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// -*- C++ -*- forwarding header. |
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// Copyright (C) 1997-2021 Free Software Foundation, Inc. |
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// |
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// This file is part of the GNU ISO C++ Library. This library is free |
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// software; you can redistribute it and/or modify it under the |
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// terms of the GNU General Public License as published by the |
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// Free Software Foundation; either version 3, or (at your option) |
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// any later version. |
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|
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// This library is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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|
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// Under Section 7 of GPL version 3, you are granted additional |
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// permissions described in the GCC Runtime Library Exception, version |
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// 3.1, as published by the Free Software Foundation. |
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// You should have received a copy of the GNU General Public License and |
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// a copy of the GCC Runtime Library Exception along with this program; |
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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// <http://www.gnu.org/licenses/>. |
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|
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/** @file cstddef |
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* This is a Standard C++ Library file. You should @c \#include this file |
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* in your programs, rather than any of the @a *.h implementation files. |
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* |
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* This is the C++ version of the Standard C Library header @c stddef.h, |
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* and its contents are (mostly) the same as that header, but are all |
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* contained in the namespace @c std (except for names which are defined |
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* as macros in C). |
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*/ |
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// |
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// ISO C++ 14882: 18.1 Types |
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// |
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#ifndef _GLIBCXX_CSTDDEF |
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#define _GLIBCXX_CSTDDEF 1 |
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#pragma GCC system_header |
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|
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#undef __need_wchar_t |
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#undef __need_ptrdiff_t |
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#undef __need_size_t |
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#undef __need_NULL |
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#undef __need_wint_t |
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#include <bits/c++config.h> |
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#include <stddef.h> |
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|
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extern "C++" |
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{ |
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#if __cplusplus >= 201103L |
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namespace std |
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{ |
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// We handle size_t, ptrdiff_t, and nullptr_t in c++config.h. |
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using ::max_align_t; |
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} |
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#endif // C++11 |
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|
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#if __cplusplus >= 201703L |
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namespace std |
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{ |
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_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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#define __cpp_lib_byte 201603 |
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|
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/// std::byte |
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enum class byte : unsigned char {}; |
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|
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template<typename _IntegerType> struct __byte_operand { }; |
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template<> struct __byte_operand<bool> { using __type = byte; }; |
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template<> struct __byte_operand<char> { using __type = byte; }; |
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template<> struct __byte_operand<signed char> { using __type = byte; }; |
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template<> struct __byte_operand<unsigned char> { using __type = byte; }; |
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#ifdef _GLIBCXX_USE_WCHAR_T |
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template<> struct __byte_operand<wchar_t> { using __type = byte; }; |
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#endif |
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#ifdef _GLIBCXX_USE_CHAR8_T |
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template<> struct __byte_operand<char8_t> { using __type = byte; }; |
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#endif |
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template<> struct __byte_operand<char16_t> { using __type = byte; }; |
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template<> struct __byte_operand<char32_t> { using __type = byte; }; |
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template<> struct __byte_operand<short> { using __type = byte; }; |
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template<> struct __byte_operand<unsigned short> { using __type = byte; }; |
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template<> struct __byte_operand<int> { using __type = byte; }; |
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template<> struct __byte_operand<unsigned int> { using __type = byte; }; |
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template<> struct __byte_operand<long> { using __type = byte; }; |
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template<> struct __byte_operand<unsigned long> { using __type = byte; }; |
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template<> struct __byte_operand<long long> { using __type = byte; }; |
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template<> struct __byte_operand<unsigned long long> { using __type = byte; }; |
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#if defined(__GLIBCXX_TYPE_INT_N_0) |
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template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_0> |
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{ using __type = byte; }; |
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template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_0> |
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{ using __type = byte; }; |
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#endif |
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#if defined(__GLIBCXX_TYPE_INT_N_1) |
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template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_1> |
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{ using __type = byte; }; |
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template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_1> |
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{ using __type = byte; }; |
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#endif |
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#if defined(__GLIBCXX_TYPE_INT_N_2) |
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template<> struct __byte_operand<__GLIBCXX_TYPE_INT_N_2> |
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{ using __type = byte; }; |
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template<> struct __byte_operand<unsigned __GLIBCXX_TYPE_INT_N_2> |
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{ using __type = byte; }; |
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#endif |
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template<typename _IntegerType> |
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struct __byte_operand<const _IntegerType> |
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: __byte_operand<_IntegerType> { }; |
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template<typename _IntegerType> |
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struct __byte_operand<volatile _IntegerType> |
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: __byte_operand<_IntegerType> { }; |
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template<typename _IntegerType> |
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struct __byte_operand<const volatile _IntegerType> |
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: __byte_operand<_IntegerType> { }; |
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|
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template<typename _IntegerType> |
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using __byte_op_t = typename __byte_operand<_IntegerType>::__type; |
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|
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template<typename _IntegerType> |
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constexpr __byte_op_t<_IntegerType> |
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operator<<(byte __b, _IntegerType __shift) noexcept |
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{ return (byte)(unsigned char)((unsigned)__b << __shift); } |
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|
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template<typename _IntegerType> |
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constexpr __byte_op_t<_IntegerType> |
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operator>>(byte __b, _IntegerType __shift) noexcept |
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{ return (byte)(unsigned char)((unsigned)__b >> __shift); } |
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|
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constexpr byte |
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operator|(byte __l, byte __r) noexcept |
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{ return (byte)(unsigned char)((unsigned)__l | (unsigned)__r); } |
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constexpr byte |
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operator&(byte __l, byte __r) noexcept |
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{ return (byte)(unsigned char)((unsigned)__l & (unsigned)__r); } |
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constexpr byte |
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operator^(byte __l, byte __r) noexcept |
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{ return (byte)(unsigned char)((unsigned)__l ^ (unsigned)__r); } |
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constexpr byte |
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operator~(byte __b) noexcept |
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{ return (byte)(unsigned char)~(unsigned)__b; } |
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template<typename _IntegerType> |
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constexpr __byte_op_t<_IntegerType>& |
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operator<<=(byte& __b, _IntegerType __shift) noexcept |
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{ return __b = __b << __shift; } |
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template<typename _IntegerType> |
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constexpr __byte_op_t<_IntegerType>& |
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operator>>=(byte& __b, _IntegerType __shift) noexcept |
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{ return __b = __b >> __shift; } |
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constexpr byte& |
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operator|=(byte& __l, byte __r) noexcept |
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{ return __l = __l | __r; } |
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constexpr byte& |
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operator&=(byte& __l, byte __r) noexcept |
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{ return __l = __l & __r; } |
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constexpr byte& |
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operator^=(byte& __l, byte __r) noexcept |
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{ return __l = __l ^ __r; } |
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template<typename _IntegerType> |
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[[nodiscard]] |
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constexpr _IntegerType |
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to_integer(__byte_op_t<_IntegerType> __b) noexcept |
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{ return _IntegerType(__b); } |
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|
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_GLIBCXX_END_NAMESPACE_VERSION |
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} // namespace std |
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#endif // C++17 |
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} // extern "C++" |
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#endif // _GLIBCXX_CSTDDEF |
