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// test <ctime>
11
12#include <ctime>
13#include <type_traits>
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
23int main()
24{
25    std::clock_t c = 0;
26    std::size_t s = 0;
27    std::time_t t = 0;
28    std::tm tm = {0};
29    ((void)c); // Prevent unused warning
30    ((void)s); // Prevent unused warning
31    ((void)t); // Prevent unused warning
32    ((void)tm); // 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    char* c1 = 0;
44    const char* c2 = 0;
45    ((void)c1); // Prevent unused warning
46    ((void)c2); // Prevent unused warning
47    static_assert((std::is_same<decltype(std::strftime(c1,s,c2,&tm)), std::size_t>::value), "");
48}
49