10b57cec5SDimitry Andric// -*- C++ -*- 2349cc55cSDimitry Andric//===----------------------------------------------------------------------===// 30b57cec5SDimitry Andric// 40b57cec5SDimitry Andric// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 50b57cec5SDimitry Andric// See https://llvm.org/LICENSE.txt for license information. 60b57cec5SDimitry Andric// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 70b57cec5SDimitry Andric// 80b57cec5SDimitry Andric//===----------------------------------------------------------------------===// 90b57cec5SDimitry Andric 100b57cec5SDimitry Andric#ifndef _LIBCPP_CSTDDEF 110b57cec5SDimitry Andric#define _LIBCPP_CSTDDEF 120b57cec5SDimitry Andric 130b57cec5SDimitry Andric/* 140b57cec5SDimitry Andric cstddef synopsis 150b57cec5SDimitry Andric 160b57cec5SDimitry AndricMacros: 170b57cec5SDimitry Andric 180b57cec5SDimitry Andric offsetof(type,member-designator) 190b57cec5SDimitry Andric NULL 200b57cec5SDimitry Andric 210b57cec5SDimitry Andricnamespace std 220b57cec5SDimitry Andric{ 230b57cec5SDimitry Andric 240b57cec5SDimitry AndricTypes: 250b57cec5SDimitry Andric 260b57cec5SDimitry Andric ptrdiff_t 270b57cec5SDimitry Andric size_t 285ffd83dbSDimitry Andric max_align_t // C++11 290b57cec5SDimitry Andric nullptr_t 300b57cec5SDimitry Andric byte // C++17 310b57cec5SDimitry Andric 320b57cec5SDimitry Andric} // std 330b57cec5SDimitry Andric 340b57cec5SDimitry Andric*/ 350b57cec5SDimitry Andric 36*81ad6265SDimitry Andric#include <__assert> // all public C++ headers provide the assertion handler 370b57cec5SDimitry Andric#include <__config> 38*81ad6265SDimitry Andric#include <__type_traits/enable_if.h> 39*81ad6265SDimitry Andric#include <__type_traits/integral_constant.h> 40*81ad6265SDimitry Andric#include <__type_traits/is_integral.h> 41*81ad6265SDimitry Andric#include <stddef.h> 420b57cec5SDimitry Andric#include <version> 430b57cec5SDimitry Andric 440b57cec5SDimitry Andric#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 450b57cec5SDimitry Andric# pragma GCC system_header 460b57cec5SDimitry Andric#endif 470b57cec5SDimitry Andric 480b57cec5SDimitry Andric_LIBCPP_BEGIN_NAMESPACE_STD 490b57cec5SDimitry Andric 50*81ad6265SDimitry Andricusing ::nullptr_t; 51fe6060f1SDimitry Andricusing ::ptrdiff_t _LIBCPP_USING_IF_EXISTS; 52fe6060f1SDimitry Andricusing ::size_t _LIBCPP_USING_IF_EXISTS; 530b57cec5SDimitry Andric 545ffd83dbSDimitry Andric#if !defined(_LIBCPP_CXX03_LANG) 55fe6060f1SDimitry Andricusing ::max_align_t _LIBCPP_USING_IF_EXISTS; 565ffd83dbSDimitry Andric#endif 575ffd83dbSDimitry Andric 580b57cec5SDimitry Andric_LIBCPP_END_NAMESPACE_STD 590b57cec5SDimitry Andric 600b57cec5SDimitry Andric#if _LIBCPP_STD_VER > 14 610b57cec5SDimitry Andricnamespace std // purposefully not versioned 620b57cec5SDimitry Andric{ 630b57cec5SDimitry Andricenum class byte : unsigned char {}; 640b57cec5SDimitry Andric 650b57cec5SDimitry Andricconstexpr byte operator| (byte __lhs, byte __rhs) noexcept 660b57cec5SDimitry Andric{ 670b57cec5SDimitry Andric return static_cast<byte>( 680b57cec5SDimitry Andric static_cast<unsigned char>( 690b57cec5SDimitry Andric static_cast<unsigned int>(__lhs) | static_cast<unsigned int>(__rhs) 700b57cec5SDimitry Andric )); 710b57cec5SDimitry Andric} 720b57cec5SDimitry Andric 730b57cec5SDimitry Andricconstexpr byte& operator|=(byte& __lhs, byte __rhs) noexcept 740b57cec5SDimitry Andric{ return __lhs = __lhs | __rhs; } 750b57cec5SDimitry Andric 760b57cec5SDimitry Andricconstexpr byte operator& (byte __lhs, byte __rhs) noexcept 770b57cec5SDimitry Andric{ 780b57cec5SDimitry Andric return static_cast<byte>( 790b57cec5SDimitry Andric static_cast<unsigned char>( 800b57cec5SDimitry Andric static_cast<unsigned int>(__lhs) & static_cast<unsigned int>(__rhs) 810b57cec5SDimitry Andric )); 820b57cec5SDimitry Andric} 830b57cec5SDimitry Andric 840b57cec5SDimitry Andricconstexpr byte& operator&=(byte& __lhs, byte __rhs) noexcept 850b57cec5SDimitry Andric{ return __lhs = __lhs & __rhs; } 860b57cec5SDimitry Andric 870b57cec5SDimitry Andricconstexpr byte operator^ (byte __lhs, byte __rhs) noexcept 880b57cec5SDimitry Andric{ 890b57cec5SDimitry Andric return static_cast<byte>( 900b57cec5SDimitry Andric static_cast<unsigned char>( 910b57cec5SDimitry Andric static_cast<unsigned int>(__lhs) ^ static_cast<unsigned int>(__rhs) 920b57cec5SDimitry Andric )); 930b57cec5SDimitry Andric} 940b57cec5SDimitry Andric 950b57cec5SDimitry Andricconstexpr byte& operator^=(byte& __lhs, byte __rhs) noexcept 960b57cec5SDimitry Andric{ return __lhs = __lhs ^ __rhs; } 970b57cec5SDimitry Andric 980b57cec5SDimitry Andricconstexpr byte operator~ (byte __b) noexcept 990b57cec5SDimitry Andric{ 1000b57cec5SDimitry Andric return static_cast<byte>( 1010b57cec5SDimitry Andric static_cast<unsigned char>( 1020b57cec5SDimitry Andric ~static_cast<unsigned int>(__b) 1030b57cec5SDimitry Andric )); 1040b57cec5SDimitry Andric} 105*81ad6265SDimitry Andric 106*81ad6265SDimitry Andrictemplate <class _Tp> 107*81ad6265SDimitry Andricusing _EnableByteOverload = __enable_if_t<is_integral<_Tp>::value, byte>; 108*81ad6265SDimitry Andric 1095ffd83dbSDimitry Andrictemplate <class _Integer> 1105ffd83dbSDimitry Andric constexpr _EnableByteOverload<_Integer> & 1115ffd83dbSDimitry Andric operator<<=(byte& __lhs, _Integer __shift) noexcept 1125ffd83dbSDimitry Andric { return __lhs = __lhs << __shift; } 1130b57cec5SDimitry Andric 1145ffd83dbSDimitry Andrictemplate <class _Integer> 1155ffd83dbSDimitry Andric constexpr _EnableByteOverload<_Integer> 1165ffd83dbSDimitry Andric operator<< (byte __lhs, _Integer __shift) noexcept 1175ffd83dbSDimitry Andric { return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) << __shift)); } 1185ffd83dbSDimitry Andric 1195ffd83dbSDimitry Andrictemplate <class _Integer> 1205ffd83dbSDimitry Andric constexpr _EnableByteOverload<_Integer> & 1215ffd83dbSDimitry Andric operator>>=(byte& __lhs, _Integer __shift) noexcept 1225ffd83dbSDimitry Andric { return __lhs = __lhs >> __shift; } 1235ffd83dbSDimitry Andric 1245ffd83dbSDimitry Andrictemplate <class _Integer> 1255ffd83dbSDimitry Andric constexpr _EnableByteOverload<_Integer> 1265ffd83dbSDimitry Andric operator>> (byte __lhs, _Integer __shift) noexcept 1275ffd83dbSDimitry Andric { return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) >> __shift)); } 1285ffd83dbSDimitry Andric 1295ffd83dbSDimitry Andrictemplate <class _Integer, class = _EnableByteOverload<_Integer> > 130fe6060f1SDimitry Andric _LIBCPP_NODISCARD_EXT constexpr _Integer 1315ffd83dbSDimitry Andric to_integer(byte __b) noexcept { return static_cast<_Integer>(__b); } 1321fd87a68SDimitry Andric 1331fd87a68SDimitry Andric} // namespace std 1340b57cec5SDimitry Andric 1350b57cec5SDimitry Andric#endif 1360b57cec5SDimitry Andric 1370b57cec5SDimitry Andric#endif // _LIBCPP_CSTDDEF 138