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___CONCEPTS_DIFFERENT_FROM_H |
10 | #define _LIBCPP___CONCEPTS_DIFFERENT_FROM_H |
11 | |
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_header |
18 | #endif |
19 | |
20 | _LIBCPP_BEGIN_NAMESPACE_STD |
21 | |
22 | #if _LIBCPP_STD_VER >= 20 |
23 | |
24 | template <class _Tp, class _Up> |
25 | concept __different_from = !same_as<remove_cvref_t<_Tp>, remove_cvref_t<_Up>>; |
26 | |
27 | #endif // _LIBCPP_STD_VER >= 20 |
28 | |
29 | _LIBCPP_END_NAMESPACE_STD |
30 | |
31 | #endif // _LIBCPP___CONCEPTS_DIFFERENT_FROM_H |
32 | |