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