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Work around std::is_integral<__int128> being false for libstdc++

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This commit is contained in:
Peter Dimov
2023-10-19 19:38:14 +03:00
parent ccc8c3df3f
commit bf4a4c6eca
2 changed files with 40 additions and 2 deletions
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5
include/boost/endian/detail/endian_reverse.hpp
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@ -8,6 +8,7 @@
#include <boost/endian/detail/integral_by_size.hpp>
#include <boost/endian/detail/intrinsic.hpp>
#include <boost/endian/detail/is_scoped_enum.hpp>
#include <boost/endian/detail/is_integral.hpp>
#include <boost/endian/detail/static_assert.hpp>
#include <boost/config.hpp>
#include <type_traits>
@ -103,14 +104,14 @@ inline __uint128_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl( __uint128_t x ) B
// is_endian_reversible
template<class T> struct is_endian_reversible: std::integral_constant<bool,
(std::is_integral<T>::value && !std::is_same<T, bool>::value) || is_scoped_enum<T>::value>
(is_integral<T>::value && !std::is_same<T, bool>::value) || is_scoped_enum<T>::value>
{
};
// is_endian_reversible_inplace
template<class T> struct is_endian_reversible_inplace: std::integral_constant<bool,
std::is_integral<T>::value || std::is_enum<T>::value || std::is_same<T, float>::value || std::is_same<T, double>::value>
is_integral<T>::value || std::is_enum<T>::value || std::is_same<T, float>::value || std::is_same<T, double>::value>
{
};

37
include/boost/endian/detail/is_integral.hpp Normal file
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@ -0,0 +1,37 @@
#ifndef BOOST_ENDIAN_DETAIL_IS_INTEGRAL_HPP_INCLUDED
#define BOOST_ENDIAN_DETAIL_IS_INTEGRAL_HPP_INCLUDED
// Copyright 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
#include <type_traits>
namespace boost
{
namespace endian
{
namespace detail
{
template<class T> struct is_integral: std::is_integral<T>
{
};
#if defined(__SIZEOF_INT128__)
template<> struct is_integral<__int128_t>: std::true_type
{
};
template<> struct is_integral<__uint128_t>: std::true_type
{
};
#endif
} // namespace detail
} // namespace endian
} // namespace boost
#endif // BOOST_ENDIAN_DETAIL_IS_INTEGRAL_HPP_INCLUDED