| // -*- C++ -*- forwarding header. |
| |
| // Copyright (C) 1997-2020 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| /** @file cstddef |
| * This is a Standard C++ Library file. You should @c \#include this file |
| * in your programs, rather than any of the @a *.h implementation files. |
| * |
| * This is the C++ version of the Standard C Library header @c stddef.h, |
| * and its contents are (mostly) the same as that header, but are all |
| * contained in the namespace @c std (except for names which are defined |
| * as macros in C). |
| */ |
| |
| // |
| // ISO C++ 14882: 18.1 Types |
| // |
| |
| #ifndef _GLIBCXX_CSTDDEF |
| #define _GLIBCXX_CSTDDEF 1 |
| |
| #pragma GCC system_header |
| |
| #undef __need_wchar_t |
| #undef __need_ptrdiff_t |
| #undef __need_size_t |
| #undef __need_NULL |
| #undef __need_wint_t |
| #include <bits/c++config.h> |
| #include <stddef.h> |
| |
| extern "C++" |
| { |
| #if __cplusplus >= 201103L |
| namespace std |
| { |
| // We handle size_t, ptrdiff_t, and nullptr_t in c++config.h. |
| using ::max_align_t; |
| } |
| #endif // C++11 |
| |
| #if __cplusplus >= 201703L |
| namespace std |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| #define __cpp_lib_byte 201603 |
| |
| /// std::byte |
| enum class byte : unsigned char {}; |
| |
| template<typename _IntegerType> struct __byte_operand { }; |
| template<> struct __byte_operand<bool> { using __type = byte; }; |
| template<> struct __byte_operand<char> { using __type = byte; }; |
| template<> struct __byte_operand<signed char> { using __type = byte; }; |
| template<> struct __byte_operand<unsigned char> { using __type = byte; }; |
| #ifdef _GLIBCXX_USE_WCHAR_T |
| template<> struct __byte_operand<wchar_t> { using __type = byte; }; |
| #endif |
| #ifdef _GLIBCXX_USE_CHAR8_T |
| template<> struct __byte_operand<char8_t> { using __type = byte; }; |
| #endif |
| template<> struct __byte_operand<char16_t> { using __type = byte; }; |
| template<> struct __byte_operand<char32_t> { using __type = byte; }; |
| template<> struct __byte_operand<short> { using __type = byte; }; |
| template<> struct __byte_operand<unsigned short> { using __type = byte; }; |
| template<> struct __byte_operand<int> { using __type = byte; }; |
| template<> struct __byte_operand<unsigned int> { using __type = byte; }; |
| template<> struct __byte_operand<long> { using __type = byte; }; |
| template<> struct __byte_operand<unsigned long> { using __type = byte; }; |
| template<> struct __byte_operand<long long> { using __type = byte; }; |
| template<> struct __byte_operand<unsigned long long> { using __type = byte; }; |
| #if defined(__GLIBCXX_TYPE_INT_N_0) |
| template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_0> |
| { using __type = byte; }; |
| template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_0> |
| { using __type = byte; }; |
| #endif |
| #if defined(__GLIBCXX_TYPE_INT_N_1) |
| template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_1> |
| { using __type = byte; }; |
| template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_1> |
| { using __type = byte; }; |
| #endif |
| #if defined(__GLIBCXX_TYPE_INT_N_2) |
| template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_2> |
| { using __type = byte; }; |
| template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_2> |
| { using __type = byte; }; |
| #endif |
| template<typename _IntegerType> |
| struct __byte_operand<const _IntegerType> |
| : __byte_operand<_IntegerType> { }; |
| template<typename _IntegerType> |
| struct __byte_operand<volatile _IntegerType> |
| : __byte_operand<_IntegerType> { }; |
| template<typename _IntegerType> |
| struct __byte_operand<const volatile _IntegerType> |
| : __byte_operand<_IntegerType> { }; |
| |
| template<typename _IntegerType> |
| using __byte_op_t = typename __byte_operand<_IntegerType>::__type; |
| |
| template<typename _IntegerType> |
| constexpr __byte_op_t<_IntegerType> |
| operator<<(byte __b, _IntegerType __shift) noexcept |
| { return (byte)(unsigned char)((unsigned)__b << __shift); } |
| |
| template<typename _IntegerType> |
| constexpr __byte_op_t<_IntegerType> |
| operator>>(byte __b, _IntegerType __shift) noexcept |
| { return (byte)(unsigned char)((unsigned)__b >> __shift); } |
| |
| constexpr byte |
| operator|(byte __l, byte __r) noexcept |
| { return (byte)(unsigned char)((unsigned)__l | (unsigned)__r); } |
| |
| constexpr byte |
| operator&(byte __l, byte __r) noexcept |
| { return (byte)(unsigned char)((unsigned)__l & (unsigned)__r); } |
| |
| constexpr byte |
| operator^(byte __l, byte __r) noexcept |
| { return (byte)(unsigned char)((unsigned)__l ^ (unsigned)__r); } |
| |
| constexpr byte |
| operator~(byte __b) noexcept |
| { return (byte)(unsigned char)~(unsigned)__b; } |
| |
| template<typename _IntegerType> |
| constexpr __byte_op_t<_IntegerType>& |
| operator<<=(byte& __b, _IntegerType __shift) noexcept |
| { return __b = __b << __shift; } |
| |
| template<typename _IntegerType> |
| constexpr __byte_op_t<_IntegerType>& |
| operator>>=(byte& __b, _IntegerType __shift) noexcept |
| { return __b = __b >> __shift; } |
| |
| constexpr byte& |
| operator|=(byte& __l, byte __r) noexcept |
| { return __l = __l | __r; } |
| |
| constexpr byte& |
| operator&=(byte& __l, byte __r) noexcept |
| { return __l = __l & __r; } |
| |
| constexpr byte& |
| operator^=(byte& __l, byte __r) noexcept |
| { return __l = __l ^ __r; } |
| |
| template<typename _IntegerType> |
| constexpr _IntegerType |
| to_integer(__byte_op_t<_IntegerType> __b) noexcept |
| { return _IntegerType(__b); } |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace std |
| #endif // C++17 |
| } // extern "C++" |
| |
| #endif // _GLIBCXX_CSTDDEF |