17a984708SDavid Chisnall// -*- C++ -*- 27a984708SDavid Chisnall//===--------------------------- cstddef ----------------------------------===// 37a984708SDavid Chisnall// 47a984708SDavid Chisnall// The LLVM Compiler Infrastructure 57a984708SDavid Chisnall// 67a984708SDavid Chisnall// This file is dual licensed under the MIT and the University of Illinois Open 77a984708SDavid Chisnall// Source Licenses. See LICENSE.TXT for details. 87a984708SDavid Chisnall// 97a984708SDavid Chisnall//===----------------------------------------------------------------------===// 107a984708SDavid Chisnall 117a984708SDavid Chisnall#ifndef _LIBCPP_CSTDDEF 127a984708SDavid Chisnall#define _LIBCPP_CSTDDEF 137a984708SDavid Chisnall 147a984708SDavid Chisnall/* 157a984708SDavid Chisnall cstddef synopsis 167a984708SDavid Chisnall 177a984708SDavid ChisnallMacros: 187a984708SDavid Chisnall 197a984708SDavid Chisnall offsetof(type,member-designator) 207a984708SDavid Chisnall NULL 217a984708SDavid Chisnall 227a984708SDavid Chisnallnamespace std 237a984708SDavid Chisnall{ 247a984708SDavid Chisnall 257a984708SDavid ChisnallTypes: 267a984708SDavid Chisnall 277a984708SDavid Chisnall ptrdiff_t 287a984708SDavid Chisnall size_t 297a984708SDavid Chisnall max_align_t 307a984708SDavid Chisnall nullptr_t 31540d2a8bSDimitry Andric byte // C++17 327a984708SDavid Chisnall 337a984708SDavid Chisnall} // std 347a984708SDavid Chisnall 357a984708SDavid Chisnall*/ 367a984708SDavid Chisnall 377a984708SDavid Chisnall#include <__config> 38*b5893f02SDimitry Andric#include <version> 397a984708SDavid Chisnall 407a984708SDavid Chisnall#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 417a984708SDavid Chisnall#pragma GCC system_header 427a984708SDavid Chisnall#endif 437a984708SDavid Chisnall 449729cf09SDimitry Andric// Don't include our own <stddef.h>; we don't want to declare ::nullptr_t. 459729cf09SDimitry Andric#include_next <stddef.h> 469729cf09SDimitry Andric#include <__nullptr> 479729cf09SDimitry Andric 487a984708SDavid Chisnall_LIBCPP_BEGIN_NAMESPACE_STD 497a984708SDavid Chisnall 507a984708SDavid Chisnallusing ::ptrdiff_t; 517a984708SDavid Chisnallusing ::size_t; 527a984708SDavid Chisnall 53540d2a8bSDimitry Andric#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T) || \ 54*b5893f02SDimitry Andric defined(__DEFINED_max_align_t) || defined(__NetBSD__) 55d72607e9SDimitry Andric// Re-use the compiler's <stddef.h> max_align_t where possible. 56d72607e9SDimitry Andricusing ::max_align_t; 57d72607e9SDimitry Andric#else 587a984708SDavid Chisnalltypedef long double max_align_t; 59d72607e9SDimitry Andric#endif 607a984708SDavid Chisnall 617a984708SDavid Chisnall_LIBCPP_END_NAMESPACE_STD 627a984708SDavid Chisnall 63540d2a8bSDimitry Andric#if _LIBCPP_STD_VER > 14 64540d2a8bSDimitry Andricnamespace std // purposefully not versioned 65540d2a8bSDimitry Andric{ 66540d2a8bSDimitry Andricenum class byte : unsigned char {}; 67540d2a8bSDimitry Andric 68540d2a8bSDimitry Andricconstexpr byte operator| (byte __lhs, byte __rhs) noexcept 69b2c7081bSDimitry Andric{ 70b2c7081bSDimitry Andric return static_cast<byte>( 71b2c7081bSDimitry Andric static_cast<unsigned char>( 72b2c7081bSDimitry Andric static_cast<unsigned int>(__lhs) | static_cast<unsigned int>(__rhs) 73b2c7081bSDimitry Andric )); 74b2c7081bSDimitry Andric} 75b2c7081bSDimitry Andric 76b2c7081bSDimitry Andricconstexpr byte& operator|=(byte& __lhs, byte __rhs) noexcept 77b2c7081bSDimitry Andric{ return __lhs = __lhs | __rhs; } 78b2c7081bSDimitry Andric 79b2c7081bSDimitry Andricconstexpr byte operator& (byte __lhs, byte __rhs) noexcept 80b2c7081bSDimitry Andric{ 81b2c7081bSDimitry Andric return static_cast<byte>( 82b2c7081bSDimitry Andric static_cast<unsigned char>( 83b2c7081bSDimitry Andric static_cast<unsigned int>(__lhs) & static_cast<unsigned int>(__rhs) 84b2c7081bSDimitry Andric )); 85b2c7081bSDimitry Andric} 86540d2a8bSDimitry Andric 87540d2a8bSDimitry Andricconstexpr byte& operator&=(byte& __lhs, byte __rhs) noexcept 88b2c7081bSDimitry Andric{ return __lhs = __lhs & __rhs; } 89b2c7081bSDimitry Andric 90b2c7081bSDimitry Andricconstexpr byte operator^ (byte __lhs, byte __rhs) noexcept 91b2c7081bSDimitry Andric{ 92b2c7081bSDimitry Andric return static_cast<byte>( 93b2c7081bSDimitry Andric static_cast<unsigned char>( 94b2c7081bSDimitry Andric static_cast<unsigned int>(__lhs) ^ static_cast<unsigned int>(__rhs) 95b2c7081bSDimitry Andric )); 96b2c7081bSDimitry Andric} 97540d2a8bSDimitry Andric 98540d2a8bSDimitry Andricconstexpr byte& operator^=(byte& __lhs, byte __rhs) noexcept 99b2c7081bSDimitry Andric{ return __lhs = __lhs ^ __rhs; } 100540d2a8bSDimitry Andric 101540d2a8bSDimitry Andricconstexpr byte operator~ (byte __b) noexcept 102b2c7081bSDimitry Andric{ 103b2c7081bSDimitry Andric return static_cast<byte>( 104b2c7081bSDimitry Andric static_cast<unsigned char>( 105b2c7081bSDimitry Andric ~static_cast<unsigned int>(__b) 106b2c7081bSDimitry Andric )); 107b2c7081bSDimitry Andric} 108540d2a8bSDimitry Andric 109540d2a8bSDimitry Andric} 110540d2a8bSDimitry Andric 111540d2a8bSDimitry Andric#include <type_traits> // rest of byte 112540d2a8bSDimitry Andric#endif 113540d2a8bSDimitry Andric 1147a984708SDavid Chisnall#endif // _LIBCPP_CSTDDEF 115