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 
main()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