// -*- C++ -*-
//===--------------------------- cstddef ----------------------------------===//
//
// 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 _LIBCUDACXX_CSTDDEF
#define _LIBCUDACXX_CSTDDEF

/*
    cstddef synopsis

Macros:

    offsetof(type,member-designator)
    NULL

namespace std
{

Types:

    ptrdiff_t
    size_t
    max_align_t
    nullptr_t
    byte // C++17

}  // std

*/

#include <cuda/std/detail/__config>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header

#include <cuda/std/__cuda/cstddef_prelude.h>
#include <cuda/std/__type_traits/enable_if.h>
#include <cuda/std/__type_traits/is_integral.h>
#include <cuda/std/detail/libcxx/include/__assert> // all public C++ headers provide the assertion handler
#include <cuda/std/version>

_CCCL_PUSH_MACROS

_LIBCUDACXX_BEGIN_NAMESPACE_STD

using ::ptrdiff_t;
using ::size_t;

#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T) || defined(__DEFINED_max_align_t) \
  || defined(__NetBS)
// Re-use the compiler's <stddef.h> max_align_t where possible.
using ::max_align_t;
#else
typedef long double max_align_t;
#endif

_LIBCUDACXX_END_NAMESPACE_STD

#if _CCCL_STD_VER > 2011
#  ifdef _LIBCUDACXX_BEGIN_NAMESPACE_STD_NOVERSION
_LIBCUDACXX_BEGIN_NAMESPACE_STD_NOVERSION
#  else
namespace std // purposefully not versioned
{
#  endif //_LIBCUDACXX_BEGIN_NAMESPACE_STD_NOVERSION
enum class byte : unsigned char
{
};

_LIBCUDACXX_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)));
}

_LIBCUDACXX_HIDE_FROM_ABI constexpr byte& operator|=(byte& __lhs, byte __rhs) noexcept
{
  return __lhs = __lhs | __rhs;
}

_LIBCUDACXX_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)));
}

_LIBCUDACXX_HIDE_FROM_ABI constexpr byte& operator&=(byte& __lhs, byte __rhs) noexcept
{
  return __lhs = __lhs & __rhs;
}

_LIBCUDACXX_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)));
}

_LIBCUDACXX_HIDE_FROM_ABI constexpr byte& operator^=(byte& __lhs, byte __rhs) noexcept
{
  return __lhs = __lhs ^ __rhs;
}

_LIBCUDACXX_HIDE_FROM_ABI constexpr byte operator~(byte __b) noexcept
{
  return static_cast<byte>(static_cast<unsigned char>(~static_cast<unsigned int>(__b)));
}

template <class _Integer>
_LIBCUDACXX_HIDE_FROM_ABI constexpr __enable_if_t<is_integral_v<_Integer>, byte>&
operator<<=(byte& __lhs, _Integer __shift) noexcept
{
  return __lhs = __lhs << __shift;
}

template <class _Integer>
_LIBCUDACXX_HIDE_FROM_ABI constexpr __enable_if_t<is_integral_v<_Integer>, byte>
operator<<(byte __lhs, _Integer __shift) noexcept
{
  return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) << __shift));
}

template <class _Integer>
_LIBCUDACXX_HIDE_FROM_ABI constexpr __enable_if_t<is_integral_v<_Integer>, byte>&
operator>>=(byte& __lhs, _Integer __shift) noexcept
{
  return __lhs = __lhs >> __shift;
}

template <class _Integer>
_LIBCUDACXX_HIDE_FROM_ABI constexpr __enable_if_t<is_integral_v<_Integer>, byte>
operator>>(byte __lhs, _Integer __shift) noexcept
{
  return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) >> __shift));
}

template <class _Integer>
_LIBCUDACXX_HIDE_FROM_ABI constexpr __enable_if_t<is_integral_v<_Integer>, _Integer> to_integer(byte __b) noexcept
{
  return static_cast<_Integer>(__b);
}

#  ifdef _LIBCUDACXX_END_NAMESPACE_STD_NOVERSION
_LIBCUDACXX_END_NAMESPACE_STD_NOVERSION
#  else
}
#  endif //_LIBCUDACXX_END_NAMESPACE_STD_NOVERSION
#endif // _CCCL_STD_VER > 2011

_CCCL_POP_MACROS

#endif // _LIBCUDACXX_CSTDDEF
