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 // UNSUPPORTED: c++03, c++11, c++14
10
11 // <chrono>
12
13 // ceil
14
15 // template <class ToDuration, class Rep, class Period>
16 // constexpr
17 // ToDuration
18 // ceil(const duration<Rep, Period>& d);
19
20 #include <chrono>
21 #include <type_traits>
22 #include <cassert>
23
24 #include "test_macros.h"
25
26 template <class ToDuration, class FromDuration>
27 void
test(const FromDuration & f,const ToDuration & d)28 test(const FromDuration& f, const ToDuration& d)
29 {
30 {
31 typedef decltype(std::chrono::ceil<ToDuration>(f)) R;
32 static_assert((std::is_same<R, ToDuration>::value), "");
33 assert(std::chrono::ceil<ToDuration>(f) == d);
34 }
35 }
36
main(int,char **)37 int main(int, char**)
38 {
39 // 7290000ms is 2 hours, 1 minute, and 30 seconds
40 test(std::chrono::milliseconds( 7290000), std::chrono::hours( 3));
41 test(std::chrono::milliseconds(-7290000), std::chrono::hours(-2));
42 test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 122));
43 test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-121));
44
45 {
46 // 9000000ms is 2 hours and 30 minutes
47 constexpr std::chrono::hours h1 = std::chrono::ceil<std::chrono::hours>(std::chrono::milliseconds(9000000));
48 static_assert(h1.count() == 3, "");
49 constexpr std::chrono::hours h2 = std::chrono::ceil<std::chrono::hours>(std::chrono::milliseconds(-9000000));
50 static_assert(h2.count() == -2, "");
51 }
52
53 return 0;
54 }
55