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 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 20 template <class D1, class D2, class De> 21 void 22 test() 23 { 24 typedef typename std::common_type<D1, D2>::type Dc; 25 static_assert((std::is_same<Dc, De>::value), ""); 26 } 27 28 int 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
