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 #include <ctime>
11 #include <type_traits>
12
13 #ifndef NULL
14 #error NULL not defined
15 #endif
16
17 #ifndef CLOCKS_PER_SEC
18 #error CLOCKS_PER_SEC not defined
19 #endif
20
main()21 int main()
22 {
23 std::clock_t c = 0;
24 std::size_t s = 0;
25 std::time_t t = 0;
26 std::tm tm = {};
27 char str[3];
28 ((void)c); // Prevent unused warning
29 ((void)s); // Prevent unused warning
30 ((void)t); // Prevent unused warning
31 ((void)tm); // Prevent unused warning
32 ((void)str); // Prevent unused warning
33 static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), "");
34 static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), "");
35 static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), "");
36 static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), "");
37 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
38 static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), "");
39 static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), "");
40 static_assert((std::is_same<decltype(std::gmtime(&t)), std::tm*>::value), "");
41 static_assert((std::is_same<decltype(std::localtime(&t)), std::tm*>::value), "");
42 #endif
43 static_assert((std::is_same<decltype(std::strftime(str,s,"",&tm)), std::size_t>::value), "");
44 }
45