1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef _LIBCPP___CHRONO_CONCEPTS_H
11 #define _LIBCPP___CHRONO_CONCEPTS_H
12 
13 #include <__chrono/hh_mm_ss.h>
14 #include <__chrono/time_point.h>
15 #include <__config>
16 #include <__type_traits/is_specialization.h>
17 
18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19 #  pragma GCC system_header
20 #endif
21 
22 _LIBCPP_BEGIN_NAMESPACE_STD
23 
24 #if _LIBCPP_STD_VER >= 20
25 
26 template <class _Tp>
27 concept __is_hh_mm_ss = __is_specialization_v<_Tp, chrono::hh_mm_ss>;
28 
29 template <class _Tp>
30 concept __is_time_point = __is_specialization_v<_Tp, chrono::time_point>;
31 
32 #endif // _LIBCPP_STD_VER >= 20
33 
34 _LIBCPP_END_NAMESPACE_STD
35 
36 #endif // _LIBCPP___CHRONO_CONCEPTS_H
37