1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <chrono>
10 
11 // time_point
12 
13 // template <class Duration2>
14 //   time_point(const time_point<clock, Duration2>& t);
15 
16 #include <chrono>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
main(int,char **)21 int main(int, char**)
22 {
23     typedef std::chrono::system_clock Clock;
24     typedef std::chrono::microseconds Duration1;
25     typedef std::chrono::milliseconds Duration2;
26     {
27     std::chrono::time_point<Clock, Duration2> t2(Duration2(3));
28     std::chrono::time_point<Clock, Duration1> t1 = t2;
29     assert(t1.time_since_epoch() == Duration1(3000));
30     }
31 #if TEST_STD_VER > 11
32     {
33     constexpr std::chrono::time_point<Clock, Duration2> t2(Duration2(3));
34     constexpr std::chrono::time_point<Clock, Duration1> t1 = t2;
35     static_assert(t1.time_since_epoch() == Duration1(3000), "");
36     }
37 #endif
38 
39   return 0;
40 }
41