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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___CXX03___CHRONO_SYSTEM_CLOCK_H
11#define _LIBCPP___CXX03___CHRONO_SYSTEM_CLOCK_H
12
13#include <__cxx03/__chrono/duration.h>
14#include <__cxx03/__chrono/time_point.h>
15#include <__cxx03/__config>
16#include <__cxx03/ctime>
17
18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19# pragma GCC system_header
20#endif
21
22_LIBCPP_BEGIN_NAMESPACE_STD
23
24namespace chrono {
25
26class _LIBCPP_EXPORTED_FROM_ABI system_clock {
27public:
28 typedef microseconds duration;
29 typedef duration::rep rep;
30 typedef duration::period period;
31 typedef chrono::time_point<system_clock> time_point;
32 static const bool is_steady = false;
33
34 static time_point now() _NOEXCEPT;
35 static time_t to_time_t(const time_point& __t) _NOEXCEPT;
36 static time_point from_time_t(time_t __t) _NOEXCEPT;
37};
38
39} // namespace chrono
40
41_LIBCPP_END_NAMESPACE_STD
42
43#endif // _LIBCPP___CXX03___CHRONO_SYSTEM_CLOCK_H
44

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source code of libcxx/include/__cxx03/__chrono/system_clock.h