diff options
Diffstat (limited to 'contrib/libc++/include/cstddef')
| -rw-r--r-- | contrib/libc++/include/cstddef | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/contrib/libc++/include/cstddef b/contrib/libc++/include/cstddef index edd106c..6258449 100644 --- a/contrib/libc++/include/cstddef +++ b/contrib/libc++/include/cstddef @@ -28,6 +28,7 @@ Types: size_t max_align_t nullptr_t + byte // C++17 } // std @@ -48,7 +49,8 @@ _LIBCPP_BEGIN_NAMESPACE_STD using ::ptrdiff_t; using ::size_t; -#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T) +#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T) || \ + defined(__DEFINED_max_align_t) // Re-use the compiler's <stddef.h> max_align_t where possible. using ::max_align_t; #else @@ -57,4 +59,32 @@ typedef long double max_align_t; _LIBCPP_END_NAMESPACE_STD +#if _LIBCPP_STD_VER > 14 +namespace std // purposefully not versioned +{ +enum class byte : unsigned char {}; + +constexpr byte& operator|=(byte& __lhs, byte __rhs) noexcept +{ return __lhs = byte(static_cast<unsigned char>(__lhs) | static_cast<unsigned char>(__rhs)); } +constexpr byte operator| (byte __lhs, byte __rhs) noexcept +{ return byte(static_cast<unsigned char>(__lhs) | static_cast<unsigned char>(__rhs)); } + +constexpr byte& operator&=(byte& __lhs, byte __rhs) noexcept +{ return __lhs = byte(static_cast<unsigned char>(__lhs) & static_cast<unsigned char>(__rhs)); } +constexpr byte operator& (byte __lhs, byte __rhs) noexcept +{ return byte(static_cast<unsigned char>(__lhs) & static_cast<unsigned char>(__rhs)); } + +constexpr byte& operator^=(byte& __lhs, byte __rhs) noexcept +{ return __lhs = byte(static_cast<unsigned char>(__lhs) ^ static_cast<unsigned char>(__rhs)); } +constexpr byte operator^ (byte __lhs, byte __rhs) noexcept +{ return byte(static_cast<unsigned char>(__lhs) ^ static_cast<unsigned char>(__rhs)); } + +constexpr byte operator~ (byte __b) noexcept +{ return byte(~static_cast<unsigned char>(__b)); } + +} + +#include <type_traits> // rest of byte +#endif + #endif // _LIBCPP_CSTDDEF |
