libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_duration.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <chrono>
  10
  11 // duration
  12
  13 // template <class Rep1, class Period1, class Rep2, class Period2>
  14 //   constexpr
  15 //   typename common_type<Rep1, Rep2>::type
  16 //   operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
  17
  18 #include <chrono>
  19 #include <cassert>
  20 #include <ratio>
  21
  22 #include "test_macros.h"
  23 #include "truncate_fp.h"
  24 #include "../../rep.h"
  25
  26 int main(int, char**)
  27 {
  28     {
  29     std::chrono::nanoseconds ns1(15);
  30     std::chrono::nanoseconds ns2(5);
  31     assert(ns1 / ns2 == 3);
  32     }
  33     {
  34     std::chrono::microseconds us1(15);
  35     std::chrono::nanoseconds ns2(5);
  36     assert(us1 / ns2 == 3000);
  37     }
  38     {
  39     std::chrono::duration<int, std::ratio<2, 3> > s1(30);
  40     std::chrono::duration<int, std::ratio<3, 5> > s2(5);
  41     assert(s1 / s2 == 6);
  42     }
  43     {
  44     std::chrono::duration<int, std::ratio<2, 3> > s1(30);
  45     std::chrono::duration<double, std::ratio<3, 5> > s2(5);
  46     assert(s1 / s2 == truncate_fp(20./3));
  47     }
  48 #if TEST_STD_VER >= 11
  49     {
  50     constexpr std::chrono::nanoseconds ns1(15);
  51     constexpr std::chrono::nanoseconds ns2(5);
  52     static_assert(ns1 / ns2 == 3, "");
  53     }
  54     {
  55     constexpr std::chrono::microseconds us1(15);
  56     constexpr std::chrono::nanoseconds ns2(5);
  57     static_assert(us1 / ns2 == 3000, "");
  58     }
  59     {
  60     constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(30);
  61     constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5);
  62     static_assert(s1 / s2 == 6, "");
  63     }
  64     {
  65     constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(30);
  66     constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5);
  67     static_assert(s1 / s2 == 20./3, "");
  68     }
  69     {
  70       std::chrono::duration<int> d(5);
  71       RepConstConvertibleLWG3050 x;
  72
  73       {
  74         auto r = d / x;
  75         assert(r.count() == 2);
  76         ASSERT_SAME_TYPE(std::chrono::duration<long>, decltype(r));
  77       }
  78     }
  79 #endif // TEST_STD_VER >= 11
  80
  81     return 0;
  82 }