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 ((void)c); // avoid unused warning
25 std::size_t s = 0;
26 std::time_t t = 0;
27 std::tm tm = {0};
28 char str[3];
29 static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), "");
30 static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), "");
31 static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), "");
32 static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), "");
33 static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), "");
34 static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), "");
35 static_assert((std::is_same<decltype(std::gmtime(&t)), std::tm*>::value), "");
36 static_assert((std::is_same<decltype(std::localtime(&t)), std::tm*>::value), "");
37 static_assert((std::is_same<decltype(std::strftime(str,s,"",&tm)), std::size_t>::value), "");
38 }
39