1//===----------------------------------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef _LIBCPP___TYPE_TRAITS_ALIGNMENT_OF_H 10#define _LIBCPP___TYPE_TRAITS_ALIGNMENT_OF_H 11 12#include <__config> 13#include <__type_traits/integral_constant.h> 14#include <cstddef> 15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17# pragma GCC system_header 18#endif 19 20_LIBCPP_BEGIN_NAMESPACE_STD 21 22template <class _Tp> 23struct _LIBCPP_TEMPLATE_VIS alignment_of : public integral_constant<size_t, _LIBCPP_ALIGNOF(_Tp)> {}; 24 25#if _LIBCPP_STD_VER >= 17 26template <class _Tp> 27inline constexpr size_t alignment_of_v = _LIBCPP_ALIGNOF(_Tp); 28#endif 29 30_LIBCPP_END_NAMESPACE_STD 31 32#endif // _LIBCPP___TYPE_TRAITS_ALIGNMENT_OF_H 33