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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 // time_point
     13 
     14 // template <class Clock, class Duration1, class Duration2>
     15 //   bool
     16 //   operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
     17 
     18 // template <class Clock, class Duration1, class Duration2>
     19 //   bool
     20 //   operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
     21 
     22 // template <class Clock, class Duration1, class Duration2>
     23 //   bool
     24 //   operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
     25 
     26 // template <class Clock, class Duration1, class Duration2>
     27 //   bool
     28 //   operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
     29 
     30 #include <chrono>
     31 #include <cassert>
     32 
     33 int main()
     34 {
     35     typedef std::chrono::system_clock Clock;
     36     typedef std::chrono::milliseconds Duration1;
     37     typedef std::chrono::microseconds Duration2;
     38     typedef std::chrono::time_point<Clock, Duration1> T1;
     39     typedef std::chrono::time_point<Clock, Duration2> T2;
     40 
     41     {
     42     T1 t1(Duration1(3));
     43     T1 t2(Duration1(3));
     44     assert(!(t1 <  t2));
     45     assert(!(t1 >  t2));
     46     assert( (t1 <= t2));
     47     assert( (t1 >= t2));
     48     }
     49     {
     50     T1 t1(Duration1(3));
     51     T1 t2(Duration1(4));
     52     assert( (t1 <  t2));
     53     assert(!(t1 >  t2));
     54     assert( (t1 <= t2));
     55     assert(!(t1 >= t2));
     56     }
     57     {
     58     T1 t1(Duration1(3));
     59     T2 t2(Duration2(3000));
     60     assert(!(t1 <  t2));
     61     assert(!(t1 >  t2));
     62     assert( (t1 <= t2));
     63     assert( (t1 >= t2));
     64     }
     65     {
     66     T1 t1(Duration1(3));
     67     T2 t2(Duration2(3001));
     68     assert( (t1 <  t2));
     69     assert(!(t1 >  t2));
     70     assert( (t1 <= t2));
     71     assert(!(t1 >= t2));
     72     }
     73 
     74 #if _LIBCPP_STD_VER > 11
     75     {
     76     constexpr T1 t1(Duration1(3));
     77     constexpr T1 t2(Duration1(3));
     78     static_assert(!(t1 <  t2), "");
     79     static_assert(!(t1 >  t2), "");
     80     static_assert( (t1 <= t2), "");
     81     static_assert( (t1 >= t2), "");
     82     }
     83     {
     84     constexpr T1 t1(Duration1(3));
     85     constexpr T1 t2(Duration1(4));
     86     static_assert( (t1 <  t2), "");
     87     static_assert(!(t1 >  t2), "");
     88     static_assert( (t1 <= t2), "");
     89     static_assert(!(t1 >= t2), "");
     90     }
     91     {
     92     constexpr T1 t1(Duration1(3));
     93     constexpr T2 t2(Duration2(3000));
     94     static_assert(!(t1 <  t2), "");
     95     static_assert(!(t1 >  t2), "");
     96     static_assert( (t1 <= t2), "");
     97     static_assert( (t1 >= t2), "");
     98     }
     99     {
    100     constexpr T1 t1(Duration1(3));
    101     constexpr T2 t2(Duration2(3001));
    102     static_assert( (t1 <  t2), "");
    103     static_assert(!(t1 >  t2), "");
    104     static_assert( (t1 <= t2), "");
    105     static_assert(!(t1 >= t2), "");
    106     }
    107 #endif
    108 }
    109