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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___CONCEPTS_SAME_AS_H10#define _LIBCPP___CONCEPTS_SAME_AS_H11 12#include <__config>13#include <__type_traits/is_same.h>14 15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)16# pragma GCC system_header17#endif18 19_LIBCPP_BEGIN_NAMESPACE_STD20 21#if _LIBCPP_STD_VER >= 2022 23// [concept.same]24 25template <class _Tp, class _Up>26concept __same_as_impl = _IsSame<_Tp, _Up>::value;27 28template <class _Tp, class _Up>29concept same_as = __same_as_impl<_Tp, _Up> && __same_as_impl<_Up, _Tp>;30 31#endif // _LIBCPP_STD_VER >= 2032 33_LIBCPP_END_NAMESPACE_STD34 35#endif // _LIBCPP___CONCEPTS_SAME_AS_H36