libcxx/include/__chrono/concepts.h

   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