duration.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c 
1//===----------------------------------------------------------------------===//
2//
3// ��������������������The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <chrono>
11
12// template <class Rep1, class Period1, class Rep2, class Period2>
13// struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>
14// {
15//     typedef chrono::duration<typename common_type<Rep1, Rep2>::type, see below }> type;
16// };
17
18#include <chrono>
19
20template <class D1, class D2, class De>
21void
22test()
23{
24    typedef typename std::common_type<D1, D2>::type Dc;
25    static_assert((std::is_same<Dc, De>::value), "");
26}
27
28int main()
29{
30    test<std::chrono::duration<int, std::ratio<1, 100> >,
31         std::chrono::duration<long, std::ratio<1, 1000> >,
32         std::chrono::duration<long, std::ratio<1, 1000> > >();
33    test<std::chrono::duration<long, std::ratio<1, 100> >,
34         std::chrono::duration<int, std::ratio<1, 1000> >,
35         std::chrono::duration<long, std::ratio<1, 1000> > >();
36    test<std::chrono::duration<char, std::ratio<1, 30> >,
37         std::chrono::duration<short, std::ratio<1, 1000> >,
38         std::chrono::duration<int, std::ratio<1, 3000> > >();
39    test<std::chrono::duration<double, std::ratio<21, 1> >,
40         std::chrono::duration<short, std::ratio<15, 1> >,
41         std::chrono::duration<double, std::ratio<3, 1> > >();
42}
43