32 lines · c
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_DIFFERENT_FROM_H10#define _LIBCPP___CONCEPTS_DIFFERENT_FROM_H11 12#include <__concepts/same_as.h>13#include <__config>14#include <__type_traits/remove_cvref.h>15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)17# pragma GCC system_header18#endif19 20_LIBCPP_BEGIN_NAMESPACE_STD21 22#if _LIBCPP_STD_VER >= 2023 24template <class _Tp, class _Up>25concept __different_from = !same_as<remove_cvref_t<_Tp>, remove_cvref_t<_Up>>;26 27#endif // _LIBCPP_STD_VER >= 2028 29_LIBCPP_END_NAMESPACE_STD30 31#endif // _LIBCPP___CONCEPTS_DIFFERENT_FROM_H32