[libc++] [P1612] Add missing feature-test macro __cpp_lib_endian.

[curdeius]

Summary

endian has already been relocated from <type_traits> to <bit> in rL366776.

[ldionne]

Thanks!

libcxx/docs/FeatureTestMacroTable.rst

 .. _feature-status:
 
 Status
 ======
 
 .. table:: Current Status
      :name: feature-status-table
      :widths: auto
-     
     ================================================= =================
     Macro Name                                        Value            
     ================================================= =================
     **C++ 14**                                                         
     -------------------------------------------------------------------
     ``__cpp_lib_chrono_udls``                         ``201304L``      
     ------------------------------------------------- -----------------
     ``__cpp_lib_complex_udls``                        ``201309L``      
.. table:: Current Status
     ``__cpp_lib_concepts``                            *unimplemented*  
     ------------------------------------------------- -----------------
     ``__cpp_lib_constexpr_misc``                      *unimplemented*  
     ------------------------------------------------- -----------------
     ``__cpp_lib_constexpr_swap_algorithms``           *unimplemented*  
     ------------------------------------------------- -----------------
     ``__cpp_lib_destroying_delete``                   ``201806L``      
     ------------------------------------------------- -----------------
+    ``__cpp_lib_endian``                              ``201907L``      
+    ------------------------------------------------- -----------------
     ``__cpp_lib_erase_if``                            ``201811L``      
     ------------------------------------------------- -----------------
     ``__cpp_lib_generic_unordered_lookup``            *unimplemented*  
     ------------------------------------------------- -----------------
     ``__cpp_lib_interpolate``                         ``201902L``      
     ------------------------------------------------- -----------------
     ``__cpp_lib_is_constant_evaluated``               ``201811L``      
     ------------------------------------------------- -----------------
     ``__cpp_lib_list_remove_return_type``             *unimplemented*  
     ------------------------------------------------- -----------------
     ``__cpp_lib_ranges``                              *unimplemented*  
     ------------------------------------------------- -----------------
     ``__cpp_lib_three_way_comparison``                *unimplemented*  
     ================================================= =================
 
 

libcxx/include/version

 __cpp_lib_clamp                                         201603L <algorithm>
 __cpp_lib_complex_udls                                  201309L <complex>
 __cpp_lib_concepts                                      201806L <concepts>
 __cpp_lib_constexpr_misc                                201811L <array> <functional> <iterator>
                                                                 <string_view> <tuple> <utility>
 __cpp_lib_constexpr_swap_algorithms                     201806L <algorithm>
 __cpp_lib_destroying_delete                             201806L <new>
 __cpp_lib_enable_shared_from_this                       201603L <memory>
+__cpp_lib_endian                                        201907L <bit>
 __cpp_lib_erase_if                                      201811L <string> <deque> <forward_list>
                                                                 <list> <vector> <map>
                                                                 <set> <unordered_map> <unordered_set>
 __cpp_lib_exchange_function                             201304L <utility>
 __cpp_lib_execution                                     201603L <execution>
 __cpp_lib_filesystem                                    201703L <filesystem>
 __cpp_lib_gcd_lcm                                       201606L <numeric>
 __cpp_lib_generic_associative_lookup                    201304L <map> <set>

 #   define __cpp_lib_char8_t                            201811L
 # endif
 // # define __cpp_lib_concepts                             201806L
 // # define __cpp_lib_constexpr_misc                       201811L
 // # define __cpp_lib_constexpr_swap_algorithms            201806L
 # if _LIBCPP_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L
 #   define __cpp_lib_destroying_delete                  201806L
 # endif
+# define __cpp_lib_endian                               201907L
 # define __cpp_lib_erase_if                             201811L
 // # define __cpp_lib_generic_unordered_lookup             201811L
 # define __cpp_lib_interpolate                          201902L
 # if !defined(_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED)
 #   define __cpp_lib_is_constant_evaluated              201811L
 # endif
 // # define __cpp_lib_list_remove_return_type              201806L
 // # define __cpp_lib_ranges                               201811L
 // # define __cpp_lib_three_way_comparison                 201711L
 #endif
 
 #endif // _LIBCPP_VERSIONH

libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.pass.cpp

 // and should not be edited manually.
 
 // <bit>
 
 // Test the feature test macros defined by <bit>
 
 /*  Constant              Value
     __cpp_lib_bit_cast    201806L [C++2a]
+    __cpp_lib_endian      201907L [C++2a]
 */
 
 #include <bit>
 #include "test_macros.h"
 
 #if TEST_STD_VER < 14
 
 # ifdef __cpp_lib_bit_cast
 #   error "__cpp_lib_bit_cast should not be defined before c++2a"
 # endif
 
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++2a"
+# endif
+
 #elif TEST_STD_VER == 14
 
 # ifdef __cpp_lib_bit_cast
 #   error "__cpp_lib_bit_cast should not be defined before c++2a"
 # endif
 
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++2a"
+# endif
+
 #elif TEST_STD_VER == 17
 
 # ifdef __cpp_lib_bit_cast
 #   error "__cpp_lib_bit_cast should not be defined before c++2a"
 # endif
 
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++2a"
+# endif
+
 #elif TEST_STD_VER > 17
 
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_bit_cast
 #     error "__cpp_lib_bit_cast should be defined in c++2a"
 #   endif
 #   if __cpp_lib_bit_cast != 201806L
 #     error "__cpp_lib_bit_cast should have the value 201806L in c++2a"
 #   endif
 # else // _LIBCPP_VERSION
 #   ifdef __cpp_lib_bit_cast
 #     error "__cpp_lib_bit_cast should not be defined because it is unimplemented in libc++!"
 #   endif
 # endif
 
+# ifndef __cpp_lib_endian
+#   error "__cpp_lib_endian should be defined in c++2a"
+# endif
+# if __cpp_lib_endian != 201907L
+#   error "__cpp_lib_endian should have the value 201907L in c++2a"
+# endif
+
 #endif // TEST_STD_VER > 17
 
 int main(int, char**) { return 0; }

libcxx/test/std/language.support/support.limits/support.limits.general/version.version.pass.cpp

/*  Constant                                       Value
     __cpp_lib_chrono_udls                          201304L [C++14]
     __cpp_lib_clamp                                201603L [C++17]
     __cpp_lib_complex_udls                         201309L [C++14]
     __cpp_lib_concepts                             201806L [C++2a]
     __cpp_lib_constexpr_misc                       201811L [C++2a]
     __cpp_lib_constexpr_swap_algorithms            201806L [C++2a]
     __cpp_lib_destroying_delete                    201806L [C++2a]
     __cpp_lib_enable_shared_from_this              201603L [C++17]
+    __cpp_lib_endian                               201907L [C++2a]
     __cpp_lib_erase_if                             201811L [C++2a]
     __cpp_lib_exchange_function                    201304L [C++14]
     __cpp_lib_execution                            201603L [C++17]
     __cpp_lib_filesystem                           201703L [C++17]
     __cpp_lib_gcd_lcm                              201606L [C++17]
     __cpp_lib_generic_associative_lookup           201304L [C++14]
     __cpp_lib_generic_unordered_lookup             201811L [C++2a]
     __cpp_lib_hardware_interference_size           201703L [C++17]

 # ifdef __cpp_lib_destroying_delete
 #   error "__cpp_lib_destroying_delete should not be defined before c++2a"
 # endif
 
 # ifdef __cpp_lib_enable_shared_from_this
 #   error "__cpp_lib_enable_shared_from_this should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++2a"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++2a"
 # endif
 
 # ifdef __cpp_lib_exchange_function
 #   error "__cpp_lib_exchange_function should not be defined before c++14"
 # endif
 

 # ifdef __cpp_lib_destroying_delete
 #   error "__cpp_lib_destroying_delete should not be defined before c++2a"
 # endif
 
 # ifdef __cpp_lib_enable_shared_from_this
 #   error "__cpp_lib_enable_shared_from_this should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++2a"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++2a"
 # endif
 
 # ifndef __cpp_lib_exchange_function
 #   error "__cpp_lib_exchange_function should be defined in c++14"
 # endif
 # if __cpp_lib_exchange_function != 201304L

 
 # ifndef __cpp_lib_enable_shared_from_this
 #   error "__cpp_lib_enable_shared_from_this should be defined in c++17"
 # endif
 # if __cpp_lib_enable_shared_from_this != 201603L
 #   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++17"
 # endif
 
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++2a"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++2a"
 # endif
 
 # ifndef __cpp_lib_exchange_function
 #   error "__cpp_lib_exchange_function should be defined in c++17"
 # endif
 # if __cpp_lib_exchange_function != 201304L

 
 # ifndef __cpp_lib_enable_shared_from_this
 #   error "__cpp_lib_enable_shared_from_this should be defined in c++2a"
 # endif
 # if __cpp_lib_enable_shared_from_this != 201603L
 #   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++2a"
 # endif
 
+# ifndef __cpp_lib_endian
+#   error "__cpp_lib_endian should be defined in c++2a"
+# endif
+# if __cpp_lib_endian != 201907L
+#   error "__cpp_lib_endian should have the value 201907L in c++2a"
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++2a"
 # endif
 # if __cpp_lib_erase_if != 201811L
 #   error "__cpp_lib_erase_if should have the value 201811L in c++2a"
 # endif
 
 # ifndef __cpp_lib_exchange_function

libcxx/utils/generate_feature_test_macro_components.py

feature_test_macros = sorted([ add_version_header(x) for x in [
    "internal_depends": "!defined(_LIBCPP_HAS_NO_THREADS)",
    },
   {"name": "__cpp_lib_interpolate",
    "values": {
      "c++2a": int(201902),
    },
    "headers": ["numeric"],
    },
+  {"name": "__cpp_lib_endian",
+   "values": {
+     "c++2a": int(201907),
+   },
+   "headers": ["bit"],
+   },
 ]], key=lambda tc: tc["name"])
 
 def get_std_dialects():
   std_dialects = ['c++14', 'c++17', 'c++2a']
   return list(std_dialects)
 
 def get_first_std(d):
     for s in get_std_dialects():

libcxx/www/cxx2a_status.html

-->
   <tr><td><a href="https://wg21.link/P1361">P1361</a></td><td>LWG</td><td>Integration of chrono with text formatting</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1423">P1423</a></td><td>LWG</td><td>char8_t backward compatibility remediation</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1424">P1424</a></td><td>LWG</td><td>'constexpr' feature macro concerns</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1466">P1466</a></td><td>LWG</td><td>Miscellaneous minor fixes for chrono</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1474">P1474</a></td><td>LWG</td><td>Helpful pointers for ContiguousIterator</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1502">P1502</a></td><td>LWG</td><td>Standard library header units for C++20</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1522">P1522</a></td><td>LWG</td><td>Iterator Difference Type and Integer Overflow</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1523">P1523</a></td><td>LWG</td><td>Views and Size Types</td><td>Cologne</td><td></td><td></td></tr>
-  <tr><td><a href="https://wg21.link/P1612">P1612</a></td><td>LWG</td><td>Relocate Endian’s Specification</td><td>Cologne</td><td></td><td></td></tr>
+  <tr><td><a href="https://wg21.link/P1612">P1612</a></td><td>LWG</td><td>Relocate Endian’s Specification</td><td>Cologne</td><td>Complete</td><td>10.0</td></tr>
   <tr><td><a href="https://wg21.link/P1614">P1614</a></td><td>LWG</td><td>The Mothership has Landed</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1638">P1638</a></td><td>LWG</td><td>basic_istream_view::iterator should not be copyable</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1643">P1643</a></td><td>LWG</td><td>Add wait/notify to atomic_ref</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1644">P1644</a></td><td>LWG</td><td>Add wait/notify to atomic<shared_ptr></td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1650">P1650</a></td><td>LWG</td><td>Output std::chrono::days with 'd' suffix</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1651">P1651</a></td><td>LWG</td><td>bind_front should not unwrap reference_wrapper</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1652">P1652</a></td><td>LWG</td><td>Printf corner cases in std::format</td><td>Cologne</td><td></td><td></td></tr>
   <tr><td><a href="https://wg21.link/P1661">P1661</a></td><td>LWG</td><td>Remove dedicated precalculated hash lookup interface</td><td>Cologne</td><td></td><td></td></tr>