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Relocate std::endian from <type_traits> to <bit>

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This change to an early C++2a feature was just approved (P1612R1).

	* include/std/bit (endian): Move definition here as per P1612R1.
	* include/std/type_traits (endian): Remove definition from here.
	* testsuite/20_util/endian/1.cc: Rename to ...
	* testsuite/26_numerics/endian/1.cc: ... here. Adjust header.

From-SVN: r273816
This commit is contained in:
Jonathan Wakely 2019-07-25 21:30:25 +01:00 committed by Jonathan Wakely
parent 599780d601
commit 45c7215c1e
4 changed files with 15 additions and 9 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
2019-07-25 Jonathan Wakely <jwakely@redhat.com>
* include/std/bit (endian): Move definition here as per P1612R1.
* include/std/type_traits (endian): Remove definition from here.
* testsuite/20_util/endian/1.cc: Rename to ...
* testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
2019-07-25 Martin Liska <mliska@suse.cz>
Dominik Infuhr <dominik.infuehr@theobroma-systems.com>

7
libstdc++-v3/include/std/bit
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@ -315,6 +315,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
log2p1(_Tp __x) noexcept
{ return std::__log2p1(__x); }
/// Byte order
enum class endian
{
little = __ORDER_LITTLE_ENDIAN__,
big = __ORDER_BIG_ENDIAN__,
native = __BYTE_ORDER__
};
#endif // C++2a
_GLIBCXX_END_NAMESPACE_VERSION

8
libstdc++-v3/include/std/type_traits
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@ -3226,14 +3226,6 @@ template <typename _From, typename _To>
#endif // C++17
#if __cplusplus > 201703L
/// Byte order
enum class endian
{
little = __ORDER_LITTLE_ENDIAN__,
big = __ORDER_BIG_ENDIAN__,
native = __BYTE_ORDER__
};
/// Remove references and cv-qualifiers.
template<typename _Tp>
struct remove_cvref

2
libstdc++-v3/testsuite/20_util/endian/1.cc → libstdc++-v3/testsuite/26_numerics/endian/1.cc
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@ -18,7 +18,7 @@
// { dg-options "-std=gnu++2a" }
// { dg-do compile { target c++2a } }
#include <type_traits>
#include <bit>
static_assert( std::is_enum_v<std::endian> );
static_assert( std::endian::little != std::endian::big );