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