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 <__cstddef/size_t.h> 14 #include <__type_traits/integral_constant.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template <class _Tp> 23 struct _LIBCPP_TEMPLATE_VIS _LIBCPP_NO_SPECIALIZATIONS alignment_of 24 : public integral_constant<size_t, _LIBCPP_ALIGNOF(_Tp)> {}; 25 26 #if _LIBCPP_STD_VER >= 17 27 template <class _Tp> 28 _LIBCPP_NO_SPECIALIZATIONS inline constexpr size_t alignment_of_v = _LIBCPP_ALIGNOF(_Tp); 29 #endif 30 31 _LIBCPP_END_NAMESPACE_STD 32 33 #endif // _LIBCPP___TYPE_TRAITS_ALIGNMENT_OF_H 34