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 // duration
12
13 // template <class Rep2, class Period2>
14 // duration(const duration<Rep2, Period2>& d);
15
16 // inexact conversions allowed for floating point reps
17
18 #include <chrono>
19 #include <cassert>
20 #include <ratio>
21
22 #include "test_macros.h"
23
main(int,char **)24 int main(int, char**)
25 {
26 {
27 std::chrono::duration<double, std::micro> us(1);
28 std::chrono::duration<double, std::milli> ms = us;
29 assert(ms.count() == 1./1000);
30 }
31 #if TEST_STD_VER >= 11
32 {
33 constexpr std::chrono::duration<double, std::micro> us(1);
34 constexpr std::chrono::duration<double, std::milli> ms = us;
35 static_assert(ms.count() == 1./1000, "");
36 }
37 #endif
38
39 return 0;
40 }
41