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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
11 // <chrono>
12 
13 #include <chrono>
14 #include <type_traits>
15 #include <cassert>
16 
17 #include "test_macros.h"
18 
main()19 int main()
20 {
21     using namespace std::literals::chrono_literals;
22 
23 //    Make sure the types are right
24     static_assert ( std::is_same<decltype( 3h   ), std::chrono::hours>::value, "" );
25     static_assert ( std::is_same<decltype( 3min ), std::chrono::minutes>::value, "" );
26     static_assert ( std::is_same<decltype( 3s   ), std::chrono::seconds>::value, "" );
27     static_assert ( std::is_same<decltype( 3ms  ), std::chrono::milliseconds>::value, "" );
28     static_assert ( std::is_same<decltype( 3us  ), std::chrono::microseconds>::value, "" );
29     static_assert ( std::is_same<decltype( 3ns  ), std::chrono::nanoseconds>::value, "" );
30 
31     std::chrono::hours h = 4h;
32     assert ( h == std::chrono::hours(4));
33     auto h2 = 4.0h;
34     assert ( h == h2 );
35 
36     std::chrono::minutes min = 36min;
37     assert ( min == std::chrono::minutes(36));
38     auto min2 = 36.0min;
39     assert ( min == min2 );
40 
41     std::chrono::seconds s = 24s;
42     assert ( s == std::chrono::seconds(24));
43     auto s2 = 24.0s;
44     assert ( s == s2 );
45 
46     std::chrono::milliseconds ms = 247ms;
47     assert ( ms == std::chrono::milliseconds(247));
48     auto ms2 = 247.0ms;
49     assert ( ms == ms2 );
50 
51     std::chrono::microseconds us = 867us;
52     assert ( us == std::chrono::microseconds(867));
53     auto us2 = 867.0us;
54     assert ( us == us2 );
55 
56     std::chrono::nanoseconds ns = 645ns;
57     assert ( ns == std::chrono::nanoseconds(645));
58     auto ns2 = 645.ns;
59     assert ( ns == ns2 );
60 
61 }
62