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
26template <class _Tp>
27concept __is_hh_mm_ss = __is_specialization_v<_Tp, chrono::hh_mm_ss>;
28
29template <class _Tp>
30concept __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