1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// UNSUPPORTED: c++98, c++03, c++11, c++14
11// <chrono>
12
13// ceil
14
15// template <class ToDuration, class Clock, class Duration>
16//   time_point<Clock, ToDuration>
17//   ceil(const time_point<Clock, Duration>& t);
18
19#include <chrono>
20#include <type_traits>
21#include <cassert>
22
23template <class FromDuration, class ToDuration>
24void
25test(const FromDuration& df, const ToDuration& d)
26{
27    typedef std::chrono::system_clock Clock;
28    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
29    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
30    {
31    FromTimePoint f(df);
32    ToTimePoint t(d);
33    typedef decltype(std::chrono::ceil<ToDuration>(f)) R;
34    static_assert((std::is_same<R, ToTimePoint>::value), "");
35    assert(std::chrono::ceil<ToDuration>(f) == t);
36    }
37}
38
39template<class FromDuration, long long From, class ToDuration, long long To>
40void test_constexpr ()
41{
42    typedef std::chrono::system_clock Clock;
43    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
44    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
45    {
46    constexpr FromTimePoint f{FromDuration{From}};
47    constexpr ToTimePoint   t{ToDuration{To}};
48    static_assert(std::chrono::ceil<ToDuration>(f) == t, "");
49    }
50}
51
52
53int main()
54{
55//  7290000ms is 2 hours, 1 minute, and 30 seconds
56    test(std::chrono::milliseconds( 7290000), std::chrono::hours( 3));
57    test(std::chrono::milliseconds(-7290000), std::chrono::hours(-2));
58    test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 122));
59    test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-121));
60
61//  9000000ms is 2 hours and 30 minutes
62    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::hours,    3> ();
63    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::hours,   -2> ();
64    test_constexpr<std::chrono::milliseconds, 9000001, std::chrono::minutes, 151> ();
65    test_constexpr<std::chrono::milliseconds,-9000001, std::chrono::minutes,-150> ();
66
67    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::seconds, 9000> ();
68    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::seconds,-9000> ();
69}
70