UPPER_BOUND_H
#define _LIBCPP___ALGORITHM_UPPER_BOUND_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/half_positive.h>
#include <iterator>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _ForwardIterator, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__comp(__value_, *__m))
__len = __l2;
else
{
__first = ++__m;
__len -= __l2 + 1;
}
}
return __first;
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename add_lvalue_reference<_Compare>::type _Comp_ref;
return _VSTD::__upper_bound<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::upper_bound(__first, __last, __value_,
__less<_Tp, typename iterator_traits<_ForwardIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_UPPER_BOUND_H

libcxx/include/__functional/search.h

  • This file was added.
// -*- 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 _LIBCPP___FUNCTIONAL___SEARCH_H
#define _LIBCPP___FUNCTIONAL___SEARCH_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <utility>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2>
pair<_ForwardIterator1, _ForwardIterator1>
_LIBCPP_CONSTEXPR_AFTER_CXX11 __search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred, forward_iterator_tag, forward_iterator_tag) {
if (__first2 == __last2)
return _VSTD::make_pair(__first1, __first1); // Everything matches an empty sequence
while (true) {
// Find first element in sequence 1 that matchs *__first2, with a mininum of loop checks
while (true) {
if (__first1 == __last1) // return __last1 if no element matches *__first2
return _VSTD::make_pair(__last1, __last1);
if (__pred(*__first1, *__first2))
break;
++__first1;
}
// *__first1 matches *__first2, now match elements after here
_ForwardIterator1 __m1 = __first1;
_ForwardIterator2 __m2 = __first2;
while (true) {
if (++__m2 == __last2) // If pattern exhausted, __first1 is the answer (works for 1 element pattern)
return _VSTD::make_pair(__first1, __m1);
if (++__m1 == __last1) // Otherwise if source exhaused, pattern not found
return _VSTD::make_pair(__last1, __last1);
if (!__pred(*__m1, *__m2)) // if there is a mismatch, restart with a new __first1
{
++__first1;
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX11 pair<_RandomAccessIterator1, _RandomAccessIterator1>
__search(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
_RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag,
random_access_iterator_tag) {
typedef typename iterator_traits<_RandomAccessIterator1>::difference_type _D1;
typedef typename iterator_traits<_RandomAccessIterator2>::difference_type _D2;
// Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern
const _D2 __len2 = __last2 - __first2;
if (__len2 == 0)
return _VSTD::make_pair(__first1, __first1);
const _D1 __len1 = __last1 - __first1;
if (__len1 < __len2)
return _VSTD::make_pair(__last1, __last1);
const _RandomAccessIterator1 __s = __last1 - (__len2 - 1); // Start of pattern match can't go beyond here
while (true) {
while (true) {
if (__first1 == __s)
return _VSTD::make_pair(__last1, __last1);
if (__pred(*__first1, *__first2))
break;
++__first1;
}
_RandomAccessIterator1 __m1 = __first1;
_RandomAccessIterator2 __m2 = __first2;
while (true) {
if (++__m2 == __last2)
return _VSTD::make_pair(__first1, __first1 + __len2);
++__m1; // no need to check range on __m1 because __s guarantees we have enough source
if (!__pred(*__m1, *__m2)) {
++__first1;
break;
}
}
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___FUNCTIONAL___SEARCH_H

libcxx/include/__memory/temporary_buffer.h

Show First 20 Lines • Show All 70 Lines • ▼ Show 20 Lines
template <class _Tp> template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY inline _LIBCPP_INLINE_VISIBILITY
void return_temporary_buffer(_Tp* __p) _NOEXCEPT void return_temporary_buffer(_Tp* __p) _NOEXCEPT
{ {
_VSTD::__libcpp_deallocate_unsized((void*)__p, _LIBCPP_ALIGNOF(_Tp)); _VSTD::__libcpp_deallocate_unsized((void*)__p, _LIBCPP_ALIGNOF(_Tp));
} }
struct __return_temporary_buffer
{
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) const {_VSTD::return_temporary_buffer(__p);}
};
_LIBCPP_END_NAMESPACE_STD _LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS _LIBCPP_POP_MACROS
#endif // _LIBCPP___MEMORY_TEMPORARY_BUFFER_H #endif // _LIBCPP___MEMORY_TEMPORARY_BUFFER_H

libcxx/include/__random/uniform_int_distribution.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// 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 _LIBCPP___RANDOM_UNIFORM_INT_DISTRIBUTION_H
#define _LIBCPP___RANDOM_UNIFORM_INT_DISTRIBUTION_H
#include <__bits>
#include <__config>
#include <cstddef>
#include <cstdint>
#include <iosfwd>
#include <limits>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// __independent_bits_engine
template <unsigned long long _Xp, size_t _Rp>
struct __log2_imp
{
static const size_t value = _Xp & ((unsigned long long)(1) << _Rp) ? _Rp
: __log2_imp<_Xp, _Rp - 1>::value;
};
template <unsigned long long _Xp>
struct __log2_imp<_Xp, 0>
{
static const size_t value = 0;
};
template <size_t _Rp>
struct __log2_imp<0, _Rp>
{
static const size_t value = _Rp + 1;
};
template <class _UIntType, _UIntType _Xp>
struct __log2
{
static const size_t value = __log2_imp<_Xp,
sizeof(_UIntType) * __CHAR_BIT__ - 1>::value;
};
template<class _Engine, class _UIntType>
class __independent_bits_engine
{
public:
// types
typedef _UIntType result_type;
private:
typedef typename _Engine::result_type _Engine_result_type;
typedef typename conditional
<
sizeof(_Engine_result_type) <= sizeof(result_type),
result_type,
_Engine_result_type
>::type _Working_result_type;
_Engine& __e_;
size_t __w_;
size_t __w0_;
size_t __n_;
size_t __n0_;
_Working_result_type __y0_;
_Working_result_type __y1_;
_Engine_result_type __mask0_;
_Engine_result_type __mask1_;
#ifdef _LIBCPP_CXX03_LANG
static const _Working_result_type _Rp = _Engine::_Max - _Engine::_Min
+ _Working_result_type(1);
#else
static _LIBCPP_CONSTEXPR const _Working_result_type _Rp = _Engine::max() - _Engine::min()
+ _Working_result_type(1);
#endif
static _LIBCPP_CONSTEXPR const size_t __m = __log2<_Working_result_type, _Rp>::value;
static _LIBCPP_CONSTEXPR const size_t _WDt = numeric_limits<_Working_result_type>::digits;
static _LIBCPP_CONSTEXPR const size_t _EDt = numeric_limits<_Engine_result_type>::digits;
public:
// constructors and seeding functions
__independent_bits_engine(_Engine& __e, size_t __w);
// generating functions
result_type operator()() {return __eval(integral_constant<bool, _Rp != 0>());}
private:
result_type __eval(false_type);
result_type __eval(true_type);
};
template<class _Engine, class _UIntType>
__independent_bits_engine<_Engine, _UIntType>
::__independent_bits_engine(_Engine& __e, size_t __w)
: __e_(__e),
__w_(__w)
{
__n_ = __w_ / __m + (__w_ % __m != 0);
__w0_ = __w_ / __n_;
if (_Rp == 0)
__y0_ = _Rp;
else if (__w0_ < _WDt)
__y0_ = (_Rp >> __w0_) << __w0_;
else
__y0_ = 0;
if (_Rp - __y0_ > __y0_ / __n_)
{
++__n_;
__w0_ = __w_ / __n_;
if (__w0_ < _WDt)
__y0_ = (_Rp >> __w0_) << __w0_;
else
__y0_ = 0;
}
__n0_ = __n_ - __w_ % __n_;
if (__w0_ < _WDt - 1)
__y1_ = (_Rp >> (__w0_ + 1)) << (__w0_ + 1);
else
__y1_ = 0;
__mask0_ = __w0_ > 0 ? _Engine_result_type(~0) >> (_EDt - __w0_) :
_Engine_result_type(0);
__mask1_ = __w0_ < _EDt - 1 ?
_Engine_result_type(~0) >> (_EDt - (__w0_ + 1)) :
_Engine_result_type(~0);
}
template<class _Engine, class _UIntType>
inline
_UIntType
__independent_bits_engine<_Engine, _UIntType>::__eval(false_type)
{
return static_cast<result_type>(__e_() & __mask0_);
}
template<class _Engine, class _UIntType>
_UIntType
__independent_bits_engine<_Engine, _UIntType>::__eval(true_type)
{
const size_t _WRt = numeric_limits<result_type>::digits;
result_type _Sp = 0;
for (size_t __k = 0; __k < __n0_; ++__k)
{
_Engine_result_type __u;
do
{
__u = __e_() - _Engine::min();
} while (__u >= __y0_);
if (__w0_ < _WRt)
_Sp <<= __w0_;
else
_Sp = 0;
_Sp += __u & __mask0_;
}
for (size_t __k = __n0_; __k < __n_; ++__k)
{
_Engine_result_type __u;
do
{
__u = __e_() - _Engine::min();
} while (__u >= __y1_);
if (__w0_ < _WRt - 1)
_Sp <<= __w0_ + 1;
else
_Sp = 0;
_Sp += __u & __mask1_;
}
return _Sp;
}
template<class _IntType = int>
class uniform_int_distribution
{
public:
// types
typedef _IntType result_type;
class param_type
{
result_type __a_;
result_type __b_;
public:
typedef uniform_int_distribution distribution_type;
explicit param_type(result_type __a = 0,
result_type __b = numeric_limits<result_type>::max())
: __a_(__a), __b_(__b) {}
result_type a() const {return __a_;}
result_type b() const {return __b_;}
friend bool operator==(const param_type& __x, const param_type& __y)
{return __x.__a_ == __y.__a_ && __x.__b_ == __y.__b_;}
friend bool operator!=(const param_type& __x, const param_type& __y)
{return !(__x == __y);}
};
private:
param_type __p_;
public:
// constructors and reset functions
#ifndef _LIBCPP_CXX03_LANG
uniform_int_distribution() : uniform_int_distribution(0) {}
explicit uniform_int_distribution(
result_type __a, result_type __b = numeric_limits<result_type>::max())
: __p_(param_type(__a, __b)) {}
#else
explicit uniform_int_distribution(
result_type __a = 0,
result_type __b = numeric_limits<result_type>::max())
: __p_(param_type(__a, __b)) {}
#endif
explicit uniform_int_distribution(const param_type& __p) : __p_(__p) {}
void reset() {}
// generating functions
template<class _URNG> result_type operator()(_URNG& __g)
{return (*this)(__g, __p_);}
template<class _URNG> result_type operator()(_URNG& __g, const param_type& __p);
// property functions
result_type a() const {return __p_.a();}
result_type b() const {return __p_.b();}
param_type param() const {return __p_;}
void param(const param_type& __p) {__p_ = __p;}
result_type min() const {return a();}
result_type max() const {return b();}
friend bool operator==(const uniform_int_distribution& __x,
const uniform_int_distribution& __y)
{return __x.__p_ == __y.__p_;}
friend bool operator!=(const uniform_int_distribution& __x,
const uniform_int_distribution& __y)
{return !(__x == __y);}
};
template<class _IntType>
template<class _URNG>
typename uniform_int_distribution<_IntType>::result_type
uniform_int_distribution<_IntType>::operator()(_URNG& __g, const param_type& __p)
_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
{
typedef typename conditional<sizeof(result_type) <= sizeof(uint32_t),
uint32_t, uint64_t>::type _UIntType;
const _UIntType _Rp = _UIntType(__p.b()) - _UIntType(__p.a()) + _UIntType(1);
if (_Rp == 1)
return __p.a();
const size_t _Dt = numeric_limits<_UIntType>::digits;
typedef __independent_bits_engine<_URNG, _UIntType> _Eng;
if (_Rp == 0)
return static_cast<result_type>(_Eng(__g, _Dt)());
size_t __w = _Dt - __libcpp_clz(_Rp) - 1;
if ((_Rp & (numeric_limits<_UIntType>::max() >> (_Dt - __w))) != 0)
++__w;
_Eng __e(__g, __w);
_UIntType __u;
do
{
__u = __e();
} while (__u >= _Rp);
return static_cast<result_type>(__u + __p.a());
}
template <class _CharT, class _Traits, class _IT>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os,
const uniform_int_distribution<_IT>& __x)
{
__save_flags<_CharT, _Traits> __lx(__os);
typedef basic_ostream<_CharT, _Traits> _Ostream;
__os.flags(_Ostream::dec | _Ostream::left);
_CharT __sp = __os.widen(' ');
__os.fill(__sp);
return __os << __x.a() << __sp << __x.b();
}
template <class _CharT, class _Traits, class _IT>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is,
uniform_int_distribution<_IT>& __x)
{
typedef uniform_int_distribution<_IT> _Eng;
typedef typename _Eng::result_type result_type;
typedef typename _Eng::param_type param_type;
__save_flags<_CharT, _Traits> __lx(__is);
typedef basic_istream<_CharT, _Traits> _Istream;
__is.flags(_Istream::dec | _Istream::skipws);
result_type __a;
result_type __b;
__is >> __a >> __b;
if (!__is.fail())
__x.param(param_type(__a, __b));
return __is;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___RANDOM_UNIFORM_INT_DISTRIBUTION_H

libcxx/include/algorithm

Show First 20 Lines • Show All 639 Lines • ▼ Show 20 Lines
template <class BidirectionalIterator, class Compare> template <class BidirectionalIterator, class Compare>
constexpr bool // constexpr in C++20 constexpr bool // constexpr in C++20
prev_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp); prev_permutation(BidirectionalIterator first, BidirectionalIterator last, Compare comp);
} // std } // std
*/ */
#include <__config> #include <__config>
#include <__debug>
#include <__bits> // __libcpp_clz #include <__bits> // __libcpp_clz
#include <cstddef> #include <cstddef>
#include <cstring> #include <cstring>
#include <functional> #include <functional>
#include <initializer_list> #include <initializer_list>
#include <utility> // needed to provide swap_ranges.
#include <memory>
#include <iterator> #include <iterator>
#include <memory> #include <memory>
#include <type_traits> #include <type_traits>
#include <utility> // swap_ranges #include <utility> // swap_ranges
#include <version> #include <version>
#include <__debug> #include <__algorithm/adjacent_find.h>
#include <__algorithm/all_of.h>
#include <__algorithm/any_of.h>
QuuxplusoneUnsubmitted
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ReplyInline Actions

(A) Why are these few headers alphabetized and then the bulk of them (below) done... below?

(B) @cjdb wrote:

Note: during this change, I burned down all the includes, so this follows "include only and exactly what you use."

In D103330 @ldionne asked that this be done in a separate patch.

The important thing @ldionne was getting at in D103330 is Hyrum's Law. We need to make sure that we don't break any of libc++'s customers who might be relying on the fact e.g. "by including <algorithm>, I also receive all of <functional>." @zoecarver's change doesn't actually affect those customers AFAICT, because he's leaving the existing includes alone here (e.g. <algorithm> does still include <functional>).

However, @zoecarver, please do triple-check this PR to make sure that the top-level <algorithm> header still includes all the facilities it used to, and that the same is true for all other top-level publicly visible headers (e.g. <functional>, <iterator>, anything else that might have changed).

Quuxplusone: (A) Why are these few headers alphabetized and then the bulk of them (below) done... below?
zoecarverUnsubmitted
Done
ReplyInline Actions

(A) Why are these few headers alphabetized and then the bulk of them (below) done... below?

Arg. Sorry this came out of merging Chris' patch with mine. Will fix. (Come to think of it, I also need to update the cmake list.)

The important thing @ldionne was getting at in D103330 is Hyrum's Law. We need to make sure that we don't break any of libc++'s customers who might be relying on the fact e.g. "by including <algorithm>, I also receive all of <functional>." @zoecarver's change doesn't actually affect those customers AFAICT, because he's leaving the existing includes alone here (e.g. <algorithm> does still include <functional>).

However, @zoecarver, please do triple-check this PR to make sure that the top-level <algorithm> header still includes all the facilities it used to, and that the same is true for all other top-level publicly visible headers (e.g. <functional>, <iterator>, anything else that might have changed).

Yes. I haven't removed anything from <algorithm>.

zoecarver: > (A) Why are these few headers alphabetized and then the bulk of them (below) done... below?
#include <__algorithm/binary_search.h>
#include <__algorithm/clamp.h>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/copy.h>
#include <__algorithm/copy_backward.h>
#include <__algorithm/copy_if.h>
#include <__algorithm/copy_n.h>
#include <__algorithm/count.h>
#include <__algorithm/count_if.h>
#include <__algorithm/equal.h>
#include <__algorithm/equal_range.h>
#include <__algorithm/fill_n.h>
#include <__algorithm/fill.h>
#include <__algorithm/find.h>
#include <__algorithm/find_end.h>
#include <__algorithm/find_first_of.h>
#include <__algorithm/find_if.h>
#include <__algorithm/find_if_not.h>
#include <__algorithm/for_each.h>
#include <__algorithm/for_each_n.h>
#include <__algorithm/generate_n.h>
#include <__algorithm/generate.h>
#include <__algorithm/half_positive.h>
#include <__algorithm/includes.h>
#include <__algorithm/inplace_merge.h>
#include <__algorithm/is_heap.h>
#include <__algorithm/is_heap_until.h>
#include <__algorithm/is_partitioned.h>
#include <__algorithm/is_permutation.h>
#include <__algorithm/is_sorted.h>
#include <__algorithm/is_sorted_until.h>
#include <__algorithm/lexicographical_compare.h>
#include <__algorithm/lower_bound.h>
#include <__algorithm/make_heap.h>
#include <__algorithm/max.h>
#include <__algorithm/max_element.h>
#include <__algorithm/merge.h>
#include <__algorithm/min.h>
#include <__algorithm/min_element.h>
#include <__algorithm/minmax.h>
#include <__algorithm/minmax_element.h>
#include <__algorithm/mismatch.h>
#include <__algorithm/move.h>
#include <__algorithm/move_backward.h>
#include <__algorithm/next_permutation.h>
#include <__algorithm/none_of.h>
#include <__algorithm/nth_element.h>
#include <__algorithm/partial_sort.h>
#include <__algorithm/partial_sort_copy.h>
#include <__algorithm/partition.h>
#include <__algorithm/partition_copy.h>
#include <__algorithm/partition_point.h>
#include <__algorithm/pop_heap.h>
#include <__algorithm/prev_permutation.h>
#include <__algorithm/push_heap.h>
#include <__algorithm/remove.h>
#include <__algorithm/remove_copy.h>
#include <__algorithm/remove_copy_if.h>
#include <__algorithm/remove_if.h>
#include <__algorithm/replace.h>
#include <__algorithm/replace_copy.h>
#include <__algorithm/replace_copy_if.h>
#include <__algorithm/replace_if.h>
#include <__algorithm/reverse.h>
#include <__algorithm/reverse_copy.h>
#include <__algorithm/rotate.h>
#include <__algorithm/rotate_copy.h>
#include <__algorithm/sample.h>
#include <__algorithm/search.h>
#include <__algorithm/search_n.h>
#include <__algorithm/set_difference.h>
#include <__algorithm/set_intersection.h>
#include <__algorithm/set_symmetric_difference.h>
#include <__algorithm/set_union.h>
#include <__algorithm/shift_left.h>
#include <__algorithm/shift_right.h>
#include <__algorithm/shuffle.h>
#include <__algorithm/sift_down.h>
#include <__algorithm/sort.h>
#include <__algorithm/sort_heap.h>
#include <__algorithm/stable_partition.h>
#include <__algorithm/stable_sort.h>
#include <__algorithm/transform.h>
#include <__algorithm/unique_copy.h>
#include <__algorithm/unique.h>
#include <__algorithm/unwrap_iter.h>
#include <__algorithm/upper_bound.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header #pragma GCC system_header
#endif #endif
_LIBCPP_PUSH_MACROS _LIBCPP_PUSH_MACROS
#include <__undef_macros> #include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// I'd like to replace these with _VSTD::equal_to<void>, but can't because:
// * That only works with C++14 and later, and
// * We haven't included <functional> here.
template <class _T1, class _T2 = _T1>
struct __equal_to
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T1& __x, const _T2& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T2& __x, const _T1& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T2& __x, const _T2& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<_T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<const _T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<_T1, const _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1, class _T2 = _T1>
struct __less
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T2& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T2& __x, const _T1& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T2& __x, const _T2& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<_T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<const _T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<_T1, const _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
template <class _Predicate>
class __invert // invert the sense of a comparison
{
private:
_Predicate __p_;
public:
_LIBCPP_INLINE_VISIBILITY __invert() {}
_LIBCPP_INLINE_VISIBILITY
explicit __invert(_Predicate __p) : __p_(__p) {}
template <class _T1>
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _T1& __x) {return !__p_(__x);}
template <class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _T1& __x, const _T2& __y) {return __p_(__y, __x);}
};
// Perform division by two quickly for positive integers (llvm.org/PR39129)
template <typename _Integral>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
is_integral<_Integral>::value,
_Integral
>::type
__half_positive(_Integral __value)
{
return static_cast<_Integral>(static_cast<typename make_unsigned<_Integral>::type>(__value) / 2);
}
template <typename _Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
!is_integral<_Tp>::value,
_Tp
>::type
__half_positive(_Tp __value)
{
return __value / 2;
}
#ifdef _LIBCPP_DEBUG
template <class _Compare>
struct __debug_less
{
_Compare &__comp_;
_LIBCPP_CONSTEXPR_AFTER_CXX17
__debug_less(_Compare& __c) : __comp_(__c) {}
template <class _Tp, class _Up>
_LIBCPP_CONSTEXPR_AFTER_CXX17
bool operator()(const _Tp& __x, const _Up& __y)
{
bool __r = __comp_(__x, __y);
if (__r)
__do_compare_assert(0, __y, __x);
return __r;
}
template <class _Tp, class _Up>
_LIBCPP_CONSTEXPR_AFTER_CXX17
bool operator()(_Tp& __x, _Up& __y)
{
bool __r = __comp_(__x, __y);
if (__r)
__do_compare_assert(0, __y, __x);
return __r;
}
template <class _LHS, class _RHS>
_LIBCPP_CONSTEXPR_AFTER_CXX17
inline _LIBCPP_INLINE_VISIBILITY
decltype((void)declval<_Compare&>()(
declval<_LHS &>(), declval<_RHS &>()))
__do_compare_assert(int, _LHS & __l, _RHS & __r) {
_LIBCPP_ASSERT(!__comp_(__l, __r),
"Comparator does not induce a strict weak ordering");
}
template <class _LHS, class _RHS>
_LIBCPP_CONSTEXPR_AFTER_CXX17
inline _LIBCPP_INLINE_VISIBILITY
void __do_compare_assert(long, _LHS &, _RHS &) {}
};
#endif // _LIBCPP_DEBUG
template <class _Comp>
struct __comp_ref_type {
// Pass the comparator by lvalue reference. Or in debug mode, using a
// debugging wrapper that stores a reference.
#ifndef _LIBCPP_DEBUG
typedef typename add_lvalue_reference<_Comp>::type type;
#else
typedef __debug_less<_Comp> type;
#endif
};
// all_of
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
all_of(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (!__pred(*__first))
return false;
return true;
}
// any_of
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
any_of(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (__pred(*__first))
return true;
return false;
}
// none_of
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
none_of(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (__pred(*__first))
return false;
return true;
}
// for_each
template <class _InputIterator, class _Function>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_Function
for_each(_InputIterator __first, _InputIterator __last, _Function __f)
{
for (; __first != __last; ++__first)
__f(*__first);
return __f;
}
#if _LIBCPP_STD_VER > 14
// for_each_n
template <class _InputIterator, class _Size, class _Function>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_InputIterator
for_each_n(_InputIterator __first, _Size __orig_n, _Function __f)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
while (__n > 0)
{
__f(*__first);
++__first;
--__n;
}
return __first;
}
#endif
// find
template <class _InputIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_InputIterator
find(_InputIterator __first, _InputIterator __last, const _Tp& __value_)
{
for (; __first != __last; ++__first)
if (*__first == __value_)
break;
return __first;
}
// find_if
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_InputIterator
find_if(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (__pred(*__first))
break;
return __first;
}
// find_if_not
template<class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_InputIterator
find_if_not(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (!__pred(*__first))
break;
return __first;
}
// find_end
template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
__find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred,
forward_iterator_tag, forward_iterator_tag)
{
// modeled after search algorithm
_ForwardIterator1 __r = __last1; // __last1 is the "default" answer
if (__first2 == __last2)
return __r;
while (true)
{
while (true)
{
if (__first1 == __last1) // if source exhausted return last correct answer
return __r; // (or __last1 if never found)
if (__pred(*__first1, *__first2))
break;
++__first1;
}
// *__first1 matches *__first2, now match elements after here
_ForwardIterator1 __m1 = __first1;
_ForwardIterator2 __m2 = __first2;
while (true)
{
if (++__m2 == __last2)
{ // Pattern exhaused, record answer and search for another one
__r = __first1;
++__first1;
break;
}
if (++__m1 == __last1) // Source exhausted, return last answer
return __r;
if (!__pred(*__m1, *__m2)) // mismatch, restart with a new __first
{
++__first1;
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _BidirectionalIterator1, class _BidirectionalIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _BidirectionalIterator1
__find_end(_BidirectionalIterator1 __first1, _BidirectionalIterator1 __last1,
_BidirectionalIterator2 __first2, _BidirectionalIterator2 __last2, _BinaryPredicate __pred,
bidirectional_iterator_tag, bidirectional_iterator_tag)
{
// modeled after search algorithm (in reverse)
if (__first2 == __last2)
return __last1; // Everything matches an empty sequence
_BidirectionalIterator1 __l1 = __last1;
_BidirectionalIterator2 __l2 = __last2;
--__l2;
while (true)
{
// Find last element in sequence 1 that matchs *(__last2-1), with a mininum of loop checks
while (true)
{
if (__first1 == __l1) // return __last1 if no element matches *__first2
return __last1;
if (__pred(*--__l1, *__l2))
break;
}
// *__l1 matches *__l2, now match elements before here
_BidirectionalIterator1 __m1 = __l1;
_BidirectionalIterator2 __m2 = __l2;
while (true)
{
if (__m2 == __first2) // If pattern exhausted, __m1 is the answer (works for 1 element pattern)
return __m1;
if (__m1 == __first1) // Otherwise if source exhaused, pattern not found
return __last1;
if (!__pred(*--__m1, *--__m2)) // if there is a mismatch, restart with a new __l1
{
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _RandomAccessIterator1
__find_end(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
_RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred,
random_access_iterator_tag, random_access_iterator_tag)
{
// Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern
typename iterator_traits<_RandomAccessIterator2>::difference_type __len2 = __last2 - __first2;
if (__len2 == 0)
return __last1;
typename iterator_traits<_RandomAccessIterator1>::difference_type __len1 = __last1 - __first1;
if (__len1 < __len2)
return __last1;
const _RandomAccessIterator1 __s = __first1 + (__len2 - 1); // End of pattern match can't go before here
_RandomAccessIterator1 __l1 = __last1;
_RandomAccessIterator2 __l2 = __last2;
--__l2;
while (true)
{
while (true)
{
if (__s == __l1)
return __last1;
if (__pred(*--__l1, *__l2))
break;
}
_RandomAccessIterator1 __m1 = __l1;
_RandomAccessIterator2 __m2 = __l2;
while (true)
{
if (__m2 == __first2)
return __m1;
// no need to check range on __m1 because __s guarantees we have enough source
if (!__pred(*--__m1, *--__m2))
{
break;
}
}
}
}
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator1
find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred)
{
return _VSTD::__find_end<typename add_lvalue_reference<_BinaryPredicate>::type>
(__first1, __last1, __first2, __last2, __pred,
typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category());
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator1
find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2)
{
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::find_end(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
// find_first_of
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator1
__find_first_of_ce(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred)
{
for (; __first1 != __last1; ++__first1)
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__first1, *__j))
return __first1;
return __last1;
}
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator1
find_first_of(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred)
{
return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred);
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator1
find_first_of(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2)
{
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
// adjacent_find
template <class _ForwardIterator, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred)
{
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (__pred(*__first, *__i))
return __first;
__first = __i;
}
}
return __last;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
adjacent_find(_ForwardIterator __first, _ForwardIterator __last)
{
typedef typename iterator_traits<_ForwardIterator>::value_type __v;
return _VSTD::adjacent_find(__first, __last, __equal_to<__v>());
}
// count
template <class _InputIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename iterator_traits<_InputIterator>::difference_type
count(_InputIterator __first, _InputIterator __last, const _Tp& __value_)
{
typename iterator_traits<_InputIterator>::difference_type __r(0);
for (; __first != __last; ++__first)
if (*__first == __value_)
++__r;
return __r;
}
// count_if
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename iterator_traits<_InputIterator>::difference_type
count_if(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
typename iterator_traits<_InputIterator>::difference_type __r(0);
for (; __first != __last; ++__first)
if (__pred(*__first))
++__r;
return __r;
}
// mismatch
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _BinaryPredicate __pred)
{
for (; __first1 != __last1; ++__first1, (void) ++__first2)
if (!__pred(*__first1, *__first2))
break;
return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2)
{
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::mismatch(__first1, __last1, __first2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 11
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
_BinaryPredicate __pred)
{
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void) ++__first2)
if (!__pred(*__first1, *__first2))
break;
return pair<_InputIterator1, _InputIterator2>(__first1, __first2);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_InputIterator1, _InputIterator2>
mismatch(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2)
{
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::mismatch(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
#endif
// equal
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred)
{
for (; __first1 != __last1; ++__first1, (void) ++__first2)
if (!__pred(*__first1, *__first2))
return false;
return true;
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2)
{
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::equal(__first1, __last1, __first2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 11
template <class _BinaryPredicate, class _InputIterator1, class _InputIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
__equal(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _BinaryPredicate __pred,
input_iterator_tag, input_iterator_tag )
{
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void) ++__first2)
if (!__pred(*__first1, *__first2))
return false;
return __first1 == __last1 && __first2 == __last2;
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
__equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
_RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred,
random_access_iterator_tag, random_access_iterator_tag )
{
if ( _VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2))
return false;
return _VSTD::equal<_RandomAccessIterator1, _RandomAccessIterator2,
typename add_lvalue_reference<_BinaryPredicate>::type>
(__first1, __last1, __first2, __pred );
}
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
equal(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _BinaryPredicate __pred )
{
return _VSTD::__equal<typename add_lvalue_reference<_BinaryPredicate>::type>
(__first1, __last1, __first2, __last2, __pred,
typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
equal(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2)
{
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::__equal(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>(),
typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
#endif
// is_permutation
template<class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _BinaryPredicate __pred)
{
// shorten sequences as much as possible by lopping of any equal prefix
for (; __first1 != __last1; ++__first1, (void) ++__first2)
if (!__pred(*__first1, *__first2))
break;
if (__first1 == __last1)
return true;
// __first1 != __last1 && *__first1 != *__first2
typedef typename iterator_traits<_ForwardIterator1>::difference_type _D1;
_D1 __l1 = _VSTD::distance(__first1, __last1);
if (__l1 == _D1(1))
return false;
_ForwardIterator2 __last2 = _VSTD::next(__first2, __l1);
// For each element in [f1, l1) see if there are the same number of
// equal elements in [f2, l2)
for (_ForwardIterator1 __i = __first1; __i != __last1; ++__i)
{
// Have we already counted the number of *__i in [f1, l1)?
_ForwardIterator1 __match = __first1;
for (; __match != __i; ++__match)
if (__pred(*__match, *__i))
break;
if (__match == __i) {
// Count number of *__i in [f2, l2)
_D1 __c2 = 0;
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__i, *__j))
++__c2;
if (__c2 == 0)
return false;
// Count number of *__i in [__i, l1) (we can start with 1)
_D1 __c1 = 1;
for (_ForwardIterator1 __j = _VSTD::next(__i); __j != __last1; ++__j)
if (__pred(*__i, *__j))
++__c1;
if (__c1 != __c2)
return false;
}
}
return true;
}
template<class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2)
{
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::is_permutation(__first1, __last1, __first2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 11
template<class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred,
forward_iterator_tag, forward_iterator_tag )
{
// shorten sequences as much as possible by lopping of any equal prefix
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void) ++__first2)
if (!__pred(*__first1, *__first2))
break;
if (__first1 == __last1)
return __first2 == __last2;
else if (__first2 == __last2)
return false;
typedef typename iterator_traits<_ForwardIterator1>::difference_type _D1;
_D1 __l1 = _VSTD::distance(__first1, __last1);
typedef typename iterator_traits<_ForwardIterator2>::difference_type _D2;
_D2 __l2 = _VSTD::distance(__first2, __last2);
if (__l1 != __l2)
return false;
// For each element in [f1, l1) see if there are the same number of
// equal elements in [f2, l2)
for (_ForwardIterator1 __i = __first1; __i != __last1; ++__i)
{
// Have we already counted the number of *__i in [f1, l1)?
_ForwardIterator1 __match = __first1;
for (; __match != __i; ++__match)
if (__pred(*__match, *__i))
break;
if (__match == __i) {
// Count number of *__i in [f2, l2)
_D1 __c2 = 0;
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__i, *__j))
++__c2;
if (__c2 == 0)
return false;
// Count number of *__i in [__i, l1) (we can start with 1)
_D1 __c1 = 1;
for (_ForwardIterator1 __j = _VSTD::next(__i); __j != __last1; ++__j)
if (__pred(*__i, *__j))
++__c1;
if (__c1 != __c2)
return false;
}
}
return true;
}
template<class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__is_permutation(_RandomAccessIterator1 __first1, _RandomAccessIterator2 __last1,
_RandomAccessIterator1 __first2, _RandomAccessIterator2 __last2,
_BinaryPredicate __pred,
random_access_iterator_tag, random_access_iterator_tag )
{
if ( _VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2))
return false;
return _VSTD::is_permutation<_RandomAccessIterator1, _RandomAccessIterator2,
typename add_lvalue_reference<_BinaryPredicate>::type>
(__first1, __last1, __first2, __pred );
}
template<class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred )
{
return _VSTD::__is_permutation<typename add_lvalue_reference<_BinaryPredicate>::type>
(__first1, __last1, __first2, __last2, __pred,
typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category());
}
template<class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2)
{
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::__is_permutation(__first1, __last1, __first2, __last2,
__equal_to<__v1, __v2>(),
typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category());
}
#endif
// search
// __search is in <functional>
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator1
search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred)
{
return _VSTD::__search<typename add_lvalue_reference<_BinaryPredicate>::type>
(__first1, __last1, __first2, __last2, __pred,
typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category())
.first;
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator1
search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2)
{
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::search(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 14
template <class _ForwardIterator, class _Searcher>
_LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator search(_ForwardIterator __f, _ForwardIterator __l, const _Searcher &__s)
{ return __s(__f, __l).first; }
#endif
// search_n
template <class _BinaryPredicate, class _ForwardIterator, class _Size, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__search_n(_ForwardIterator __first, _ForwardIterator __last,
_Size __count, const _Tp& __value_, _BinaryPredicate __pred, forward_iterator_tag)
{
if (__count <= 0)
return __first;
while (true)
{
// Find first element in sequence that matchs __value_, with a mininum of loop checks
while (true)
{
if (__first == __last) // return __last if no element matches __value_
return __last;
if (__pred(*__first, __value_))
break;
++__first;
}
// *__first matches __value_, now match elements after here
_ForwardIterator __m = __first;
_Size __c(0);
while (true)
{
if (++__c == __count) // If pattern exhausted, __first is the answer (works for 1 element pattern)
return __first;
if (++__m == __last) // Otherwise if source exhaused, pattern not found
return __last;
if (!__pred(*__m, __value_)) // if there is a mismatch, restart with a new __first
{
__first = __m;
++__first;
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _RandomAccessIterator, class _Size, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _RandomAccessIterator
__search_n(_RandomAccessIterator __first, _RandomAccessIterator __last,
_Size __count, const _Tp& __value_, _BinaryPredicate __pred, random_access_iterator_tag)
{
if (__count <= 0)
return __first;
_Size __len = static_cast<_Size>(__last - __first);
if (__len < __count)
return __last;
const _RandomAccessIterator __s = __last - (__count - 1); // Start of pattern match can't go beyond here
while (true)
{
// Find first element in sequence that matchs __value_, with a mininum of loop checks
while (true)
{
if (__first >= __s) // return __last if no element matches __value_
return __last;
if (__pred(*__first, __value_))
break;
++__first;
}
// *__first matches __value_, now match elements after here
_RandomAccessIterator __m = __first;
_Size __c(0);
while (true)
{
if (++__c == __count) // If pattern exhausted, __first is the answer (works for 1 element pattern)
return __first;
++__m; // no need to check range on __m because __s guarantees we have enough source
if (!__pred(*__m, __value_)) // if there is a mismatch, restart with a new __first
{
__first = __m;
++__first;
break;
} // else there is a match, check next elements
}
}
}
template <class _ForwardIterator, class _Size, class _Tp, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
search_n(_ForwardIterator __first, _ForwardIterator __last,
_Size __count, const _Tp& __value_, _BinaryPredicate __pred)
{
return _VSTD::__search_n<typename add_lvalue_reference<_BinaryPredicate>::type>
(__first, __last, _VSTD::__convert_to_integral(__count), __value_, __pred,
typename iterator_traits<_ForwardIterator>::iterator_category());
}
template <class _ForwardIterator, class _Size, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
search_n(_ForwardIterator __first, _ForwardIterator __last, _Size __count, const _Tp& __value_)
{
typedef typename iterator_traits<_ForwardIterator>::value_type __v;
return _VSTD::search_n(__first, __last, _VSTD::__convert_to_integral(__count),
__value_, __equal_to<__v, _Tp>());
}
// __unwrap_iter, __rewrap_iter
// The job of __unwrap_iter is to lower contiguous iterators (such as
// vector<T>::iterator) into pointers, to reduce the number of template
// instantiations and to enable pointer-based optimizations e.g. in std::copy.
// For iterators that are not contiguous, it must be a no-op.
// In debug mode, we don't do this.
//
// __unwrap_iter is non-constexpr for user-defined iterators whose
// `to_address` and/or `operator->` is non-constexpr. This is okay; but we
// try to avoid doing __unwrap_iter in constant-evaluated contexts anyway.
//
// Some algorithms (e.g. std::copy, but not std::sort) need to convert an
// "unwrapped" result back into a contiguous iterator. Since contiguous iterators
// are random-access, we can do this portably using iterator arithmetic; this
// is the job of __rewrap_iter.
template <class _Iter, bool = __is_cpp17_contiguous_iterator<_Iter>::value>
struct __unwrap_iter_impl {
static _LIBCPP_CONSTEXPR _Iter
__apply(_Iter __i) _NOEXCEPT {
return __i;
}
};
#if _LIBCPP_DEBUG_LEVEL < 2
template <class _Iter>
struct __unwrap_iter_impl<_Iter, true> {
static _LIBCPP_CONSTEXPR decltype(_VSTD::__to_address(declval<_Iter>()))
__apply(_Iter __i) _NOEXCEPT {
return _VSTD::__to_address(__i);
}
};
#endif // _LIBCPP_DEBUG_LEVEL < 2
template<class _Iter, class _Impl = __unwrap_iter_impl<_Iter> >
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
decltype(_Impl::__apply(declval<_Iter>()))
__unwrap_iter(_Iter __i) _NOEXCEPT
{
return _Impl::__apply(__i);
}
template<class _OrigIter>
_OrigIter __rewrap_iter(_OrigIter, _OrigIter __result)
{
return __result;
}
template<class _OrigIter, class _UnwrappedIter>
_OrigIter __rewrap_iter(_OrigIter __first, _UnwrappedIter __result)
{
// Precondition: __result is reachable from __first
// Precondition: _OrigIter is a contiguous iterator
return __first + (__result - _VSTD::__unwrap_iter(__first));
}
// copy
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__copy_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
for (; __first != __last; ++__first, (void) ++__result)
*__result = *__first;
return __result;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY
_OutputIterator
__copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
return _VSTD::__copy_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_copy_assignable<_Up>::value,
_Up*
>::type
__copy(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
return __result + __n;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__copy_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__copy(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
// copy_backward
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__copy_backward_constexpr(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
while (__first != __last)
*--__result = *--__last;
return __result;
}
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY
_OutputIterator
__copy_backward(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
return _VSTD::__copy_backward_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_copy_assignable<_Up>::value,
_Up*
>::type
__copy_backward(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
{
__result -= __n;
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
}
return __result;
}
template <class _BidirectionalIterator1, class _BidirectionalIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_BidirectionalIterator2
copy_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last,
_BidirectionalIterator2 __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__copy_backward_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__copy_backward(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
// copy_if
template<class _InputIterator, class _OutputIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
copy_if(_InputIterator __first, _InputIterator __last,
_OutputIterator __result, _Predicate __pred)
{
for (; __first != __last; ++__first)
{
if (__pred(*__first))
{
*__result = *__first;
++__result;
}
}
return __result;
}
// copy_n
template<class _InputIterator, class _Size, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename enable_if
<
__is_cpp17_input_iterator<_InputIterator>::value &&
!__is_cpp17_random_access_iterator<_InputIterator>::value,
_OutputIterator
>::type
copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
if (__n > 0)
{
*__result = *__first;
++__result;
for (--__n; __n > 0; --__n)
{
++__first;
*__result = *__first;
++__result;
}
}
return __result;
}
template<class _InputIterator, class _Size, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename enable_if
<
__is_cpp17_random_access_iterator<_InputIterator>::value,
_OutputIterator
>::type
copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
return _VSTD::copy(__first, __first + __n, __result);
}
// move
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
for (; __first != __last; ++__first, (void) ++__result)
*__result = _VSTD::move(*__first);
return __result;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
return _VSTD::__move_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_move_assignable<_Up>::value,
_Up*
>::type
__move(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
return __result + __n;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
move(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__move_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__move(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
// move_backward
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move_backward_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
while (__first != __last)
*--__result = _VSTD::move(*--__last);
return __result;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_OutputIterator
__move_backward(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
return _VSTD::__move_backward_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_move_assignable<_Up>::value,
_Up*
>::type
__move_backward(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
{
__result -= __n;
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
}
return __result;
}
template <class _BidirectionalIterator1, class _BidirectionalIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_BidirectionalIterator2
move_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last,
_BidirectionalIterator2 __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__move_backward_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__move_backward(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
// iter_swap
// moved to <type_traits> for better swap / noexcept support
// transform
template <class _InputIterator, class _OutputIterator, class _UnaryOperation>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
transform(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _UnaryOperation __op)
{
for (; __first != __last; ++__first, (void) ++__result)
*__result = __op(*__first);
return __result;
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _BinaryOperation>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
transform(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2,
_OutputIterator __result, _BinaryOperation __binary_op)
{
for (; __first1 != __last1; ++__first1, (void) ++__first2, ++__result)
*__result = __binary_op(*__first1, *__first2);
return __result;
}
// replace
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
replace(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __old_value, const _Tp& __new_value)
{
for (; __first != __last; ++__first)
if (*__first == __old_value)
*__first = __new_value;
}
// replace_if
template <class _ForwardIterator, class _Predicate, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
replace_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, const _Tp& __new_value)
{
for (; __first != __last; ++__first)
if (__pred(*__first))
*__first = __new_value;
}
// replace_copy
template <class _InputIterator, class _OutputIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
replace_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result,
const _Tp& __old_value, const _Tp& __new_value)
{
for (; __first != __last; ++__first, (void) ++__result)
if (*__first == __old_value)
*__result = __new_value;
else
*__result = *__first;
return __result;
}
// replace_copy_if
template <class _InputIterator, class _OutputIterator, class _Predicate, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
replace_copy_if(_InputIterator __first, _InputIterator __last, _OutputIterator __result,
_Predicate __pred, const _Tp& __new_value)
{
for (; __first != __last; ++__first, (void) ++__result)
if (__pred(*__first))
*__result = __new_value;
else
*__result = *__first;
return __result;
}
// fill_n
template <class _OutputIterator, class _Size, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_)
{
for (; __n > 0; ++__first, (void) --__n)
*__first = __value_;
return __first;
}
template <class _OutputIterator, class _Size, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_)
{
return _VSTD::__fill_n(__first, _VSTD::__convert_to_integral(__n), __value_);
}
// fill
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, forward_iterator_tag)
{
for (; __first != __last; ++__first)
*__first = __value_;
}
template <class _RandomAccessIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value_, random_access_iterator_tag)
{
_VSTD::fill_n(__first, __last - __first, __value_);
}
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
_VSTD::__fill(__first, __last, __value_, typename iterator_traits<_ForwardIterator>::iterator_category());
}
// generate
template <class _ForwardIterator, class _Generator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
generate(_ForwardIterator __first, _ForwardIterator __last, _Generator __gen)
{
for (; __first != __last; ++__first)
*__first = __gen();
}
// generate_n
template <class _OutputIterator, class _Size, class _Generator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
generate_n(_OutputIterator __first, _Size __orig_n, _Generator __gen)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
for (; __n > 0; ++__first, (void) --__n)
*__first = __gen();
return __first;
}
// remove
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
remove(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
__first = _VSTD::find(__first, __last, __value_);
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (!(*__i == __value_))
{
*__first = _VSTD::move(*__i);
++__first;
}
}
}
return __first;
}
// remove_if
template <class _ForwardIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
remove_if(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
__first = _VSTD::find_if<_ForwardIterator, typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred);
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (!__pred(*__i))
{
*__first = _VSTD::move(*__i);
++__first;
}
}
}
return __first;
}
// remove_copy
template <class _InputIterator, class _OutputIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
remove_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, const _Tp& __value_)
{
for (; __first != __last; ++__first)
{
if (!(*__first == __value_))
{
*__result = *__first;
++__result;
}
}
return __result;
}
// remove_copy_if
template <class _InputIterator, class _OutputIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
remove_copy_if(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _Predicate __pred)
{
for (; __first != __last; ++__first)
{
if (!__pred(*__first))
{
*__result = *__first;
++__result;
}
}
return __result;
}
// unique
template <class _ForwardIterator, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
unique(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred)
{
__first = _VSTD::adjacent_find<_ForwardIterator, typename add_lvalue_reference<_BinaryPredicate>::type>
(__first, __last, __pred);
if (__first != __last)
{
// ... a a ? ...
// f i
_ForwardIterator __i = __first;
for (++__i; ++__i != __last;)
if (!__pred(*__first, *__i))
*++__first = _VSTD::move(*__i);
++__first;
}
return __first;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
unique(_ForwardIterator __first, _ForwardIterator __last)
{
typedef typename iterator_traits<_ForwardIterator>::value_type __v;
return _VSTD::unique(__first, __last, __equal_to<__v>());
}
// unique_copy
template <class _BinaryPredicate, class _InputIterator, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred,
input_iterator_tag, output_iterator_tag)
{
if (__first != __last)
{
typename iterator_traits<_InputIterator>::value_type __t(*__first);
*__result = __t;
++__result;
while (++__first != __last)
{
if (!__pred(__t, *__first))
{
__t = *__first;
*__result = __t;
++__result;
}
}
}
return __result;
}
template <class _BinaryPredicate, class _ForwardIterator, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__unique_copy(_ForwardIterator __first, _ForwardIterator __last, _OutputIterator __result, _BinaryPredicate __pred,
forward_iterator_tag, output_iterator_tag)
{
if (__first != __last)
{
_ForwardIterator __i = __first;
*__result = *__i;
++__result;
while (++__first != __last)
{
if (!__pred(*__i, *__first))
{
*__result = *__first;
++__result;
__i = __first;
}
}
}
return __result;
}
template <class _BinaryPredicate, class _InputIterator, class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__unique_copy(_InputIterator __first, _InputIterator __last, _ForwardIterator __result, _BinaryPredicate __pred,
input_iterator_tag, forward_iterator_tag)
{
if (__first != __last)
{
*__result = *__first;
while (++__first != __last)
if (!__pred(*__result, *__first))
*++__result = *__first;
++__result;
}
return __result;
}
template <class _InputIterator, class _OutputIterator, class _BinaryPredicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result, _BinaryPredicate __pred)
{
return _VSTD::__unique_copy<typename add_lvalue_reference<_BinaryPredicate>::type>
(__first, __last, __result, __pred,
typename iterator_traits<_InputIterator>::iterator_category(),
typename iterator_traits<_OutputIterator>::iterator_category());
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
unique_copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
typedef typename iterator_traits<_InputIterator>::value_type __v;
return _VSTD::unique_copy(__first, __last, __result, __equal_to<__v>());
}
// reverse
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__reverse(_BidirectionalIterator __first, _BidirectionalIterator __last, bidirectional_iterator_tag)
{
while (__first != __last)
{
if (__first == --__last)
break;
_VSTD::iter_swap(__first, __last);
++__first;
}
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__reverse(_RandomAccessIterator __first, _RandomAccessIterator __last, random_access_iterator_tag)
{
if (__first != __last)
for (; __first < --__last; ++__first)
_VSTD::iter_swap(__first, __last);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
reverse(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
_VSTD::__reverse(__first, __last, typename iterator_traits<_BidirectionalIterator>::iterator_category());
}
// reverse_copy
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
reverse_copy(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
for (; __first != __last; ++__result)
*__result = *--__last;
return __result;
}
// rotate
template <class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator
__rotate_left(_ForwardIterator __first, _ForwardIterator __last)
{
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
value_type __tmp = _VSTD::move(*__first);
_ForwardIterator __lm1 = _VSTD::move(_VSTD::next(__first), __last, __first);
*__lm1 = _VSTD::move(__tmp);
return __lm1;
}
template <class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _BidirectionalIterator
__rotate_right(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
_BidirectionalIterator __lm1 = _VSTD::prev(__last);
value_type __tmp = _VSTD::move(*__lm1);
_BidirectionalIterator __fp1 = _VSTD::move_backward(__first, __lm1, __last);
*__first = _VSTD::move(__tmp);
return __fp1;
}
template <class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX14 _ForwardIterator
__rotate_forward(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last)
{
_ForwardIterator __i = __middle;
while (true)
{
swap(*__first, *__i);
++__first;
if (++__i == __last)
break;
if (__first == __middle)
__middle = __i;
}
_ForwardIterator __r = __first;
if (__first != __middle)
{
__i = __middle;
while (true)
{
swap(*__first, *__i);
++__first;
if (++__i == __last)
{
if (__first == __middle)
break;
__i = __middle;
}
else if (__first == __middle)
__middle = __i;
}
}
return __r;
}
template<typename _Integral>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX14 _Integral
__algo_gcd(_Integral __x, _Integral __y)
{
do
{
_Integral __t = __x % __y;
__x = __y;
__y = __t;
} while (__y);
return __x;
}
template<typename _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX14 _RandomAccessIterator
__rotate_gcd(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
const difference_type __m1 = __middle - __first;
const difference_type __m2 = __last - __middle;
if (__m1 == __m2)
{
_VSTD::swap_ranges(__first, __middle, __middle);
return __middle;
}
const difference_type __g = _VSTD::__algo_gcd(__m1, __m2);
for (_RandomAccessIterator __p = __first + __g; __p != __first;)
{
value_type __t(_VSTD::move(*--__p));
_RandomAccessIterator __p1 = __p;
_RandomAccessIterator __p2 = __p1 + __m1;
do
{
*__p1 = _VSTD::move(*__p2);
__p1 = __p2;
const difference_type __d = __last - __p2;
if (__m1 < __d)
__p2 += __m1;
else
__p2 = __first + (__m1 - __d);
} while (__p2 != __p);
*__p1 = _VSTD::move(__t);
}
return __first + __m2;
}
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator
__rotate(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last,
_VSTD::forward_iterator_tag)
{
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
if (is_trivially_move_assignable<value_type>::value)
{
if (_VSTD::next(__first) == __middle)
return _VSTD::__rotate_left(__first, __last);
}
return _VSTD::__rotate_forward(__first, __middle, __last);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11 _BidirectionalIterator
__rotate(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
bidirectional_iterator_tag)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
if (is_trivially_move_assignable<value_type>::value)
{
if (_VSTD::next(__first) == __middle)
return _VSTD::__rotate_left(__first, __last);
if (_VSTD::next(__middle) == __last)
return _VSTD::__rotate_right(__first, __last);
}
return _VSTD::__rotate_forward(__first, __middle, __last);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX11 _RandomAccessIterator
__rotate(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
random_access_iterator_tag)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
if (is_trivially_move_assignable<value_type>::value)
{
if (_VSTD::next(__first) == __middle)
return _VSTD::__rotate_left(__first, __last);
if (_VSTD::next(__middle) == __last)
return _VSTD::__rotate_right(__first, __last);
return _VSTD::__rotate_gcd(__first, __middle, __last);
}
return _VSTD::__rotate_forward(__first, __middle, __last);
}
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
rotate(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last)
{
if (__first == __middle)
return __last;
if (__middle == __last)
return __first;
return _VSTD::__rotate(__first, __middle, __last,
typename iterator_traits<_ForwardIterator>::iterator_category());
}
// rotate_copy
template <class _ForwardIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
rotate_copy(_ForwardIterator __first, _ForwardIterator __middle, _ForwardIterator __last, _OutputIterator __result)
{
return _VSTD::copy(__first, __middle, _VSTD::copy(__middle, __last, __result));
}
// min_element
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
min_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value,
"std::min_element requires a ForwardIterator");
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
if (__comp(*__i, *__first))
__first = __i;
}
return __first;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
min_element(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::min_element(__first, __last,
__less<typename iterator_traits<_ForwardIterator>::value_type>());
}
// min
template <class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
min(const _Tp& __a, const _Tp& __b, _Compare __comp)
{
return __comp(__b, __a) ? __b : __a;
}
template <class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
min(const _Tp& __a, const _Tp& __b)
{
return _VSTD::min(__a, __b, __less<_Tp>());
}
#ifndef _LIBCPP_CXX03_LANG
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
min(initializer_list<_Tp> __t, _Compare __comp)
{
return *_VSTD::min_element(__t.begin(), __t.end(), __comp);
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
min(initializer_list<_Tp> __t)
{
return *_VSTD::min_element(__t.begin(), __t.end(), __less<_Tp>());
}
#endif // _LIBCPP_CXX03_LANG
// max_element
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
max_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value,
"std::max_element requires a ForwardIterator");
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
if (__comp(*__first, *__i))
__first = __i;
}
return __first;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_ForwardIterator
max_element(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::max_element(__first, __last,
__less<typename iterator_traits<_ForwardIterator>::value_type>());
}
// max
template <class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
max(const _Tp& __a, const _Tp& __b, _Compare __comp)
{
return __comp(__a, __b) ? __b : __a;
}
template <class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
max(const _Tp& __a, const _Tp& __b)
{
return _VSTD::max(__a, __b, __less<_Tp>());
}
#ifndef _LIBCPP_CXX03_LANG
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
max(initializer_list<_Tp> __t, _Compare __comp)
{
return *_VSTD::max_element(__t.begin(), __t.end(), __comp);
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp
max(initializer_list<_Tp> __t)
{
return *_VSTD::max_element(__t.begin(), __t.end(), __less<_Tp>());
}
#endif // _LIBCPP_CXX03_LANG
#if _LIBCPP_STD_VER > 14
// clamp
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
const _Tp&
clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi, _Compare __comp)
{
_LIBCPP_ASSERT(!__comp(__hi, __lo), "Bad bounds passed to std::clamp");
return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v;
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
const _Tp&
clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi)
{
return _VSTD::clamp(__v, __lo, __hi, __less<_Tp>());
}
#endif
// minmax_element
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_ForwardIterator, _ForwardIterator>
minmax_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value,
"std::minmax_element requires a ForwardIterator");
pair<_ForwardIterator, _ForwardIterator> __result(__first, __first);
if (__first != __last)
{
if (++__first != __last)
{
if (__comp(*__first, *__result.first))
__result.first = __first;
else
__result.second = __first;
while (++__first != __last)
{
_ForwardIterator __i = __first;
if (++__first == __last)
{
if (__comp(*__i, *__result.first))
__result.first = __i;
else if (!__comp(*__i, *__result.second))
__result.second = __i;
break;
}
else
{
if (__comp(*__first, *__i))
{
if (__comp(*__first, *__result.first))
__result.first = __first;
if (!__comp(*__i, *__result.second))
__result.second = __i;
}
else
{
if (__comp(*__i, *__result.first))
__result.first = __i;
if (!__comp(*__first, *__result.second))
__result.second = __first;
}
}
}
}
}
return __result;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_ForwardIterator, _ForwardIterator>
minmax_element(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::minmax_element(__first, __last,
__less<typename iterator_traits<_ForwardIterator>::value_type>());
}
// minmax
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<const _Tp&, const _Tp&>
minmax(const _Tp& __a, const _Tp& __b, _Compare __comp)
{
return __comp(__b, __a) ? pair<const _Tp&, const _Tp&>(__b, __a) :
pair<const _Tp&, const _Tp&>(__a, __b);
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<const _Tp&, const _Tp&>
minmax(const _Tp& __a, const _Tp& __b)
{
return _VSTD::minmax(__a, __b, __less<_Tp>());
}
#ifndef _LIBCPP_CXX03_LANG
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_Tp, _Tp>
minmax(initializer_list<_Tp> __t, _Compare __comp)
{
typedef typename initializer_list<_Tp>::const_iterator _Iter;
_Iter __first = __t.begin();
_Iter __last = __t.end();
pair<_Tp, _Tp> __result(*__first, *__first);
++__first;
if (__t.size() % 2 == 0)
{
if (__comp(*__first, __result.first))
__result.first = *__first;
else
__result.second = *__first;
++__first;
}
while (__first != __last)
{
_Tp __prev = *__first++;
if (__comp(*__first, __prev)) {
if ( __comp(*__first, __result.first)) __result.first = *__first;
if (!__comp(__prev, __result.second)) __result.second = __prev;
}
else {
if ( __comp(__prev, __result.first)) __result.first = __prev;
if (!__comp(*__first, __result.second)) __result.second = *__first;
}
__first++;
}
return __result;
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_Tp, _Tp>
minmax(initializer_list<_Tp> __t)
{
return _VSTD::minmax(__t, __less<_Tp>());
}
#endif // _LIBCPP_CXX03_LANG
// random_shuffle
// __independent_bits_engine
template <unsigned long long _Xp, size_t _Rp>
struct __log2_imp
{
static const size_t value = _Xp & ((unsigned long long)(1) << _Rp) ? _Rp
: __log2_imp<_Xp, _Rp - 1>::value;
};
template <unsigned long long _Xp>
struct __log2_imp<_Xp, 0>
{
static const size_t value = 0;
};
template <size_t _Rp>
struct __log2_imp<0, _Rp>
{
static const size_t value = _Rp + 1;
};
template <class _UIntType, _UIntType _Xp>
struct __log2
{
static const size_t value = __log2_imp<_Xp,
sizeof(_UIntType) * __CHAR_BIT__ - 1>::value;
};
template<class _Engine, class _UIntType>
class __independent_bits_engine
{
public:
// types
typedef _UIntType result_type;
private:
typedef typename _Engine::result_type _Engine_result_type;
typedef typename conditional
<
sizeof(_Engine_result_type) <= sizeof(result_type),
result_type,
_Engine_result_type
>::type _Working_result_type;
_Engine& __e_;
size_t __w_;
size_t __w0_;
size_t __n_;
size_t __n0_;
_Working_result_type __y0_;
_Working_result_type __y1_;
_Engine_result_type __mask0_;
_Engine_result_type __mask1_;
#ifdef _LIBCPP_CXX03_LANG
static const _Working_result_type _Rp = _Engine::_Max - _Engine::_Min
+ _Working_result_type(1);
#else
static _LIBCPP_CONSTEXPR const _Working_result_type _Rp = _Engine::max() - _Engine::min()
+ _Working_result_type(1);
#endif
static _LIBCPP_CONSTEXPR const size_t __m = __log2<_Working_result_type, _Rp>::value;
static _LIBCPP_CONSTEXPR const size_t _WDt = numeric_limits<_Working_result_type>::digits;
static _LIBCPP_CONSTEXPR const size_t _EDt = numeric_limits<_Engine_result_type>::digits;
public:
// constructors and seeding functions
__independent_bits_engine(_Engine& __e, size_t __w);
// generating functions
result_type operator()() {return __eval(integral_constant<bool, _Rp != 0>());}
private:
result_type __eval(false_type);
result_type __eval(true_type);
};
template<class _Engine, class _UIntType>
__independent_bits_engine<_Engine, _UIntType>
::__independent_bits_engine(_Engine& __e, size_t __w)
: __e_(__e),
__w_(__w)
{
__n_ = __w_ / __m + (__w_ % __m != 0);
__w0_ = __w_ / __n_;
if (_Rp == 0)
__y0_ = _Rp;
else if (__w0_ < _WDt)
__y0_ = (_Rp >> __w0_) << __w0_;
else
__y0_ = 0;
if (_Rp - __y0_ > __y0_ / __n_)
{
++__n_;
__w0_ = __w_ / __n_;
if (__w0_ < _WDt)
__y0_ = (_Rp >> __w0_) << __w0_;
else
__y0_ = 0;
}
__n0_ = __n_ - __w_ % __n_;
if (__w0_ < _WDt - 1)
__y1_ = (_Rp >> (__w0_ + 1)) << (__w0_ + 1);
else
__y1_ = 0;
__mask0_ = __w0_ > 0 ? _Engine_result_type(~0) >> (_EDt - __w0_) :
_Engine_result_type(0);
__mask1_ = __w0_ < _EDt - 1 ?
_Engine_result_type(~0) >> (_EDt - (__w0_ + 1)) :
_Engine_result_type(~0);
}
template<class _Engine, class _UIntType>
inline
_UIntType
__independent_bits_engine<_Engine, _UIntType>::__eval(false_type)
{
return static_cast<result_type>(__e_() & __mask0_);
}
template<class _Engine, class _UIntType>
_UIntType
__independent_bits_engine<_Engine, _UIntType>::__eval(true_type)
{
const size_t _WRt = numeric_limits<result_type>::digits;
result_type _Sp = 0;
for (size_t __k = 0; __k < __n0_; ++__k)
{
_Engine_result_type __u;
do
{
__u = __e_() - _Engine::min();
} while (__u >= __y0_);
if (__w0_ < _WRt)
_Sp <<= __w0_;
else
_Sp = 0;
_Sp += __u & __mask0_;
}
for (size_t __k = __n0_; __k < __n_; ++__k)
{
_Engine_result_type __u;
do
{
__u = __e_() - _Engine::min();
} while (__u >= __y1_);
if (__w0_ < _WRt - 1)
_Sp <<= __w0_ + 1;
else
_Sp = 0;
_Sp += __u & __mask1_;
}
return _Sp;
}
// uniform_int_distribution
template<class _IntType = int>
class uniform_int_distribution
{
public:
// types
typedef _IntType result_type;
class param_type
{
result_type __a_;
result_type __b_;
public:
typedef uniform_int_distribution distribution_type;
explicit param_type(result_type __a = 0,
result_type __b = numeric_limits<result_type>::max())
: __a_(__a), __b_(__b) {}
result_type a() const {return __a_;}
result_type b() const {return __b_;}
friend bool operator==(const param_type& __x, const param_type& __y)
{return __x.__a_ == __y.__a_ && __x.__b_ == __y.__b_;}
friend bool operator!=(const param_type& __x, const param_type& __y)
{return !(__x == __y);}
};
private:
param_type __p_;
public:
// constructors and reset functions
#ifndef _LIBCPP_CXX03_LANG
uniform_int_distribution() : uniform_int_distribution(0) {}
explicit uniform_int_distribution(
result_type __a, result_type __b = numeric_limits<result_type>::max())
: __p_(param_type(__a, __b)) {}
#else
explicit uniform_int_distribution(
result_type __a = 0,
result_type __b = numeric_limits<result_type>::max())
: __p_(param_type(__a, __b)) {}
#endif
explicit uniform_int_distribution(const param_type& __p) : __p_(__p) {}
void reset() {}
// generating functions
template<class _URNG> result_type operator()(_URNG& __g)
{return (*this)(__g, __p_);}
template<class _URNG> result_type operator()(_URNG& __g, const param_type& __p);
// property functions
result_type a() const {return __p_.a();}
result_type b() const {return __p_.b();}
param_type param() const {return __p_;}
void param(const param_type& __p) {__p_ = __p;}
result_type min() const {return a();}
result_type max() const {return b();}
friend bool operator==(const uniform_int_distribution& __x,
const uniform_int_distribution& __y)
{return __x.__p_ == __y.__p_;}
friend bool operator!=(const uniform_int_distribution& __x,
const uniform_int_distribution& __y)
{return !(__x == __y);}
};
template<class _IntType>
template<class _URNG>
typename uniform_int_distribution<_IntType>::result_type
uniform_int_distribution<_IntType>::operator()(_URNG& __g, const param_type& __p)
_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
{
typedef typename conditional<sizeof(result_type) <= sizeof(uint32_t),
uint32_t, uint64_t>::type _UIntType;
const _UIntType _Rp = _UIntType(__p.b()) - _UIntType(__p.a()) + _UIntType(1);
if (_Rp == 1)
return __p.a();
const size_t _Dt = numeric_limits<_UIntType>::digits;
typedef __independent_bits_engine<_URNG, _UIntType> _Eng;
if (_Rp == 0)
return static_cast<result_type>(_Eng(__g, _Dt)());
size_t __w = _Dt - __libcpp_clz(_Rp) - 1;
if ((_Rp & (numeric_limits<_UIntType>::max() >> (_Dt - __w))) != 0)
++__w;
_Eng __e(__g, __w);
_UIntType __u;
do
{
__u = __e();
} while (__u >= _Rp);
return static_cast<result_type>(__u + __p.a());
}
#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE) \
|| defined(_LIBCPP_BUILDING_LIBRARY)
class _LIBCPP_TYPE_VIS __rs_default;
_LIBCPP_FUNC_VIS __rs_default __rs_get();
class _LIBCPP_TYPE_VIS __rs_default
{
static unsigned __c_;
__rs_default();
public:
typedef uint_fast32_t result_type;
static const result_type _Min = 0;
static const result_type _Max = 0xFFFFFFFF;
__rs_default(const __rs_default&);
~__rs_default();
result_type operator()();
static _LIBCPP_CONSTEXPR result_type min() {return _Min;}
static _LIBCPP_CONSTEXPR result_type max() {return _Max;}
friend _LIBCPP_FUNC_VIS __rs_default __rs_get();
};
_LIBCPP_FUNC_VIS __rs_default __rs_get();
template <class _RandomAccessIterator>
_LIBCPP_DEPRECATED_IN_CXX14 void
random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef uniform_int_distribution<ptrdiff_t> _Dp;
typedef typename _Dp::param_type _Pp;
difference_type __d = __last - __first;
if (__d > 1)
{
_Dp __uid;
__rs_default __g = __rs_get();
for (--__last, (void) --__d; __first < __last; ++__first, (void) --__d)
{
difference_type __i = __uid(__g, _Pp(0, __d));
if (__i != difference_type(0))
swap(*__first, *(__first + __i));
}
}
}
template <class _RandomAccessIterator, class _RandomNumberGenerator>
_LIBCPP_DEPRECATED_IN_CXX14 void
random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last,
#ifndef _LIBCPP_CXX03_LANG
_RandomNumberGenerator&& __rand)
#else
_RandomNumberGenerator& __rand)
#endif
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __d = __last - __first;
if (__d > 1)
{
for (--__last; __first < __last; ++__first, (void) --__d)
{
difference_type __i = __rand(__d);
if (__i != difference_type(0))
swap(*__first, *(__first + __i));
}
}
}
#endif
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
_LIBCPP_INLINE_VISIBILITY
_SampleIterator __sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n,
_UniformRandomNumberGenerator & __g,
input_iterator_tag) {
_Distance __k = 0;
for (; __first != __last && __k < __n; ++__first, (void) ++__k)
__output_iter[__k] = *__first;
_Distance __sz = __k;
for (; __first != __last; ++__first, (void) ++__k) {
_Distance __r = uniform_int_distribution<_Distance>(0, __k)(__g);
if (__r < __sz)
__output_iter[__r] = *__first;
}
return __output_iter + _VSTD::min(__n, __k);
}
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
_LIBCPP_INLINE_VISIBILITY
_SampleIterator __sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n,
_UniformRandomNumberGenerator& __g,
forward_iterator_tag) {
_Distance __unsampled_sz = _VSTD::distance(__first, __last);
for (__n = _VSTD::min(__n, __unsampled_sz); __n != 0; ++__first) {
_Distance __r = uniform_int_distribution<_Distance>(0, --__unsampled_sz)(__g);
if (__r < __n) {
*__output_iter++ = *__first;
--__n;
}
}
return __output_iter;
}
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
_LIBCPP_INLINE_VISIBILITY
_SampleIterator __sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n, _UniformRandomNumberGenerator& __g) {
typedef typename iterator_traits<_PopulationIterator>::iterator_category
_PopCategory;
typedef typename iterator_traits<_PopulationIterator>::difference_type
_Difference;
static_assert(__is_cpp17_forward_iterator<_PopulationIterator>::value ||
__is_cpp17_random_access_iterator<_SampleIterator>::value,
"SampleIterator must meet the requirements of RandomAccessIterator");
typedef typename common_type<_Distance, _Difference>::type _CommonType;
_LIBCPP_ASSERT(__n >= 0, "N must be a positive number.");
return _VSTD::__sample(
__first, __last, __output_iter, _CommonType(__n),
__g, _PopCategory());
}
#if _LIBCPP_STD_VER > 14
template <class _PopulationIterator, class _SampleIterator, class _Distance,
class _UniformRandomNumberGenerator>
inline _LIBCPP_INLINE_VISIBILITY
_SampleIterator sample(_PopulationIterator __first,
_PopulationIterator __last, _SampleIterator __output_iter,
_Distance __n, _UniformRandomNumberGenerator&& __g) {
return _VSTD::__sample(__first, __last, __output_iter, __n, __g);
}
#endif // _LIBCPP_STD_VER > 14
template<class _RandomAccessIterator, class _UniformRandomNumberGenerator>
void shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last,
_UniformRandomNumberGenerator&& __g)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef uniform_int_distribution<ptrdiff_t> _Dp;
typedef typename _Dp::param_type _Pp;
difference_type __d = __last - __first;
if (__d > 1)
{
_Dp __uid;
for (--__last, (void) --__d; __first < __last; ++__first, (void) --__d)
{
difference_type __i = __uid(__g, _Pp(0, __d));
if (__i != difference_type(0))
swap(*__first, *(__first + __i));
}
}
}
#if _LIBCPP_STD_VER > 17
// shift_left, shift_right
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY constexpr
_ForwardIterator
shift_left(_ForwardIterator __first, _ForwardIterator __last,
typename iterator_traits<_ForwardIterator>::difference_type __n)
{
if (__n == 0) {
return __last;
}
_ForwardIterator __m = __first;
if constexpr (__is_cpp17_random_access_iterator<_ForwardIterator>::value) {
if (__n >= __last - __first) {
return __first;
}
__m += __n;
} else {
for (; __n > 0; --__n) {
if (__m == __last) {
return __first;
}
++__m;
}
}
return _VSTD::move(__m, __last, __first);
}
template <class _ForwardIterator>
inline _LIBCPP_INLINE_VISIBILITY constexpr
_ForwardIterator
shift_right(_ForwardIterator __first, _ForwardIterator __last,
typename iterator_traits<_ForwardIterator>::difference_type __n)
{
if (__n == 0) {
return __first;
}
if constexpr (__is_cpp17_random_access_iterator<_ForwardIterator>::value) {
decltype(__n) __d = __last - __first;
if (__n >= __d) {
return __last;
}
_ForwardIterator __m = __first + (__d - __n);
return _VSTD::move_backward(__first, __m, __last);
} else if constexpr (__is_cpp17_bidirectional_iterator<_ForwardIterator>::value) {
_ForwardIterator __m = __last;
for (; __n > 0; --__n) {
if (__m == __first) {
return __last;
}
--__m;
}
return _VSTD::move_backward(__first, __m, __last);
} else {
_ForwardIterator __ret = __first;
for (; __n > 0; --__n) {
if (__ret == __last) {
return __last;
}
++__ret;
}
// We have an __n-element scratch space from __first to __ret.
// Slide an __n-element window [__trail, __lead) from left to right.
// We're essentially doing swap_ranges(__first, __ret, __trail, __lead)
// over and over; but once __lead reaches __last we needn't bother
// to save the values of elements [__trail, __last).
auto __trail = __first;
auto __lead = __ret;
while (__trail != __ret) {
if (__lead == __last) {
_VSTD::move(__first, __trail, __ret);
return __ret;
}
++__trail;
++__lead;
}
_ForwardIterator __mid = __first;
while (true) {
if (__lead == __last) {
__trail = _VSTD::move(__mid, __ret, __trail);
_VSTD::move(__first, __mid, __trail);
return __ret;
}
swap(*__mid, *__trail);
++__mid;
++__trail;
++__lead;
if (__mid == __ret) {
__mid = __first;
}
}
}
}
#endif // _LIBCPP_STD_VER > 17
// is_partitioned
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_partitioned(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (!__pred(*__first))
break;
if ( __first == __last )
return true;
++__first;
for (; __first != __last; ++__first)
if (__pred(*__first))
return false;
return true;
}
// partition
template <class _Predicate, class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred, forward_iterator_tag)
{
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
for (_ForwardIterator __p = __first; ++__p != __last;)
{
if (__pred(*__p))
{
swap(*__first, *__p);
++__first;
}
}
return __first;
}
template <class _Predicate, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _BidirectionalIterator
__partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred,
bidirectional_iterator_tag)
{
while (true)
{
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
do
{
if (__first == --__last)
return __first;
} while (!__pred(*__last));
swap(*__first, *__last);
++__first;
}
}
template <class _ForwardIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
return _VSTD::__partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, typename iterator_traits<_ForwardIterator>::iterator_category());
}
// partition_copy
template <class _InputIterator, class _OutputIterator1,
class _OutputIterator2, class _Predicate>
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_OutputIterator1, _OutputIterator2>
partition_copy(_InputIterator __first, _InputIterator __last,
_OutputIterator1 __out_true, _OutputIterator2 __out_false,
_Predicate __pred)
{
for (; __first != __last; ++__first)
{
if (__pred(*__first))
{
*__out_true = *__first;
++__out_true;
}
else
{
*__out_false = *__first;
++__out_false;
}
}
return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false);
}
// partition_point
template<class _ForwardIterator, class _Predicate>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
partition_point(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__pred(*__m))
{
__first = ++__m;
__len -= __l2 + 1;
}
else
__len = __l2;
}
return __first;
}
// stable_partition
template <class _Predicate, class _ForwardIterator, class _Distance, class _Pair>
_ForwardIterator
__stable_partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred,
_Distance __len, _Pair __p, forward_iterator_tag __fit)
{
// *__first is known to be false
// __len >= 1
if (__len == 1)
return __first;
if (__len == 2)
{
_ForwardIterator __m = __first;
if (__pred(*++__m))
{
swap(*__first, *__m);
return __m;
}
return __first;
}
if (__len <= __p.second)
{ // The buffer is big enough to use
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__p.first, __d);
// Move the falses into the temporary buffer, and the trues to the front of the line
// Update __first to always point to the end of the trues
value_type* __t = __p.first;
::new ((void*)__t) value_type(_VSTD::move(*__first));
__d.template __incr<value_type>();
++__t;
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (__pred(*__i))
{
*__first = _VSTD::move(*__i);
++__first;
}
else
{
::new ((void*)__t) value_type(_VSTD::move(*__i));
__d.template __incr<value_type>();
++__t;
}
}
// All trues now at start of range, all falses in buffer
// Move falses back into range, but don't mess up __first which points to first false
__i = __first;
for (value_type* __t2 = __p.first; __t2 < __t; ++__t2, (void) ++__i)
*__i = _VSTD::move(*__t2);
// __h destructs moved-from values out of the temp buffer, but doesn't deallocate buffer
return __first;
}
// Else not enough buffer, do in place
// __len >= 3
_ForwardIterator __m = __first;
_Distance __len2 = __len / 2; // __len2 >= 2
_VSTD::advance(__m, __len2);
// recurse on [__first, __m), *__first know to be false
// F?????????????????
// f m l
typedef typename add_lvalue_reference<_Predicate>::type _PredRef;
_ForwardIterator __first_false = _VSTD::__stable_partition<_PredRef>(__first, __m, __pred, __len2, __p, __fit);
// TTTFFFFF??????????
// f ff m l
// recurse on [__m, __last], except increase __m until *(__m) is false, *__last know to be true
_ForwardIterator __m1 = __m;
_ForwardIterator __second_false = __last;
_Distance __len_half = __len - __len2;
while (__pred(*__m1))
{
if (++__m1 == __last)
goto __second_half_done;
--__len_half;
}
// TTTFFFFFTTTF??????
// f ff m m1 l
__second_false = _VSTD::__stable_partition<_PredRef>(__m1, __last, __pred, __len_half, __p, __fit);
__second_half_done:
// TTTFFFFFTTTTTFFFFF
// f ff m sf l
return _VSTD::rotate(__first_false, __m, __second_false);
// TTTTTTTTFFFFFFFFFF
// |
}
struct __return_temporary_buffer
{
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) const {_VSTD::return_temporary_buffer(__p);}
};
template <class _Predicate, class _ForwardIterator>
_ForwardIterator
__stable_partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred,
forward_iterator_tag)
{
const unsigned __alloc_limit = 3; // might want to make this a function of trivial assignment
// Either prove all true and return __first or point to first false
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
// We now have a reduced range [__first, __last)
// *__first is known to be false
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
typedef typename iterator_traits<_ForwardIterator>::value_type value_type;
difference_type __len = _VSTD::distance(__first, __last);
pair<value_type*, ptrdiff_t> __p(0, 0);
unique_ptr<value_type, __return_temporary_buffer> __h;
if (__len >= __alloc_limit)
{
__p = _VSTD::get_temporary_buffer<value_type>(__len);
__h.reset(__p.first);
}
return _VSTD::__stable_partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, __len, __p, forward_iterator_tag());
}
template <class _Predicate, class _BidirectionalIterator, class _Distance, class _Pair>
_BidirectionalIterator
__stable_partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred,
_Distance __len, _Pair __p, bidirectional_iterator_tag __bit)
{
// *__first is known to be false
// *__last is known to be true
// __len >= 2
if (__len == 2)
{
swap(*__first, *__last);
return __last;
}
if (__len == 3)
{
_BidirectionalIterator __m = __first;
if (__pred(*++__m))
{
swap(*__first, *__m);
swap(*__m, *__last);
return __last;
}
swap(*__m, *__last);
swap(*__first, *__m);
return __m;
}
if (__len <= __p.second)
{ // The buffer is big enough to use
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__p.first, __d);
// Move the falses into the temporary buffer, and the trues to the front of the line
// Update __first to always point to the end of the trues
value_type* __t = __p.first;
::new ((void*)__t) value_type(_VSTD::move(*__first));
__d.template __incr<value_type>();
++__t;
_BidirectionalIterator __i = __first;
while (++__i != __last)
{
if (__pred(*__i))
{
*__first = _VSTD::move(*__i);
++__first;
}
else
{
::new ((void*)__t) value_type(_VSTD::move(*__i));
__d.template __incr<value_type>();
++__t;
}
}
// move *__last, known to be true
*__first = _VSTD::move(*__i);
__i = ++__first;
// All trues now at start of range, all falses in buffer
// Move falses back into range, but don't mess up __first which points to first false
for (value_type* __t2 = __p.first; __t2 < __t; ++__t2, (void) ++__i)
*__i = _VSTD::move(*__t2);
// __h destructs moved-from values out of the temp buffer, but doesn't deallocate buffer
return __first;
}
// Else not enough buffer, do in place
// __len >= 4
_BidirectionalIterator __m = __first;
_Distance __len2 = __len / 2; // __len2 >= 2
_VSTD::advance(__m, __len2);
// recurse on [__first, __m-1], except reduce __m-1 until *(__m-1) is true, *__first know to be false
// F????????????????T
// f m l
_BidirectionalIterator __m1 = __m;
_BidirectionalIterator __first_false = __first;
_Distance __len_half = __len2;
while (!__pred(*--__m1))
{
if (__m1 == __first)
goto __first_half_done;
--__len_half;
}
// F???TFFF?????????T
// f m1 m l
typedef typename add_lvalue_reference<_Predicate>::type _PredRef;
__first_false = _VSTD::__stable_partition<_PredRef>(__first, __m1, __pred, __len_half, __p, __bit);
__first_half_done:
// TTTFFFFF?????????T
// f ff m l
// recurse on [__m, __last], except increase __m until *(__m) is false, *__last know to be true
__m1 = __m;
_BidirectionalIterator __second_false = __last;
++__second_false;
__len_half = __len - __len2;
while (__pred(*__m1))
{
if (++__m1 == __last)
goto __second_half_done;
--__len_half;
}
// TTTFFFFFTTTF?????T
// f ff m m1 l
__second_false = _VSTD::__stable_partition<_PredRef>(__m1, __last, __pred, __len_half, __p, __bit);
__second_half_done:
// TTTFFFFFTTTTTFFFFF
// f ff m sf l
return _VSTD::rotate(__first_false, __m, __second_false);
// TTTTTTTTFFFFFFFFFF
// |
}
template <class _Predicate, class _BidirectionalIterator>
_BidirectionalIterator
__stable_partition(_BidirectionalIterator __first, _BidirectionalIterator __last, _Predicate __pred,
bidirectional_iterator_tag)
{
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
const difference_type __alloc_limit = 4; // might want to make this a function of trivial assignment
// Either prove all true and return __first or point to first false
while (true)
{
if (__first == __last)
return __first;
if (!__pred(*__first))
break;
++__first;
}
// __first points to first false, everything prior to __first is already set.
// Either prove [__first, __last) is all false and return __first, or point __last to last true
do
{
if (__first == --__last)
return __first;
} while (!__pred(*__last));
// We now have a reduced range [__first, __last]
// *__first is known to be false
// *__last is known to be true
// __len >= 2
difference_type __len = _VSTD::distance(__first, __last) + 1;
pair<value_type*, ptrdiff_t> __p(0, 0);
unique_ptr<value_type, __return_temporary_buffer> __h;
if (__len >= __alloc_limit)
{
__p = _VSTD::get_temporary_buffer<value_type>(__len);
__h.reset(__p.first);
}
return _VSTD::__stable_partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, __len, __p, bidirectional_iterator_tag());
}
template <class _ForwardIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY
_ForwardIterator
stable_partition(_ForwardIterator __first, _ForwardIterator __last, _Predicate __pred)
{
return _VSTD::__stable_partition<typename add_lvalue_reference<_Predicate>::type>
(__first, __last, __pred, typename iterator_traits<_ForwardIterator>::iterator_category());
}
// is_sorted_until
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
is_sorted_until(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
if (__first != __last)
{
_ForwardIterator __i = __first;
while (++__i != __last)
{
if (__comp(*__i, *__first))
return __i;
__first = __i;
}
}
return __last;
}
template<class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
is_sorted_until(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::is_sorted_until(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>());
}
// is_sorted
template <class _ForwardIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_sorted(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
{
return _VSTD::is_sorted_until(__first, __last, __comp) == __last;
}
template<class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_sorted(_ForwardIterator __first, _ForwardIterator __last)
{
return _VSTD::is_sorted(__first, __last, __less<typename iterator_traits<_ForwardIterator>::value_type>());
}
// sort
// stable, 2-3 compares, 0-2 swaps
template <class _Compare, class _ForwardIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 unsigned
__sort3(_ForwardIterator __x, _ForwardIterator __y, _ForwardIterator __z, _Compare __c)
{
unsigned __r = 0;
if (!__c(*__y, *__x)) // if x <= y
{
if (!__c(*__z, *__y)) // if y <= z
return __r; // x <= y && y <= z
// x <= y && y > z
swap(*__y, *__z); // x <= z && y < z
__r = 1;
if (__c(*__y, *__x)) // if x > y
{
swap(*__x, *__y); // x < y && y <= z
__r = 2;
}
return __r; // x <= y && y < z
}
if (__c(*__z, *__y)) // x > y, if y > z
{
swap(*__x, *__z); // x < y && y < z
__r = 1;
return __r;
}
swap(*__x, *__y); // x > y && y <= z
__r = 1; // x < y && x <= z
if (__c(*__z, *__y)) // if y > z
{
swap(*__y, *__z); // x <= y && y < z
__r = 2;
}
return __r;
} // x <= y && y <= z
// stable, 3-6 compares, 0-5 swaps
template <class _Compare, class _ForwardIterator>
unsigned
__sort4(_ForwardIterator __x1, _ForwardIterator __x2, _ForwardIterator __x3,
_ForwardIterator __x4, _Compare __c)
{
unsigned __r = _VSTD::__sort3<_Compare>(__x1, __x2, __x3, __c);
if (__c(*__x4, *__x3))
{
swap(*__x3, *__x4);
++__r;
if (__c(*__x3, *__x2))
{
swap(*__x2, *__x3);
++__r;
if (__c(*__x2, *__x1))
{
swap(*__x1, *__x2);
++__r;
}
}
}
return __r;
}
// stable, 4-10 compares, 0-9 swaps
template <class _Compare, class _ForwardIterator>
_LIBCPP_HIDDEN
unsigned
__sort5(_ForwardIterator __x1, _ForwardIterator __x2, _ForwardIterator __x3,
_ForwardIterator __x4, _ForwardIterator __x5, _Compare __c)
{
unsigned __r = _VSTD::__sort4<_Compare>(__x1, __x2, __x3, __x4, __c);
if (__c(*__x5, *__x4))
{
swap(*__x4, *__x5);
++__r;
if (__c(*__x4, *__x3))
{
swap(*__x3, *__x4);
++__r;
if (__c(*__x3, *__x2))
{
swap(*__x2, *__x3);
++__r;
if (__c(*__x2, *__x1))
{
swap(*__x1, *__x2);
++__r;
}
}
}
}
return __r;
}
// Assumes size > 0
template <class _Compare, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__selection_sort(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
_BidirectionalIterator __lm1 = __last;
for (--__lm1; __first != __lm1; ++__first)
{
_BidirectionalIterator __i = _VSTD::min_element<_BidirectionalIterator,
typename add_lvalue_reference<_Compare>::type>
(__first, __last, __comp);
if (__i != __first)
swap(*__first, *__i);
}
}
template <class _Compare, class _BidirectionalIterator>
void
__insertion_sort(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
if (__first != __last)
{
_BidirectionalIterator __i = __first;
for (++__i; __i != __last; ++__i)
{
_BidirectionalIterator __j = __i;
value_type __t(_VSTD::move(*__j));
for (_BidirectionalIterator __k = __i; __k != __first && __comp(__t, *--__k); --__j)
*__j = _VSTD::move(*__k);
*__j = _VSTD::move(__t);
}
}
}
template <class _Compare, class _RandomAccessIterator>
void
__insertion_sort_3(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
_RandomAccessIterator __j = __first+2;
_VSTD::__sort3<_Compare>(__first, __first+1, __j, __comp);
for (_RandomAccessIterator __i = __j+1; __i != __last; ++__i)
{
if (__comp(*__i, *__j))
{
value_type __t(_VSTD::move(*__i));
_RandomAccessIterator __k = __j;
__j = __i;
do
{
*__j = _VSTD::move(*__k);
__j = __k;
} while (__j != __first && __comp(__t, *--__k));
*__j = _VSTD::move(__t);
}
__j = __i;
}
}
template <class _Compare, class _RandomAccessIterator>
bool
__insertion_sort_incomplete(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
switch (__last - __first)
{
case 0:
case 1:
return true;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return true;
case 3:
_VSTD::__sort3<_Compare>(__first, __first+1, --__last, __comp);
return true;
case 4:
_VSTD::__sort4<_Compare>(__first, __first+1, __first+2, --__last, __comp);
return true;
case 5:
_VSTD::__sort5<_Compare>(__first, __first+1, __first+2, __first+3, --__last, __comp);
return true;
}
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
_RandomAccessIterator __j = __first+2;
_VSTD::__sort3<_Compare>(__first, __first+1, __j, __comp);
const unsigned __limit = 8;
unsigned __count = 0;
for (_RandomAccessIterator __i = __j+1; __i != __last; ++__i)
{
if (__comp(*__i, *__j))
{
value_type __t(_VSTD::move(*__i));
_RandomAccessIterator __k = __j;
__j = __i;
do
{
*__j = _VSTD::move(*__k);
__j = __k;
} while (__j != __first && __comp(__t, *--__k));
*__j = _VSTD::move(__t);
if (++__count == __limit)
return ++__i == __last;
}
__j = __i;
}
return true;
}
template <class _Compare, class _BidirectionalIterator>
void
__insertion_sort_move(_BidirectionalIterator __first1, _BidirectionalIterator __last1,
typename iterator_traits<_BidirectionalIterator>::value_type* __first2, _Compare __comp)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
if (__first1 != __last1)
{
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__first2, __d);
value_type* __last2 = __first2;
::new ((void*)__last2) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
for (++__last2; ++__first1 != __last1; ++__last2)
{
value_type* __j2 = __last2;
value_type* __i2 = __j2;
if (__comp(*__first1, *--__i2))
{
::new ((void*)__j2) value_type(_VSTD::move(*__i2));
__d.template __incr<value_type>();
for (--__j2; __i2 != __first2 && __comp(*__first1, *--__i2); --__j2)
*__j2 = _VSTD::move(*__i2);
*__j2 = _VSTD::move(*__first1);
}
else
{
::new ((void*)__j2) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
}
}
__h.release();
}
}
template <class _Compare, class _RandomAccessIterator>
void
__sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
const difference_type __limit = is_trivially_copy_constructible<value_type>::value &&
is_trivially_copy_assignable<value_type>::value ? 30 : 6;
while (true)
{
__restart:
difference_type __len = __last - __first;
switch (__len)
{
case 0:
case 1:
return;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return;
case 3:
_VSTD::__sort3<_Compare>(__first, __first+1, --__last, __comp);
return;
case 4:
_VSTD::__sort4<_Compare>(__first, __first+1, __first+2, --__last, __comp);
return;
case 5:
_VSTD::__sort5<_Compare>(__first, __first+1, __first+2, __first+3, --__last, __comp);
return;
}
if (__len <= __limit)
{
_VSTD::__insertion_sort_3<_Compare>(__first, __last, __comp);
return;
}
// __len > 5
_RandomAccessIterator __m = __first;
_RandomAccessIterator __lm1 = __last;
--__lm1;
unsigned __n_swaps;
{
difference_type __delta;
if (__len >= 1000)
{
__delta = __len/2;
__m += __delta;
__delta /= 2;
__n_swaps = _VSTD::__sort5<_Compare>(__first, __first + __delta, __m, __m+__delta, __lm1, __comp);
}
else
{
__delta = __len/2;
__m += __delta;
__n_swaps = _VSTD::__sort3<_Compare>(__first, __m, __lm1, __comp);
}
}
// *__m is median
// partition [__first, __m) < *__m and *__m <= [__m, __last)
// (this inhibits tossing elements equivalent to __m around unnecessarily)
_RandomAccessIterator __i = __first;
_RandomAccessIterator __j = __lm1;
// j points beyond range to be tested, *__m is known to be <= *__lm1
// The search going up is known to be guarded but the search coming down isn't.
// Prime the downward search with a guard.
if (!__comp(*__i, *__m)) // if *__first == *__m
{
// *__first == *__m, *__first doesn't go in first part
// manually guard downward moving __j against __i
while (true)
{
if (__i == --__j)
{
// *__first == *__m, *__m <= all other elements
// Parition instead into [__first, __i) == *__first and *__first < [__i, __last)
++__i; // __first + 1
__j = __last;
if (!__comp(*__first, *--__j)) // we need a guard if *__first == *(__last-1)
{
while (true)
{
if (__i == __j)
return; // [__first, __last) all equivalent elements
if (__comp(*__first, *__i))
{
swap(*__i, *__j);
++__n_swaps;
++__i;
break;
}
++__i;
}
}
// [__first, __i) == *__first and *__first < [__j, __last) and __j == __last - 1
if (__i == __j)
return;
while (true)
{
while (!__comp(*__first, *__i))
++__i;
while (__comp(*__first, *--__j))
;
if (__i >= __j)
break;
swap(*__i, *__j);
++__n_swaps;
++__i;
}
// [__first, __i) == *__first and *__first < [__i, __last)
// The first part is sorted, sort the second part
// _VSTD::__sort<_Compare>(__i, __last, __comp);
__first = __i;
goto __restart;
}
if (__comp(*__j, *__m))
{
swap(*__i, *__j);
++__n_swaps;
break; // found guard for downward moving __j, now use unguarded partition
}
}
}
// It is known that *__i < *__m
++__i;
// j points beyond range to be tested, *__m is known to be <= *__lm1
// if not yet partitioned...
if (__i < __j)
{
// known that *(__i - 1) < *__m
// known that __i <= __m
while (true)
{
// __m still guards upward moving __i
while (__comp(*__i, *__m))
++__i;
// It is now known that a guard exists for downward moving __j
while (!__comp(*--__j, *__m))
;
if (__i > __j)
break;
swap(*__i, *__j);
++__n_swaps;
// It is known that __m != __j
// If __m just moved, follow it
if (__m == __i)
__m = __j;
++__i;
}
}
// [__first, __i) < *__m and *__m <= [__i, __last)
if (__i != __m && __comp(*__m, *__i))
{
swap(*__i, *__m);
++__n_swaps;
}
// [__first, __i) < *__i and *__i <= [__i+1, __last)
// If we were given a perfect partition, see if insertion sort is quick...
if (__n_swaps == 0)
{
bool __fs = _VSTD::__insertion_sort_incomplete<_Compare>(__first, __i, __comp);
if (_VSTD::__insertion_sort_incomplete<_Compare>(__i+1, __last, __comp))
{
if (__fs)
return;
__last = __i;
continue;
}
else
{
if (__fs)
{
__first = ++__i;
continue;
}
}
}
// sort smaller range with recursive call and larger with tail recursion elimination
if (__i - __first < __last - __i)
{
_VSTD::__sort<_Compare>(__first, __i, __comp);
// _VSTD::__sort<_Compare>(__i+1, __last, __comp);
__first = ++__i;
}
else
{
_VSTD::__sort<_Compare>(__i+1, __last, __comp);
// _VSTD::__sort<_Compare>(__first, __i, __comp);
__last = __i;
}
}
}
template <class _Compare, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
void
__sort(_Tp** __first, _Tp** __last, __less<_Tp*>&)
{
__less<uintptr_t> __comp;
_VSTD::__sort<__less<uintptr_t>&, uintptr_t*>((uintptr_t*)__first, (uintptr_t*)__last, __comp);
}
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<char>&, char*>(char*, char*, __less<char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<wchar_t>&, wchar_t*>(wchar_t*, wchar_t*, __less<wchar_t>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<signed char>&, signed char*>(signed char*, signed char*, __less<signed char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned char>&, unsigned char*>(unsigned char*, unsigned char*, __less<unsigned char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<short>&, short*>(short*, short*, __less<short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned short>&, unsigned short*>(unsigned short*, unsigned short*, __less<unsigned short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<int>&, int*>(int*, int*, __less<int>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned>&, unsigned*>(unsigned*, unsigned*, __less<unsigned>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<long>&, long*>(long*, long*, __less<long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned long>&, unsigned long*>(unsigned long*, unsigned long*, __less<unsigned long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<long long>&, long long*>(long long*, long long*, __less<long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, __less<unsigned long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<float>&, float*>(float*, float*, __less<float>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<double>&, double*>(double*, double*, __less<double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS void __sort<__less<long double>&, long double*>(long double*, long double*, __less<long double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<char>&, char*>(char*, char*, __less<char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<wchar_t>&, wchar_t*>(wchar_t*, wchar_t*, __less<wchar_t>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<signed char>&, signed char*>(signed char*, signed char*, __less<signed char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned char>&, unsigned char*>(unsigned char*, unsigned char*, __less<unsigned char>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<short>&, short*>(short*, short*, __less<short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned short>&, unsigned short*>(unsigned short*, unsigned short*, __less<unsigned short>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<int>&, int*>(int*, int*, __less<int>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned>&, unsigned*>(unsigned*, unsigned*, __less<unsigned>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<long>&, long*>(long*, long*, __less<long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned long>&, unsigned long*>(unsigned long*, unsigned long*, __less<unsigned long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<long long>&, long long*>(long long*, long long*, __less<long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, __less<unsigned long long>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<float>&, float*>(float*, float*, __less<float>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<double>&, double*>(double*, double*, __less<double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS bool __insertion_sort_incomplete<__less<long double>&, long double*>(long double*, long double*, __less<long double>&))
_LIBCPP_EXTERN_TEMPLATE(_LIBCPP_FUNC_VIS unsigned __sort5<__less<long double>&, long double*>(long double*, long double*, long double*, long double*, long double*, __less<long double>&))
// lower_bound
template <class _Compare, class _ForwardIterator, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__comp(*__m, __value_))
{
__first = ++__m;
__len -= __l2 + 1;
}
else
__len = __l2;
}
return __first;
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename add_lvalue_reference<_Compare>::type _Comp_ref;
return _VSTD::__lower_bound<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
lower_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::lower_bound(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
// upper_bound
template <class _Compare, class _ForwardIterator, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
__upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__comp(__value_, *__m))
__len = __l2;
else
{
__first = ++__m;
__len -= __l2 + 1;
}
}
return __first;
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename add_lvalue_reference<_Compare>::type _Comp_ref;
return _VSTD::__upper_bound<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_ForwardIterator
upper_bound(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::upper_bound(__first, __last, __value_,
__less<_Tp, typename iterator_traits<_ForwardIterator>::value_type>());
}
// equal_range
template <class _Compare, class _ForwardIterator, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_ForwardIterator, _ForwardIterator>
__equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__comp(*__m, __value_))
{
__first = ++__m;
__len -= __l2 + 1;
}
else if (__comp(__value_, *__m))
{
__last = __m;
__len = __l2;
}
else
{
_ForwardIterator __mp1 = __m;
return pair<_ForwardIterator, _ForwardIterator>
(
_VSTD::__lower_bound<_Compare>(__first, __m, __value_, __comp),
_VSTD::__upper_bound<_Compare>(++__mp1, __last, __value_, __comp)
);
}
}
return pair<_ForwardIterator, _ForwardIterator>(__first, __first);
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_ForwardIterator, _ForwardIterator>
equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__equal_range<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_ForwardIterator, _ForwardIterator>
equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::equal_range(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
// binary_search
template <class _Compare, class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
__binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
__first = _VSTD::__lower_bound<_Compare>(__first, __last, __value_, __comp);
return __first != __last && !__comp(__value_, *__first);
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__binary_search<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::binary_search(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
// merge
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first2, *__first1))
{
*__result = *__first2;
++__first2;
}
else
{
*__result = *__first1;
++__first1;
}
}
return _VSTD::copy(__first2, __last2, __result);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__merge<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::merge(__first1, __last1, __first2, __last2, __result, __less<__v1, __v2>());
}
// inplace_merge
template <class _Compare, class _InputIterator1, class _InputIterator2,
class _OutputIterator>
void __half_inplace_merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
_OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
{
_VSTD::move(__first1, __last1, __result);
return;
}
if (__comp(*__first2, *__first1))
{
*__result = _VSTD::move(*__first2);
++__first2;
}
else
{
*__result = _VSTD::move(*__first1);
++__first1;
}
}
// __first2 through __last2 are already in the right spot.
}
template <class _Compare, class _BidirectionalIterator>
void
__buffered_inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp, typename iterator_traits<_BidirectionalIterator>::difference_type __len1,
typename iterator_traits<_BidirectionalIterator>::difference_type __len2,
typename iterator_traits<_BidirectionalIterator>::value_type* __buff)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h2(__buff, __d);
if (__len1 <= __len2)
{
value_type* __p = __buff;
for (_BidirectionalIterator __i = __first; __i != __middle; __d.template __incr<value_type>(), (void) ++__i, (void) ++__p)
::new ((void*)__p) value_type(_VSTD::move(*__i));
_VSTD::__half_inplace_merge<_Compare>(__buff, __p, __middle, __last, __first, __comp);
}
else
{
value_type* __p = __buff;
for (_BidirectionalIterator __i = __middle; __i != __last; __d.template __incr<value_type>(), (void) ++__i, (void) ++__p)
::new ((void*)__p) value_type(_VSTD::move(*__i));
typedef reverse_iterator<_BidirectionalIterator> _RBi;
typedef reverse_iterator<value_type*> _Rv;
typedef __invert<_Compare> _Inverted;
_VSTD::__half_inplace_merge<_Inverted>(_Rv(__p), _Rv(__buff),
_RBi(__middle), _RBi(__first),
_RBi(__last), _Inverted(__comp));
}
}
template <class _Compare, class _BidirectionalIterator>
void
__inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp, typename iterator_traits<_BidirectionalIterator>::difference_type __len1,
typename iterator_traits<_BidirectionalIterator>::difference_type __len2,
typename iterator_traits<_BidirectionalIterator>::value_type* __buff, ptrdiff_t __buff_size)
{
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
while (true)
{
// if __middle == __last, we're done
if (__len2 == 0)
return;
if (__len1 <= __buff_size || __len2 <= __buff_size)
return _VSTD::__buffered_inplace_merge<_Compare>
(__first, __middle, __last, __comp, __len1, __len2, __buff);
// shrink [__first, __middle) as much as possible (with no moves), returning if it shrinks to 0
for (; true; ++__first, (void) --__len1)
{
if (__len1 == 0)
return;
if (__comp(*__middle, *__first))
break;
}
// __first < __middle < __last
// *__first > *__middle
// partition [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last) such that
// all elements in:
// [__first, __m1) <= [__middle, __m2)
// [__middle, __m2) < [__m1, __middle)
// [__m1, __middle) <= [__m2, __last)
// and __m1 or __m2 is in the middle of its range
_BidirectionalIterator __m1; // "median" of [__first, __middle)
_BidirectionalIterator __m2; // "median" of [__middle, __last)
difference_type __len11; // distance(__first, __m1)
difference_type __len21; // distance(__middle, __m2)
// binary search smaller range
if (__len1 < __len2)
{ // __len >= 1, __len2 >= 2
__len21 = __len2 / 2;
__m2 = __middle;
_VSTD::advance(__m2, __len21);
__m1 = _VSTD::__upper_bound<_Compare>(__first, __middle, *__m2, __comp);
__len11 = _VSTD::distance(__first, __m1);
}
else
{
if (__len1 == 1)
{ // __len1 >= __len2 && __len2 > 0, therefore __len2 == 1
// It is known *__first > *__middle
swap(*__first, *__middle);
return;
}
// __len1 >= 2, __len2 >= 1
__len11 = __len1 / 2;
__m1 = __first;
_VSTD::advance(__m1, __len11);
__m2 = _VSTD::__lower_bound<_Compare>(__middle, __last, *__m1, __comp);
__len21 = _VSTD::distance(__middle, __m2);
}
difference_type __len12 = __len1 - __len11; // distance(__m1, __middle)
difference_type __len22 = __len2 - __len21; // distance(__m2, __last)
// [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last)
// swap middle two partitions
__middle = _VSTD::rotate(__m1, __middle, __m2);
// __len12 and __len21 now have swapped meanings
// merge smaller range with recursive call and larger with tail recursion elimination
if (__len11 + __len21 < __len12 + __len22)
{
_VSTD::__inplace_merge<_Compare>(__first, __m1, __middle, __comp, __len11, __len21, __buff, __buff_size);
// _VSTD::__inplace_merge<_Compare>(__middle, __m2, __last, __comp, __len12, __len22, __buff, __buff_size);
__first = __middle;
__middle = __m2;
__len1 = __len12;
__len2 = __len22;
}
else
{
_VSTD::__inplace_merge<_Compare>(__middle, __m2, __last, __comp, __len12, __len22, __buff, __buff_size);
// _VSTD::__inplace_merge<_Compare>(__first, __m1, __middle, __comp, __len11, __len21, __buff, __buff_size);
__last = __middle;
__middle = __m1;
__len1 = __len11;
__len2 = __len21;
}
}
}
template <class _BidirectionalIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY
void
inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
difference_type __len1 = _VSTD::distance(__first, __middle);
difference_type __len2 = _VSTD::distance(__middle, __last);
difference_type __buf_size = _VSTD::min(__len1, __len2);
pair<value_type*, ptrdiff_t> __buf = _VSTD::get_temporary_buffer<value_type>(__buf_size);
unique_ptr<value_type, __return_temporary_buffer> __h(__buf.first);
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__inplace_merge<_Comp_ref>(__first, __middle, __last, __comp, __len1, __len2,
__buf.first, __buf.second);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last)
{
_VSTD::inplace_merge(__first, __middle, __last,
__less<typename iterator_traits<_BidirectionalIterator>::value_type>());
}
// stable_sort
template <class _Compare, class _InputIterator1, class _InputIterator2>
void
__merge_move_construct(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
typename iterator_traits<_InputIterator1>::value_type* __result, _Compare __comp)
{
typedef typename iterator_traits<_InputIterator1>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h(__result, __d);
for (; true; ++__result)
{
if (__first1 == __last1)
{
for (; __first2 != __last2; ++__first2, ++__result, (void)__d.template __incr<value_type>())
::new ((void*)__result) value_type(_VSTD::move(*__first2));
__h.release();
return;
}
if (__first2 == __last2)
{
for (; __first1 != __last1; ++__first1, ++__result, (void)__d.template __incr<value_type>())
::new ((void*)__result) value_type(_VSTD::move(*__first1));
__h.release();
return;
}
if (__comp(*__first2, *__first1))
{
::new ((void*)__result) value_type(_VSTD::move(*__first2));
__d.template __incr<value_type>();
++__first2;
}
else
{
::new ((void*)__result) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
++__first1;
}
}
}
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
void
__merge_move_assign(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
_OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
{
for (; __first1 != __last1; ++__first1, (void) ++__result)
*__result = _VSTD::move(*__first1);
return;
}
if (__comp(*__first2, *__first1))
{
*__result = _VSTD::move(*__first2);
++__first2;
}
else
{
*__result = _VSTD::move(*__first1);
++__first1;
}
}
for (; __first2 != __last2; ++__first2, (void) ++__result)
*__result = _VSTD::move(*__first2);
}
template <class _Compare, class _RandomAccessIterator>
void
__stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
typename iterator_traits<_RandomAccessIterator>::value_type* __buff, ptrdiff_t __buff_size);
template <class _Compare, class _RandomAccessIterator>
void
__stable_sort_move(_RandomAccessIterator __first1, _RandomAccessIterator __last1, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
typename iterator_traits<_RandomAccessIterator>::value_type* __first2)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
switch (__len)
{
case 0:
return;
case 1:
::new ((void*)__first2) value_type(_VSTD::move(*__first1));
return;
case 2:
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h2(__first2, __d);
if (__comp(*--__last1, *__first1))
{
::new ((void*)__first2) value_type(_VSTD::move(*__last1));
__d.template __incr<value_type>();
++__first2;
::new ((void*)__first2) value_type(_VSTD::move(*__first1));
}
else
{
::new ((void*)__first2) value_type(_VSTD::move(*__first1));
__d.template __incr<value_type>();
++__first2;
::new ((void*)__first2) value_type(_VSTD::move(*__last1));
}
__h2.release();
return;
}
if (__len <= 8)
{
_VSTD::__insertion_sort_move<_Compare>(__first1, __last1, __first2, __comp);
return;
}
typename iterator_traits<_RandomAccessIterator>::difference_type __l2 = __len / 2;
_RandomAccessIterator __m = __first1 + __l2;
_VSTD::__stable_sort<_Compare>(__first1, __m, __comp, __l2, __first2, __l2);
_VSTD::__stable_sort<_Compare>(__m, __last1, __comp, __len - __l2, __first2 + __l2, __len - __l2);
_VSTD::__merge_move_construct<_Compare>(__first1, __m, __m, __last1, __first2, __comp);
}
template <class _Tp>
struct __stable_sort_switch
{
static const unsigned value = 128*is_trivially_copy_assignable<_Tp>::value;
};
template <class _Compare, class _RandomAccessIterator>
void
__stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
typename iterator_traits<_RandomAccessIterator>::value_type* __buff, ptrdiff_t __buff_size)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
switch (__len)
{
case 0:
case 1:
return;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return;
}
if (__len <= static_cast<difference_type>(__stable_sort_switch<value_type>::value))
{
_VSTD::__insertion_sort<_Compare>(__first, __last, __comp);
return;
}
typename iterator_traits<_RandomAccessIterator>::difference_type __l2 = __len / 2;
_RandomAccessIterator __m = __first + __l2;
if (__len <= __buff_size)
{
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h2(__buff, __d);
_VSTD::__stable_sort_move<_Compare>(__first, __m, __comp, __l2, __buff);
__d.__set(__l2, (value_type*)nullptr);
_VSTD::__stable_sort_move<_Compare>(__m, __last, __comp, __len - __l2, __buff + __l2);
__d.__set(__len, (value_type*)nullptr);
_VSTD::__merge_move_assign<_Compare>(__buff, __buff + __l2, __buff + __l2, __buff + __len, __first, __comp);
// _VSTD::__merge<_Compare>(move_iterator<value_type*>(__buff),
// move_iterator<value_type*>(__buff + __l2),
// move_iterator<_RandomAccessIterator>(__buff + __l2),
// move_iterator<_RandomAccessIterator>(__buff + __len),
// __first, __comp);
return;
}
_VSTD::__stable_sort<_Compare>(__first, __m, __comp, __l2, __buff, __buff_size);
_VSTD::__stable_sort<_Compare>(__m, __last, __comp, __len - __l2, __buff, __buff_size);
_VSTD::__inplace_merge<_Compare>(__first, __m, __last, __comp, __l2, __len - __l2, __buff, __buff_size);
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY
void
stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __len = __last - __first;
pair<value_type*, ptrdiff_t> __buf(0, 0);
unique_ptr<value_type, __return_temporary_buffer> __h;
if (__len > static_cast<difference_type>(__stable_sort_switch<value_type>::value))
{
__buf = _VSTD::get_temporary_buffer<value_type>(__len);
__h.reset(__buf.first);
}
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__stable_sort<_Comp_ref>(__first, __last, __comp, __len, __buf.first, __buf.second);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
stable_sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::stable_sort(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// is_heap_until
template <class _RandomAccessIterator, class _Compare>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _RandomAccessIterator
is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __len = __last - __first;
difference_type __p = 0;
difference_type __c = 1;
_RandomAccessIterator __pp = __first;
while (__c < __len)
{
_RandomAccessIterator __cp = __first + __c;
if (__comp(*__pp, *__cp))
return __cp;
++__c;
++__cp;
if (__c == __len)
return __last;
if (__comp(*__pp, *__cp))
return __cp;
++__p;
++__pp;
__c = 2 * __p + 1;
}
return __last;
}
template<class _RandomAccessIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_RandomAccessIterator
is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
return _VSTD::is_heap_until(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// is_heap
template <class _RandomAccessIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
return _VSTD::is_heap_until(__first, __last, __comp) == __last;
}
template<class _RandomAccessIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
return _VSTD::is_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// push_heap
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__sift_up(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len)
{
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
if (__len > 1)
{
__len = (__len - 2) / 2;
_RandomAccessIterator __ptr = __first + __len;
if (__comp(*__ptr, *--__last))
{
value_type __t(_VSTD::move(*__last));
do
{
*__last = _VSTD::move(*__ptr);
__last = __ptr;
if (__len == 0)
break;
__len = (__len - 1) / 2;
__ptr = __first + __len;
} while (__comp(*__ptr, __t));
*__last = _VSTD::move(__t);
}
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__sift_up<_Comp_ref>(__first, __last, __comp, __last - __first);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::push_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// pop_heap
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__sift_down(_RandomAccessIterator __first, _RandomAccessIterator /*__last*/,
_Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len,
_RandomAccessIterator __start)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type;
// left-child of __start is at 2 * __start + 1
// right-child of __start is at 2 * __start + 2
difference_type __child = __start - __first;
if (__len < 2 || (__len - 2) / 2 < __child)
return;
__child = 2 * __child + 1;
_RandomAccessIterator __child_i = __first + __child;
if ((__child + 1) < __len && __comp(*__child_i, *(__child_i + 1))) {
// right-child exists and is greater than left-child
++__child_i;
++__child;
}
// check if we are in heap-order
if (__comp(*__child_i, *__start))
// we are, __start is larger than it's largest child
return;
value_type __top(_VSTD::move(*__start));
do
{
// we are not in heap-order, swap the parent with its largest child
*__start = _VSTD::move(*__child_i);
__start = __child_i;
if ((__len - 2) / 2 < __child)
break;
// recompute the child based off of the updated parent
__child = 2 * __child + 1;
__child_i = __first + __child;
if ((__child + 1) < __len && __comp(*__child_i, *(__child_i + 1))) {
// right-child exists and is greater than left-child
++__child_i;
++__child;
}
// check if we are in heap-order
} while (!__comp(*__child_i, __top));
*__start = _VSTD::move(__top);
}
template <class _Compare, class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp,
typename iterator_traits<_RandomAccessIterator>::difference_type __len)
{
if (__len > 1)
{
swap(*__first, *--__last);
_VSTD::__sift_down<_Compare>(__first, __last, __comp, __len - 1, __first);
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__pop_heap<_Comp_ref>(__first, __last, __comp, __last - __first);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
pop_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::pop_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// make_heap
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __n = __last - __first;
if (__n > 1)
{
// start from the first parent, there is no need to consider children
for (difference_type __start = (__n - 2) / 2; __start >= 0; --__start)
{
_VSTD::__sift_down<_Compare>(__first, __last, __comp, __n, __first + __start);
}
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__make_heap<_Comp_ref>(__first, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
make_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::make_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// sort_heap
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 void
__sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
for (difference_type __n = __last - __first; __n > 1; --__last, (void) --__n)
_VSTD::__pop_heap<_Compare>(__first, __last, __comp, __n);
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__sort_heap<_Comp_ref>(__first, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::sort_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// partial_sort
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 void
__partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
_Compare __comp)
{
_VSTD::__make_heap<_Compare>(__first, __middle, __comp);
typename iterator_traits<_RandomAccessIterator>::difference_type __len = __middle - __first;
for (_RandomAccessIterator __i = __middle; __i != __last; ++__i)
{
if (__comp(*__i, *__first))
{
swap(*__i, *__first);
_VSTD::__sift_down<_Compare>(__first, __middle, __comp, __len, __first);
}
}
_VSTD::__sort_heap<_Compare>(__first, __middle, __comp);
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last,
_Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__partial_sort<_Comp_ref>(__first, __middle, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
partial_sort(_RandomAccessIterator __first, _RandomAccessIterator __middle, _RandomAccessIterator __last)
{
_VSTD::partial_sort(__first, __middle, __last,
__less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// partial_sort_copy
template <class _Compare, class _InputIterator, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _RandomAccessIterator
__partial_sort_copy(_InputIterator __first, _InputIterator __last,
_RandomAccessIterator __result_first, _RandomAccessIterator __result_last, _Compare __comp)
{
_RandomAccessIterator __r = __result_first;
if (__r != __result_last)
{
for (; __first != __last && __r != __result_last; ++__first, (void) ++__r)
*__r = *__first;
_VSTD::__make_heap<_Compare>(__result_first, __r, __comp);
typename iterator_traits<_RandomAccessIterator>::difference_type __len = __r - __result_first;
for (; __first != __last; ++__first)
if (__comp(*__first, *__result_first))
{
*__result_first = *__first;
_VSTD::__sift_down<_Compare>(__result_first, __r, __comp, __len, __result_first);
}
_VSTD::__sort_heap<_Compare>(__result_first, __r, __comp);
}
return __r;
}
template <class _InputIterator, class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_RandomAccessIterator
partial_sort_copy(_InputIterator __first, _InputIterator __last,
_RandomAccessIterator __result_first, _RandomAccessIterator __result_last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__partial_sort_copy<_Comp_ref>(__first, __last, __result_first, __result_last, __comp);
}
template <class _InputIterator, class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_RandomAccessIterator
partial_sort_copy(_InputIterator __first, _InputIterator __last,
_RandomAccessIterator __result_first, _RandomAccessIterator __result_last)
{
return _VSTD::partial_sort_copy(__first, __last, __result_first, __result_last,
__less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// nth_element
template<class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 bool
__nth_element_find_guard(_RandomAccessIterator& __i, _RandomAccessIterator& __j,
_RandomAccessIterator __m, _Compare __comp)
{
// manually guard downward moving __j against __i
while (true) {
if (__i == --__j) {
return false;
}
if (__comp(*__j, *__m)) {
return true; // found guard for downward moving __j, now use unguarded partition
}
}
}
template <class _Compare, class _RandomAccessIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX11 void
__nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last, _Compare __comp)
{
// _Compare is known to be a reference type
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
const difference_type __limit = 7;
while (true)
{
if (__nth == __last)
return;
difference_type __len = __last - __first;
switch (__len)
{
case 0:
case 1:
return;
case 2:
if (__comp(*--__last, *__first))
swap(*__first, *__last);
return;
case 3:
{
_RandomAccessIterator __m = __first;
_VSTD::__sort3<_Compare>(__first, ++__m, --__last, __comp);
return;
}
}
if (__len <= __limit)
{
_VSTD::__selection_sort<_Compare>(__first, __last, __comp);
return;
}
// __len > __limit >= 3
_RandomAccessIterator __m = __first + __len/2;
_RandomAccessIterator __lm1 = __last;
unsigned __n_swaps = _VSTD::__sort3<_Compare>(__first, __m, --__lm1, __comp);
// *__m is median
// partition [__first, __m) < *__m and *__m <= [__m, __last)
// (this inhibits tossing elements equivalent to __m around unnecessarily)
_RandomAccessIterator __i = __first;
_RandomAccessIterator __j = __lm1;
// j points beyond range to be tested, *__lm1 is known to be <= *__m
// The search going up is known to be guarded but the search coming down isn't.
// Prime the downward search with a guard.
if (!__comp(*__i, *__m)) // if *__first == *__m
{
// *__first == *__m, *__first doesn't go in first part
if (_VSTD::__nth_element_find_guard<_Compare>(__i, __j, __m, __comp)) {
swap(*__i, *__j);
++__n_swaps;
} else {
// *__first == *__m, *__m <= all other elements
// Partition instead into [__first, __i) == *__first and *__first < [__i, __last)
++__i; // __first + 1
__j = __last;
if (!__comp(*__first, *--__j)) { // we need a guard if *__first == *(__last-1)
while (true) {
if (__i == __j) {
return; // [__first, __last) all equivalent elements
} else if (__comp(*__first, *__i)) {
swap(*__i, *__j);
++__n_swaps;
++__i;
break;
}
++__i;
}
}
// [__first, __i) == *__first and *__first < [__j, __last) and __j == __last - 1
if (__i == __j) {
return;
}
while (true) {
while (!__comp(*__first, *__i))
++__i;
while (__comp(*__first, *--__j))
;
if (__i >= __j)
break;
swap(*__i, *__j);
++__n_swaps;
++__i;
}
// [__first, __i) == *__first and *__first < [__i, __last)
// The first part is sorted,
if (__nth < __i) {
return;
}
// __nth_element the second part
// _VSTD::__nth_element<_Compare>(__i, __nth, __last, __comp);
__first = __i;
continue;
}
}
++__i;
// j points beyond range to be tested, *__lm1 is known to be <= *__m
// if not yet partitioned...
if (__i < __j)
{
// known that *(__i - 1) < *__m
while (true)
{
// __m still guards upward moving __i
while (__comp(*__i, *__m))
++__i;
// It is now known that a guard exists for downward moving __j
while (!__comp(*--__j, *__m))
;
if (__i >= __j)
break;
swap(*__i, *__j);
++__n_swaps;
// It is known that __m != __j
// If __m just moved, follow it
if (__m == __i)
__m = __j;
++__i;
}
}
// [__first, __i) < *__m and *__m <= [__i, __last)
if (__i != __m && __comp(*__m, *__i))
{
swap(*__i, *__m);
++__n_swaps;
}
// [__first, __i) < *__i and *__i <= [__i+1, __last)
if (__nth == __i)
return;
if (__n_swaps == 0)
{
// We were given a perfectly partitioned sequence. Coincidence?
if (__nth < __i)
{
// Check for [__first, __i) already sorted
__j = __m = __first;
while (true) {
if (++__j == __i) {
// [__first, __i) sorted
return;
}
if (__comp(*__j, *__m)) {
// not yet sorted, so sort
break;
}
__m = __j;
}
}
else
{
// Check for [__i, __last) already sorted
__j = __m = __i;
while (true) {
if (++__j == __last) {
// [__i, __last) sorted
return;
}
if (__comp(*__j, *__m)) {
// not yet sorted, so sort
break;
}
__m = __j;
}
}
}
// __nth_element on range containing __nth
if (__nth < __i)
{
// _VSTD::__nth_element<_Compare>(__first, __nth, __i, __comp);
__last = __i;
}
else
{
// _VSTD::__nth_element<_Compare>(__i+1, __nth, __last, __comp);
__first = ++__i;
}
}
}
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
_VSTD::__nth_element<_Comp_ref>(__first, __nth, __last, __comp);
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
nth_element(_RandomAccessIterator __first, _RandomAccessIterator __nth, _RandomAccessIterator __last)
{
_VSTD::nth_element(__first, __nth, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// sort
template <class _RandomAccessIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
if (__libcpp_is_constant_evaluated()) {
_VSTD::__partial_sort<_Comp_ref>(__first, __last, __last, _Comp_ref(__comp));
} else {
_VSTD::__sort<_Comp_ref>(_VSTD::__unwrap_iter(__first), _VSTD::__unwrap_iter(__last), _Comp_ref(__comp));
}
}
template <class _RandomAccessIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
_VSTD::sort(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
// includes
template <class _Compare, class _InputIterator1, class _InputIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_Compare __comp)
{
for (; __first2 != __last2; ++__first1)
{
if (__first1 == __last1 || __comp(*__first2, *__first1))
return false;
if (!__comp(*__first1, *__first2))
++__first2;
}
return true;
}
template <class _InputIterator1, class _InputIterator2, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__includes<_Comp_ref>(__first1, __last1, __first2, __last2, __comp);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2)
{
return _VSTD::includes(__first1, __last1, __first2, __last2,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
// set_union
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_union(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first2, *__first1))
{
*__result = *__first2;
++__first2;
}
else
{
if (!__comp(*__first1, *__first2))
++__first2;
*__result = *__first1;
++__first1;
}
}
return _VSTD::copy(__first2, __last2, __result);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_union(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_union<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_union(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_union(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
// set_intersection
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
while (__first1 != __last1 && __first2 != __last2)
{
if (__comp(*__first1, *__first2))
++__first1;
else
{
if (!__comp(*__first2, *__first1))
{
*__result = *__first1;
++__result;
++__first1;
}
++__first2;
}
}
return __result;
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_intersection<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_intersection(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_intersection(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
// set_difference
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
while (__first1 != __last1)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first1, *__first2))
{
*__result = *__first1;
++__result;
++__first1;
}
else
{
if (!__comp(*__first2, *__first1))
++__first1;
++__first2;
}
}
return __result;
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_difference<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_difference(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
// set_symmetric_difference
template <class _Compare, class _InputIterator1, class _InputIterator2, class _OutputIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _OutputIterator
__set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
while (__first1 != __last1)
{
if (__first2 == __last2)
return _VSTD::copy(__first1, __last1, __result);
if (__comp(*__first1, *__first2))
{
*__result = *__first1;
++__result;
++__first1;
}
else
{
if (__comp(*__first2, *__first1))
{
*__result = *__first2;
++__result;
}
else
++__first1;
++__first2;
}
}
return _VSTD::copy(__first2, __last2, __result);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__set_symmetric_difference<_Comp_ref>(__first1, __last1, __first2, __last2, __result, __comp);
}
template <class _InputIterator1, class _InputIterator2, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
set_symmetric_difference(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _OutputIterator __result)
{
return _VSTD::set_symmetric_difference(__first1, __last1, __first2, __last2, __result,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
// lexicographical_compare
template <class _Compare, class _InputIterator1, class _InputIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _Compare __comp)
{
for (; __first2 != __last2; ++__first1, (void) ++__first2)
{
if (__first1 == __last1 || __comp(*__first1, *__first2))
return true;
if (__comp(*__first2, *__first1))
return false;
}
return false;
}
template <class _InputIterator1, class _InputIterator2, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__lexicographical_compare<_Comp_ref>(__first1, __last1, __first2, __last2, __comp);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
lexicographical_compare(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2)
{
return _VSTD::lexicographical_compare(__first1, __last1, __first2, __last2,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
// next_permutation
template <class _Compare, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
_BidirectionalIterator __i = __last;
if (__first == __last || __first == --__i)
return false;
while (true)
{
_BidirectionalIterator __ip1 = __i;
if (__comp(*--__i, *__ip1))
{
_BidirectionalIterator __j = __last;
while (!__comp(*__i, *--__j))
;
swap(*__i, *__j);
_VSTD::reverse(__ip1, __last);
return true;
}
if (__i == __first)
{
_VSTD::reverse(__first, __last);
return false;
}
}
}
template <class _BidirectionalIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__next_permutation<_Comp_ref>(__first, __last, __comp);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
next_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
return _VSTD::next_permutation(__first, __last,
__less<typename iterator_traits<_BidirectionalIterator>::value_type>());
}
// prev_permutation
template <class _Compare, class _BidirectionalIterator>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
_BidirectionalIterator __i = __last;
if (__first == __last || __first == --__i)
return false;
while (true)
{
_BidirectionalIterator __ip1 = __i;
if (__comp(*__ip1, *--__i))
{
_BidirectionalIterator __j = __last;
while (!__comp(*--__j, *__i))
;
swap(*__i, *__j);
_VSTD::reverse(__ip1, __last);
return true;
}
if (__i == __first)
{
_VSTD::reverse(__first, __last);
return false;
}
}
}
template <class _BidirectionalIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__prev_permutation<_Comp_ref>(__first, __last, __comp);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
prev_permutation(_BidirectionalIterator __first, _BidirectionalIterator __last)
{
return _VSTD::prev_permutation(__first, __last,
__less<typename iterator_traits<_BidirectionalIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS _LIBCPP_POP_MACROS
#if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17 #if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17
# include <__pstl_algorithm> # include <__pstl_algorithm>
#endif #endif
#endif // _LIBCPP_ALGORITHM #endif // _LIBCPP_ALGORITHM

libcxx/include/experimental/functional

Show First 20 Lines • Show All 80 Lines • ▼ Show 20 Linesinline namespace fundamentals_v1 {
template<class R, class... ArgTypes, class Alloc> template<class R, class... ArgTypes, class Alloc>
struct uses_allocator<experimental::function<R(ArgTypes...)>, Alloc>; struct uses_allocator<experimental::function<R(ArgTypes...)>, Alloc>;
} // namespace std } // namespace std
*/ */
#include <__functional/search.h>
#include <experimental/__config> #include <experimental/__config>
#include <functional> #include <functional>
#include <algorithm> #include <algorithm>
#include <type_traits> #include <type_traits>
#include <vector> #include <vector>
#include <array> #include <array>
#include <unordered_map> #include <unordered_map>
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libcxx/include/functional

Show First 20 Lines • Show All 484 Lines • ▼ Show 20 LinesPOLICY: For non-variadic implementations, the number of arguments is limited
to 3. It is hoped that the need for non-variadic implementations to 3. It is hoped that the need for non-variadic implementations
will be minimal. will be minimal.
*/ */
#include <__config> #include <__config>
#include <__debug> #include <__debug>
#include <__functional_base> #include <__functional_base>
#include <__functional/search.h>
#include <concepts> #include <concepts>
#include <exception> #include <exception>
#include <memory> #include <memory>
#include <tuple> #include <tuple>
#include <type_traits> #include <type_traits>
#include <typeinfo> #include <typeinfo>
#include <utility> #include <utility>
#include <version> #include <version>
▲ Show 20 Lines • Show All 2,769 Lines • ▼ Show 20 Linesconstexpr auto bind_front(_Fn&& __f, _Args&&... __args)
return __perfect_forward<__bind_front_op, _Fn, _Args...>(_VSTD::forward<_Fn>(__f), return __perfect_forward<__bind_front_op, _Fn, _Args...>(_VSTD::forward<_Fn>(__f),
_VSTD::forward<_Args>(__args)...); _VSTD::forward<_Args>(__args)...);
} }
#endif // _LIBCPP_STD_VER > 17 #endif // _LIBCPP_STD_VER > 17
// struct hash<T*> in <memory> // struct hash<T*> in <memory>
template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2>
pair<_ForwardIterator1, _ForwardIterator1> _LIBCPP_CONSTEXPR_AFTER_CXX11
__search(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred,
forward_iterator_tag, forward_iterator_tag)
{
if (__first2 == __last2)
return _VSTD::make_pair(__first1, __first1); // Everything matches an empty sequence
while (true)
{
// Find first element in sequence 1 that matchs *__first2, with a mininum of loop checks
while (true)
{
if (__first1 == __last1) // return __last1 if no element matches *__first2
return _VSTD::make_pair(__last1, __last1);
if (__pred(*__first1, *__first2))
break;
++__first1;
}
// *__first1 matches *__first2, now match elements after here
_ForwardIterator1 __m1 = __first1;
_ForwardIterator2 __m2 = __first2;
while (true)
{
if (++__m2 == __last2) // If pattern exhausted, __first1 is the answer (works for 1 element pattern)
return _VSTD::make_pair(__first1, __m1);
if (++__m1 == __last1) // Otherwise if source exhaused, pattern not found
return _VSTD::make_pair(__last1, __last1);
if (!__pred(*__m1, *__m2)) // if there is a mismatch, restart with a new __first1
{
++__first1;
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX11
pair<_RandomAccessIterator1, _RandomAccessIterator1>
__search(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
_RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred,
random_access_iterator_tag, random_access_iterator_tag)
{
typedef typename iterator_traits<_RandomAccessIterator1>::difference_type _D1;
typedef typename iterator_traits<_RandomAccessIterator2>::difference_type _D2;
// Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern
const _D2 __len2 = __last2 - __first2;
if (__len2 == 0)
return _VSTD::make_pair(__first1, __first1);
const _D1 __len1 = __last1 - __first1;
if (__len1 < __len2)
return _VSTD::make_pair(__last1, __last1);
const _RandomAccessIterator1 __s = __last1 - (__len2 - 1); // Start of pattern match can't go beyond here
while (true)
{
while (true)
{
if (__first1 == __s)
return _VSTD::make_pair(__last1, __last1);
if (__pred(*__first1, *__first2))
break;
++__first1;
}
_RandomAccessIterator1 __m1 = __first1;
_RandomAccessIterator2 __m2 = __first2;
while (true)
{
if (++__m2 == __last2)
return _VSTD::make_pair(__first1, __first1 + __len2);
++__m1; // no need to check range on __m1 because __s guarantees we have enough source
if (!__pred(*__m1, *__m2))
{
++__first1;
break;
}
}
}
}
#if _LIBCPP_STD_VER > 14 #if _LIBCPP_STD_VER > 14
// default searcher // default searcher
template<class _ForwardIterator, class _BinaryPredicate = equal_to<>> template<class _ForwardIterator, class _BinaryPredicate = equal_to<>>
class _LIBCPP_TEMPLATE_VIS default_searcher { class _LIBCPP_TEMPLATE_VIS default_searcher {
public: public:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
default_searcher(_ForwardIterator __f, _ForwardIterator __l, default_searcher(_ForwardIterator __f, _ForwardIterator __l,
▲ Show 20 Lines • Show All 119 Lines • Show Last 20 Lines

libcxx/include/module.modulemap

Show First 20 Lines • Show All 211 Lines • ▼ Show 20 Lines module cwctype {
export * export *
} }
} }
module algorithm { module algorithm {
header "algorithm" header "algorithm"
export initializer_list export initializer_list
export * export *
module __algorithm {
module adjacent_find { header "__algorithm/adjacent_find.h" }
module all_of { header "__algorithm/all_of.h" }
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You'll need to replicate what I do in D103551 for every algorithm header.

cjdb: You'll need to replicate what I do in D103551 for every algorithm header.
module any_of { header "__algorithm/any_of.h" }
module binary_search { header "__algorithm/binary_search.h" }
module clamp { header "__algorithm/clamp.h" }
module comp { header "__algorithm/comp.h" }
module comp_ref_type { header "__algorithm/comp_ref_type.h" }
module copy { header "__algorithm/copy.h" }
module copy_backward { header "__algorithm/copy_backward.h" }
module copy_if { header "__algorithm/copy_if.h" }
module copy_n { header "__algorithm/copy_n.h" }
module count { header "__algorithm/count.h" }
module count_if { header "__algorithm/count_if.h" }
module equal { header "__algorithm/equal.h" }
module equal_range { header "__algorithm/equal_range.h" }
module fill_n { header "__algorithm/fill_n.h" }
module fill { header "__algorithm/fill.h" }
module find { header "__algorithm/find.h" }
module find_end { header "__algorithm/find_end.h" }
module find_first_of { header "__algorithm/find_first_of.h" }
module find_if { header "__algorithm/find_if.h" }
module find_if_not { header "__algorithm/find_if_not.h" }
module for_each { header "__algorithm/for_each.h" }
module for_each_n { header "__algorithm/for_each_n.h" }
module generate_n { header "__algorithm/generate_n.h" }
module generate { header "__algorithm/generate.h" }
module half_positive { header "__algorithm/half_positive.h" }
module includes { header "__algorithm/includes.h" }
module inplace_merge { header "__algorithm/inplace_merge.h" }
module is_heap { header "__algorithm/is_heap.h" }
module is_heap_until { header "__algorithm/is_heap_until.h" }
module is_partitioned { header "__algorithm/is_partitioned.h" }
module is_permutation { header "__algorithm/is_permutation.h" }
module is_sorted { header "__algorithm/is_sorted.h" }
module is_sorted_until { header "__algorithm/is_sorted_until.h" }
module lexicographical_compare { header "__algorithm/lexicographical_compare.h" }
module lower_bound { header "__algorithm/lower_bound.h" }
module make_heap { header "__algorithm/make_heap.h" }
module max { header "__algorithm/max.h" }
module max_element { header "__algorithm/max_element.h" }
module merge { header "__algorithm/merge.h" }
module min { header "__algorithm/min.h" }
module min_element { header "__algorithm/min_element.h" }
module minmax { header "__algorithm/minmax.h" }
module minmax_element { header "__algorithm/minmax_element.h" }
module mismatch { header "__algorithm/mismatch.h" }
module move { header "__algorithm/move.h" }
module move_backward { header "__algorithm/move_backward.h" }
module next_permutation { header "__algorithm/next_permutation.h" }
module none_of { header "__algorithm/none_of.h" }
module nth_element { header "__algorithm/nth_element.h" }
module partial_sort { header "__algorithm/partial_sort.h" }
module partial_sort_copy { header "__algorithm/partial_sort_copy.h" }
module partition { header "__algorithm/partition.h" }
module partition_copy { header "__algorithm/partition_copy.h" }
module partition_point { header "__algorithm/partition_point.h" }
module pop_heap { header "__algorithm/pop_heap.h" }
module prev_permutation { header "__algorithm/prev_permutation.h" }
module push_heap { header "__algorithm/push_heap.h" }
module remove { header "__algorithm/remove.h" }
module remove_copy { header "__algorithm/remove_copy.h" }
module remove_copy_if { header "__algorithm/remove_copy_if.h" }
module remove_if { header "__algorithm/remove_if.h" }
module replace { header "__algorithm/replace.h" }
module replace_copy { header "__algorithm/replace_copy.h" }
module replace_copy_if { header "__algorithm/replace_copy_if.h" }
module replace_if { header "__algorithm/replace_if.h" }
module reverse_copy { header "__algorithm/reverse_copy.h" }
module reverse { header "__algorithm/reverse.h" }
module rotate_copy { header "__algorithm/rotate_copy.h" }
module rotate { header "__algorithm/rotate.h" }
module sample { header "__algorithm/sample.h" }
module search { header "__algorithm/search.h" }
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Delete

cjdb: Delete
module search_n { header "__algorithm/search_n.h" }
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This export * still needs to go.

cjdb: This `export *` still needs to go.
module set_difference { header "__algorithm/set_difference.h" }
module set_intersection { header "__algorithm/set_intersection.h" }
module set_symmetric_difference { header "__algorithm/set_symmetric_difference.h" }
module set_union { header "__algorithm/set_union.h" }
module shift_left { header "__algorithm/shift_left.h" }
module shift_right { header "__algorithm/shift_right.h" }
module shuffle { header "__algorithm/shuffle.h" }
module sift_down { header "__algorithm/sift_down.h" }
module sort { header "__algorithm/sort.h" }
module sort_heap { header "__algorithm/sort_heap.h" }
module stable_partition { header "__algorithm/stable_partition.h" }
module stable_sort { header "__algorithm/stable_sort.h" }
module transform { header "__algorithm/transform.h" }
module unique_copy { header "__algorithm/unique_copy.h" }
module unique { header "__algorithm/unique.h" }
module unwrap_iter { header "__algorithm/unwrap_iter.h" }
module upper_bound { header "__algorithm/upper_bound.h" }
}
} }
module any { module any {
header "any" header "any"
export * export *
} }
module array { module array {
header "array" header "array"
export initializer_list export initializer_list
▲ Show 20 Lines • Show All 79 Lines • ▼ Show 20 Lines module forward_list {
export * export *
} }
module fstream { module fstream {
header "fstream" header "fstream"
export * export *
} }
module functional { module functional {
header "functional" header "functional"
export * export *
module __functional {
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header "functional"
- umbrella "__functional"
export *
+ module __functional {
+ module __search { header "__search.h" }
+ }
}
module future {
cjdb:
module search { header "__functional/search.h" }
}
} }
module future { module future {
header "future" header "future"
export * export *
} }
module initializer_list { module initializer_list {
header "initializer_list" header "initializer_list"
export * export *
Show All 22 Linesmodule std [system] {
module istream { module istream {
header "istream" header "istream"
// FIXME: should re-export ios, streambuf? // FIXME: should re-export ios, streambuf?
export * export *
} }
module iterator { module iterator {
header "iterator" header "iterator"
export * export *
module __iterator { module __iterator {
module advance { header "__iterator/advance.h" } module advance { header "__iterator/advance.h" }
module concepts { header "__iterator/concepts.h" } module concepts { header "__iterator/concepts.h" }
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Delete.

cjdb: Delete.
module default_sentinel { header "__iterator/default_sentinel.h" } module default_sentinel { header "__iterator/default_sentinel.h" }
module incrementable_traits { header "__iterator/incrementable_traits.h" } module incrementable_traits { header "__iterator/incrementable_traits.h" }
module iter_move { header "__iterator/iter_move.h" } module iter_move { header "__iterator/iter_move.h" }
module iterator_traits { header "__iterator/iterator_traits.h" } module iterator_traits { header "__iterator/iterator_traits.h" }
module next { header "__iterator/next.h" } module next { header "__iterator/next.h" }
module prev { header "__iterator/prev.h" } module prev { header "__iterator/prev.h" }
module projected { header "__iterator/projected.h" } module projected { header "__iterator/projected.h" }
module readable_traits { header "__iterator/readable_traits.h" } module readable_traits { header "__iterator/readable_traits.h" }
▲ Show 20 Lines • Show All 72 Lines • ▼ Show 20 Lines module queue {
header "queue" header "queue"
export initializer_list export initializer_list
export * export *
} }
module random { module random {
header "random" header "random"
export initializer_list export initializer_list
export * export *
module __random {
module uniform_int_distribution { header "__random/uniform_int_distribution.h" }
}
} }
module ranges { module ranges {
header "ranges" header "ranges"
export compare export compare
export initializer_list export initializer_list
export iterator export iterator
export * export *
module __ranges { module __ranges {
module access { header "__ranges/access.h" } module access { header "__ranges/access.h" }
module concepts { header "__ranges/concepts.h" } module concepts { header "__ranges/concepts.h" }
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Delete.

cjdb: Delete.
module data { header "__ranges/data.h" } module data { header "__ranges/data.h" }
module empty { header "__ranges/empty.h" } module empty { header "__ranges/empty.h" }
module empty_view { header "__ranges/empty_view.h" } module empty_view { header "__ranges/empty_view.h" }
module enable_borrowed_range { header "__ranges/enable_borrowed_range.h" } module enable_borrowed_range { header "__ranges/enable_borrowed_range.h" }
module enable_view { header "__ranges/enable_view.h" } module enable_view { header "__ranges/enable_view.h" }
module ref_view { header "__ranges/ref_view.h" } module ref_view { header "__ranges/ref_view.h" }
module size { header "__ranges/size.h" } module size { header "__ranges/size.h" }
module subrange { header "__ranges/subrange.h" } module subrange { header "__ranges/subrange.h" }
▲ Show 20 Lines • Show All 244 Lines • Show Last 20 Lines

libcxx/include/random

Show First 20 Lines • Show All 1,672 Lines • ▼ Show 20 Linesclass piecewise_linear_distribution
operator>>(basic_istream<charT, traits>& is, operator>>(basic_istream<charT, traits>& is,
piecewise_linear_distribution& x); piecewise_linear_distribution& x);
}; };
} // std } // std
*/ */
#include <__config> #include <__config>
#include <__random/uniform_int_distribution.h>
#include <algorithm> #include <algorithm>
#include <cmath> #include <cmath>
#include <concepts> #include <concepts>
#include <cstddef> #include <cstddef>
#include <cstdint> #include <cstdint>
#include <initializer_list> #include <initializer_list>
#include <iosfwd> #include <iosfwd>
#include <limits> #include <limits>
▲ Show 20 Lines • Show All 2,079 Lines • ▼ Show 20 Lines#endif
const _RealType _Rp = static_cast<_RealType>(_URNG::max() - _URNG::min()) + _RealType(1); const _RealType _Rp = static_cast<_RealType>(_URNG::max() - _URNG::min()) + _RealType(1);
_RealType __base = _Rp; _RealType __base = _Rp;
_RealType _Sp = __g() - _URNG::min(); _RealType _Sp = __g() - _URNG::min();
for (size_t __i = 1; __i < __k; ++__i, __base *= _Rp) for (size_t __i = 1; __i < __k; ++__i, __base *= _Rp)
_Sp += (__g() - _URNG::min()) * __base; _Sp += (__g() - _URNG::min()) * __base;
return _Sp / __base; return _Sp / __base;
} }
// uniform_int_distribution
// in <algorithm>
template <class _CharT, class _Traits, class _IT>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os,
const uniform_int_distribution<_IT>& __x)
{
__save_flags<_CharT, _Traits> __lx(__os);
typedef basic_ostream<_CharT, _Traits> _Ostream;
__os.flags(_Ostream::dec | _Ostream::left);
_CharT __sp = __os.widen(' ');
__os.fill(__sp);
return __os << __x.a() << __sp << __x.b();
}
template <class _CharT, class _Traits, class _IT>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is,
uniform_int_distribution<_IT>& __x)
{
typedef uniform_int_distribution<_IT> _Eng;
typedef typename _Eng::result_type result_type;
typedef typename _Eng::param_type param_type;
__save_flags<_CharT, _Traits> __lx(__is);
typedef basic_istream<_CharT, _Traits> _Istream;
__is.flags(_Istream::dec | _Istream::skipws);
result_type __a;
result_type __b;
__is >> __a >> __b;
if (!__is.fail())
__x.param(param_type(__a, __b));
return __is;
}
// uniform_real_distribution // uniform_real_distribution
template<class _RealType = double> template<class _RealType = double>
class _LIBCPP_TEMPLATE_VIS uniform_real_distribution class _LIBCPP_TEMPLATE_VIS uniform_real_distribution
{ {
public: public:
// types // types
typedef _RealType result_type; typedef _RealType result_type;
▲ Show 20 Lines • Show All 3,223 Lines • Show Last 20 Lines

libcxx/include/regex

Show First 20 Lines • Show All 758 Lines • ▼ Show 20 Lines
typedef regex_token_iterator<string::const_iterator> sregex_token_iterator; typedef regex_token_iterator<string::const_iterator> sregex_token_iterator;
typedef regex_token_iterator<wstring::const_iterator> wsregex_token_iterator; typedef regex_token_iterator<wstring::const_iterator> wsregex_token_iterator;
} // std } // std
*/ */
#include <__config> #include <__config>
#include <__debug> #include <__debug>
#include <__functional/search.h>
#include <__locale> #include <__locale>
#include <compare> #include <compare>
#include <deque> #include <deque>
#include <initializer_list> #include <initializer_list>
#include <iterator> #include <iterator>
#include <memory> #include <memory>
#include <stdexcept> #include <stdexcept>
#include <string> #include <string>
▲ Show 20 Lines • Show All 6,003 Lines • Show Last 20 Lines

libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.fail.cpp

Show All 30 Linestemplate <class PopulationIterator, class SampleIterator> void test() {
const unsigned os = 4; const unsigned os = 4;
int oa[os]; int oa[os];
std::minstd_rand g; std::minstd_rand g;
std::sample(PopulationIterator(ia), PopulationIterator(ia + is), std::sample(PopulationIterator(ia), PopulationIterator(ia + is),
SampleIterator(oa), os, g); SampleIterator(oa), os, g);
} }
int main(int, char**) { int main(int, char**) {
// expected-error-re@algorithm:* {{static_assert failed{{( due to requirement '.*')?}} "SampleIterator must meet the requirements of RandomAccessIterator"}} // expected-error-re@*:* {{static_assert failed{{( due to requirement '.*')?}} "SampleIterator must meet the requirements of RandomAccessIterator"}}
// expected-error@algorithm:* 2 {{does not provide a subscript operator}} // expected-error@*:* 2 {{does not provide a subscript operator}}
// expected-error@algorithm:* {{invalid operands}} // expected-error@*:* {{invalid operands}}
test<cpp17_input_iterator<int *>, output_iterator<int *> >(); test<cpp17_input_iterator<int *>, output_iterator<int *> >();
return 0; return 0;
} }

libcxx/test/std/algorithms/alg.sorting/alg.min.max/requires_forward_iterator.fail.cpp

Show All 18 Lines
#include "test_iterators.h" #include "test_iterators.h"
int main(int, char**) { int main(int, char**) {
int arr[] = {1, 2, 3}; int arr[] = {1, 2, 3};
const int *b = std::begin(arr), *e = std::end(arr); const int *b = std::begin(arr), *e = std::end(arr);
typedef cpp17_input_iterator<const int*> Iter; typedef cpp17_input_iterator<const int*> Iter;
{ {
// expected-error@algorithm:* {{"std::min_element requires a ForwardIterator"}} // expected-error@*:* {{"std::min_element requires a ForwardIterator"}}
std::min_element(Iter(b), Iter(e)); std::min_element(Iter(b), Iter(e));
} }
{ {
// expected-error@algorithm:* {{"std::max_element requires a ForwardIterator"}} // expected-error@*:* {{"std::max_element requires a ForwardIterator"}}
std::max_element(Iter(b), Iter(e)); std::max_element(Iter(b), Iter(e));
} }
{ {
// expected-error@algorithm:* {{"std::minmax_element requires a ForwardIterator"}} // expected-error@*:* {{"std::minmax_element requires a ForwardIterator"}}
std::minmax_element(Iter(b), Iter(e)); std::minmax_element(Iter(b), Iter(e));
} }
return 0; return 0;
} }

libcxx/test/std/containers/sequences/array/compare.fail.cpp

Show First 20 Lines • Show All 44 Lines • ▼ Show 20 Lines
template <int Dummy> struct NoCompare {}; template <int Dummy> struct NoCompare {};
int main(int, char**) int main(int, char**)
{ {
{ {
typedef NoCompare<0> T; typedef NoCompare<0> T;
typedef std::array<T, 3> C; typedef std::array<T, 3> C;
C c1 = {{}}; C c1 = {{}};
// expected-error@algorithm:* 2 {{invalid operands to binary expression}} // expected-error@*:* 2 {{invalid operands to binary expression}}
TEST_IGNORE_NODISCARD (c1 == c1); TEST_IGNORE_NODISCARD (c1 == c1);
TEST_IGNORE_NODISCARD (c1 < c1); TEST_IGNORE_NODISCARD (c1 < c1);
} }
{ {
typedef NoCompare<1> T; typedef NoCompare<1> T;
typedef std::array<T, 3> C; typedef std::array<T, 3> C;
C c1 = {{}}; C c1 = {{}};
// expected-error@algorithm:* 2 {{invalid operands to binary expression}} // expected-error@*:* 2 {{invalid operands to binary expression}}
TEST_IGNORE_NODISCARD (c1 != c1); TEST_IGNORE_NODISCARD (c1 != c1);
TEST_IGNORE_NODISCARD (c1 > c1); TEST_IGNORE_NODISCARD (c1 > c1);
} }
{ {
typedef NoCompare<2> T; typedef NoCompare<2> T;
typedef std::array<T, 0> C; typedef std::array<T, 0> C;
C c1 = {{}}; C c1 = {{}};
// expected-error@algorithm:* 2 {{invalid operands to binary expression}} // expected-error@*:* 2 {{invalid operands to binary expression}}
TEST_IGNORE_NODISCARD (c1 == c1); TEST_IGNORE_NODISCARD (c1 == c1);
TEST_IGNORE_NODISCARD (c1 < c1); TEST_IGNORE_NODISCARD (c1 < c1);
} }
return 0; return 0;
} }