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 // <chrono>
11
12 // template <class Clock, class Duration1, class Duration2>
13 // struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>
14 // {
15 // typedef chrono::time_point<Clock, typename common_type<Duration1, Duration2>::type> type;
16 // };
17
18 #include <chrono>
19
20 template <class D1, class D2, class De>
21 void
test()22 test()
23 {
24 typedef std::chrono::system_clock C;
25 typedef std::chrono::time_point<C, D1> T1;
26 typedef std::chrono::time_point<C, D2> T2;
27 typedef std::chrono::time_point<C, De> Te;
28 typedef typename std::common_type<T1, T2>::type Tc;
29 static_assert((std::is_same<Tc, Te>::value), "");
30 }
31
main()32 int main()
33 {
34 test<std::chrono::duration<int, std::ratio<1, 100> >,
35 std::chrono::duration<long, std::ratio<1, 1000> >,
36 std::chrono::duration<long, std::ratio<1, 1000> > >();
37 test<std::chrono::duration<long, std::ratio<1, 100> >,
38 std::chrono::duration<int, std::ratio<1, 1000> >,
39 std::chrono::duration<long, std::ratio<1, 1000> > >();
40 test<std::chrono::duration<char, std::ratio<1, 30> >,
41 std::chrono::duration<short, std::ratio<1, 1000> >,
42 std::chrono::duration<int, std::ratio<1, 3000> > >();
43 test<std::chrono::duration<double, std::ratio<21, 1> >,
44 std::chrono::duration<short, std::ratio<15, 1> >,
45 std::chrono::duration<double, std::ratio<3, 1> > >();
46 }
47