v1/__chrono/concepts.h

0001 // -*- C++ -*-
0002 //===----------------------------------------------------------------------===//
0003 //
0004 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0005 // See https://llvm.org/LICENSE.txt for license information.
0006 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0007 //
0008 //===----------------------------------------------------------------------===//
0009
0010 #ifndef _LIBCPP___CHRONO_CONCEPTS_H
0011 #define _LIBCPP___CHRONO_CONCEPTS_H
0012
0013 #include <__chrono/hh_mm_ss.h>
0014 #include <__chrono/time_point.h>
0015 #include <__config>
0016 #include <__type_traits/is_specialization.h>
0017
0018 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0019 #  pragma GCC system_header
0020 #endif
0021
0022 _LIBCPP_BEGIN_NAMESPACE_STD
0023
0024 #if _LIBCPP_STD_VER >= 20
0025
0026 template <class _Tp>
0027 concept __is_hh_mm_ss = __is_specialization_v<_Tp, chrono::hh_mm_ss>;
0028
0029 template <class _Tp>
0030 concept __is_time_point = __is_specialization_v<_Tp, chrono::time_point>;
0031
0032 #endif // _LIBCPP_STD_VER >= 20
0033
0034 _LIBCPP_END_NAMESPACE_STD
0035
0036 #endif // _LIBCPP___CHRONO_CONCEPTS_H