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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 // <chrono>
     11 
     12 // duration
     13 
     14 // template <class Rep1, class Period1, class Rep2, class Period2>
     15 //   typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
     16 //   operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
     17 
     18 #include <chrono>
     19 #include <cassert>
     20 
     21 int main()
     22 {
     23     {
     24     std::chrono::seconds s1(3);
     25     std::chrono::seconds s2(5);
     26     std::chrono::seconds r = s1 + s2;
     27     assert(r.count() == 8);
     28     }
     29     {
     30     std::chrono::seconds s1(3);
     31     std::chrono::microseconds s2(5);
     32     std::chrono::microseconds r = s1 + s2;
     33     assert(r.count() == 3000005);
     34     }
     35     {
     36     std::chrono::duration<int, std::ratio<2, 3> > s1(3);
     37     std::chrono::duration<int, std::ratio<3, 5> > s2(5);
     38     std::chrono::duration<int, std::ratio<1, 15> > r = s1 + s2;
     39     assert(r.count() == 75);
     40     }
     41     {
     42     std::chrono::duration<int, std::ratio<2, 3> > s1(3);
     43     std::chrono::duration<double, std::ratio<3, 5> > s2(5);
     44     std::chrono::duration<double, std::ratio<1, 15> > r = s1 + s2;
     45     assert(r.count() == 75);
     46     }
     47 #ifndef _LIBCPP_HAS_NO_CONSTEXPR
     48     {
     49     constexpr std::chrono::seconds s1(3);
     50     constexpr std::chrono::seconds s2(5);
     51     constexpr std::chrono::seconds r = s1 + s2;
     52     static_assert(r.count() == 8, "");
     53     }
     54     {
     55     constexpr std::chrono::seconds s1(3);
     56     constexpr std::chrono::microseconds s2(5);
     57     constexpr std::chrono::microseconds r = s1 + s2;
     58     static_assert(r.count() == 3000005, "");
     59     }
     60     {
     61     constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
     62     constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5);
     63     constexpr std::chrono::duration<int, std::ratio<1, 15> > r = s1 + s2;
     64     static_assert(r.count() == 75, "");
     65     }
     66     {
     67     constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
     68     constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5);
     69     constexpr std::chrono::duration<double, std::ratio<1, 15> > r = s1 + s2;
     70     static_assert(r.count() == 75, "");
     71     }
     72 #endif
     73 }
     74