// -*- C++ -*-

//===----------------------------------------------------------------------===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_CSTDDEF

#define _LIBCPP_CSTDDEF

/*

    cstddef synopsis

Macros:

    offsetof(type,member-designator)

    NULL

namespace std

{

Types:

    ptrdiff_t

    size_t

    max_align_t // C++11

    nullptr_t

    byte // C++17

}  // std

*/

#include <__assert> // all public C++ headers provide the assertion handler

#include <__config>

#include <__type_traits/enable_if.h>

#include <__type_traits/integral_constant.h>

#include <__type_traits/is_integral.h>

#include <version>

#include <stddef.h>

#ifndef _LIBCPP_STDDEF_H

#   error <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header. \

          This usually means that your header search paths are not configured properly. \

          The header search paths should contain the C++ Standard Library headers before \

          any C Standard Library, and you are probably using compiler flags that make that \

          not be the case.

#endif

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

#  pragma GCC system_header

#endif

_LIBCPP_BEGIN_NAMESPACE_STD

using ::nullptr_t;

using ::ptrdiff_t _LIBCPP_USING_IF_EXISTS;

using ::size_t _LIBCPP_USING_IF_EXISTS;

#if !defined(_LIBCPP_CXX03_LANG)

using ::max_align_t _LIBCPP_USING_IF_EXISTS;

#endif

_LIBCPP_END_NAMESPACE_STD

#if _LIBCPP_STD_VER > 14

namespace std  // purposefully not versioned

{

enum class byte : unsigned char {};

_LIBCPP_HIDE_FROM_ABI constexpr byte  operator| (byte  __lhs, byte __rhs) noexcept

{

    return static_cast<byte>(

      static_cast<unsigned char>(

         static_cast<unsigned int>(__lhs) | static_cast<unsigned int>(__rhs)

    ));

}

_LIBCPP_HIDE_FROM_ABI constexpr byte& operator|=(byte& __lhs, byte __rhs) noexcept

{ return __lhs = __lhs | __rhs; }

_LIBCPP_HIDE_FROM_ABI constexpr byte  operator& (byte  __lhs, byte __rhs) noexcept

{

    return static_cast<byte>(

      static_cast<unsigned char>(

         static_cast<unsigned int>(__lhs) & static_cast<unsigned int>(__rhs)

    ));

}

_LIBCPP_HIDE_FROM_ABI constexpr byte& operator&=(byte& __lhs, byte __rhs) noexcept

{ return __lhs = __lhs & __rhs; }

_LIBCPP_HIDE_FROM_ABI constexpr byte  operator^ (byte  __lhs, byte __rhs) noexcept

{

    return static_cast<byte>(

      static_cast<unsigned char>(

         static_cast<unsigned int>(__lhs) ^ static_cast<unsigned int>(__rhs)

    ));

}

_LIBCPP_HIDE_FROM_ABI constexpr byte& operator^=(byte& __lhs, byte __rhs) noexcept

{ return __lhs = __lhs ^ __rhs; }

_LIBCPP_HIDE_FROM_ABI constexpr byte  operator~ (byte __b) noexcept

{

    return static_cast<byte>(

      static_cast<unsigned char>(

        ~static_cast<unsigned int>(__b)

    ));

}

template <class _Tp>

using _EnableByteOverload = __enable_if_t<is_integral<_Tp>::value, byte>;

template <class _Integer>

_LIBCPP_HIDE_FROM_ABI constexpr _EnableByteOverload<_Integer> &

  operator<<=(byte& __lhs, _Integer __shift) noexcept

  { return __lhs = __lhs << __shift; }

template <class _Integer>

_LIBCPP_HIDE_FROM_ABI constexpr _EnableByteOverload<_Integer>

  operator<< (byte  __lhs, _Integer __shift) noexcept

  { return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) << __shift)); }

template <class _Integer>

_LIBCPP_HIDE_FROM_ABI constexpr _EnableByteOverload<_Integer> &

  operator>>=(byte& __lhs, _Integer __shift) noexcept

  { return __lhs = __lhs >> __shift; }

template <class _Integer>

_LIBCPP_HIDE_FROM_ABI constexpr _EnableByteOverload<_Integer>

  operator>> (byte  __lhs, _Integer __shift) noexcept

  { return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) >> __shift)); }

template <class _Integer, class = _EnableByteOverload<_Integer> >

_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr _Integer

  to_integer(byte __b) noexcept { return static_cast<_Integer>(__b); }

} // namespace std

#endif

#endif // _LIBCPP_CSTDDEF