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 // test <ctime>
10
11 #include <ctime>
12 #include <type_traits>
13 #include "test_macros.h"
14
15 #ifndef NULL
16 #error NULL not defined
17 #endif
18
19 #ifndef CLOCKS_PER_SEC
20 #error CLOCKS_PER_SEC not defined
21 #endif
22
23 #if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
24 #ifndef TIME_UTC
25 #error TIME_UTC not defined
26 #endif
27 #endif
28
main(int,char **)29 int main(int, char**)
30 {
31 std::clock_t c = 0;
32 std::size_t s = 0;
33 std::time_t t = 0;
34 std::tm tm = {};
35 #if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
36 std::timespec tmspec = {};
37 ((void)tmspec); // Prevent unused warning
38 #endif
39 ((void)c); // Prevent unused warning
40 ((void)s); // Prevent unused warning
41 ((void)t); // Prevent unused warning
42 ((void)tm); // Prevent unused warning
43 static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), "");
44 static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), "");
45 static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), "");
46 static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), "");
47 #if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
48 static_assert((std::is_same<decltype(std::timespec_get(&tmspec, 0)), int>::value), "");
49 #endif
50 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
51 static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), "");
52 static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), "");
53 static_assert((std::is_same<decltype(std::gmtime(&t)), std::tm*>::value), "");
54 static_assert((std::is_same<decltype(std::localtime(&t)), std::tm*>::value), "");
55 #endif
56 char* c1 = 0;
57 const char* c2 = 0;
58 ((void)c1); // Prevent unused warning
59 ((void)c2); // Prevent unused warning
60 static_assert((std::is_same<decltype(std::strftime(c1,s,c2,&tm)), std::size_t>::value), "");
61
62 return 0;
63 }
64