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
26template <class ToDuration, class FromDuration>
27void
28test(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
37int main(int, char**)
38{
39// 7290000ms is 2 hours, 1 minute, and 30 seconds
40 test(f: std::chrono::milliseconds( 7290000), d: std::chrono::hours( 3));
41 test(f: std::chrono::milliseconds(-7290000), d: std::chrono::hours(-2));
42 test(f: std::chrono::milliseconds( 7290000), d: std::chrono::minutes( 122));
43 test(f: std::chrono::milliseconds(-7290000), d: 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>(d: std::chrono::milliseconds(9000000));
48 static_assert(h1.count() == 3, "");
49 constexpr std::chrono::hours h2 = std::chrono::ceil<std::chrono::hours>(d: std::chrono::milliseconds(-9000000));
50 static_assert(h2.count() == -2, "");
51 }
52
53 return 0;
54}
55

source code of libcxx/test/std/time/time.duration/time.duration.cast/ceil.pass.cpp