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Add __int128 support to endian_reverse

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This commit is contained in:
Peter Dimov
2019-10-20 21:28:38 +03:00
parent b2faa783ad
commit fbc198e75d
3 changed files with 89 additions and 2 deletions
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include/boost/endian/detail/endian_reverse.hpp
+12 -2
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@@ -62,7 +62,7 @@ inline uint16_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl( uint16_t x ) BOOST_N
#endif
}
inline uint32_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl(uint32_t x) BOOST_NOEXCEPT
inline uint32_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl( uint32_t x ) BOOST_NOEXCEPT
{
#ifdef BOOST_ENDIAN_NO_INTRINSICS
@@ -76,7 +76,7 @@ inline uint32_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl(uint32_t x) BOOST_NOE
#endif
}
inline uint64_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl(uint64_t x) BOOST_NOEXCEPT
inline uint64_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl( uint64_t x ) BOOST_NOEXCEPT
{
#ifdef BOOST_ENDIAN_NO_INTRINSICS
@@ -91,6 +91,16 @@ inline uint64_t BOOST_ENDIAN_CONSTEXPR endian_reverse_impl(uint64_t x) BOOST_NOE
# endif
}
#if defined(BOOST_HAS_INT128)
inline uint128_type BOOST_ENDIAN_CONSTEXPR endian_reverse_impl( uint128_type x ) BOOST_NOEXCEPT
{
return endian_reverse_impl( static_cast<uint64_t>( x >> 64 ) ) |
static_cast<uint128_type>( endian_reverse_impl( static_cast<uint64_t>( x ) ) ) << 64;
}
#endif
} // namespace detail
// Requires:
include/boost/endian/detail/integral_by_size.hpp
+10
View File
@@ -7,6 +7,7 @@
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/cstdint.hpp>
#include <boost/config.hpp>
#include <cstddef>
namespace boost
@@ -40,6 +41,15 @@ template<> struct integral_by_size<8>
typedef uint64_t type;
};
#if defined(BOOST_HAS_INT128)
template<> struct integral_by_size<16>
{
typedef uint128_type type;
};
#endif
} // namespace detail
} // namespace endian
} // namespace boost