xref: /llvm-project/libcxx/test/std/time/time.clock/time.clock.steady/now.pass.cpp (revision a7f9895cc18995549c7facb96e72718da282a864)
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 // UNSUPPORTED: no-monotonic-clock
10 
11 // <chrono>
12 
13 // steady_clock
14 
15 // static time_point now();
16 
17 #include <chrono>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 
main(int,char **)22 int main(int, char**)
23 {
24     typedef std::chrono::steady_clock C;
25     C::time_point t1 = C::now();
26     C::time_point t2 = C::now();
27     assert(t2 >= t1);
28     // make sure t2 didn't wrap around
29     assert(t2 > std::chrono::time_point<C>());
30 
31   return 0;
32 }
33