ctime.pass.cpp (2184B)
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 #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_C11_FEATURES) 24 #ifndef TIME_UTC 25 #error TIME_UTC not defined 26 #endif 27 #endif 28 29 #if defined(__GNUC__) 30 #pragma GCC diagnostic ignored "-Wformat-zero-length" 31 #endif 32 33 int main() 34 { 35 std::clock_t c = 0; 36 std::size_t s = 0; 37 std::time_t t = 0; 38 std::tm tm = {}; 39 char str[3]; 40 ((void)c); // Prevent unused warning 41 ((void)s); // Prevent unused warning 42 ((void)t); // Prevent unused warning 43 ((void)tm); // Prevent unused warning 44 ((void)str); // Prevent unused warning 45 #if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) 46 std::timespec tmspec = {}; 47 ((void)tmspec); // Prevent unused warning 48 #endif 49 50 static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), ""); 51 static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), ""); 52 static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), ""); 53 static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), ""); 54 #if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET) 55 static_assert((std::is_same<decltype(std::timespec_get(nullptr, 0)), int>::value), ""); 56 #endif 57 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 58 static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), ""); 59 static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), ""); 60 static_assert((std::is_same<decltype(std::gmtime(&t)), std::tm*>::value), ""); 61 static_assert((std::is_same<decltype(std::localtime(&t)), std::tm*>::value), ""); 62 #endif 63 static_assert((std::is_same<decltype(std::strftime(str,s,"",&tm)), std::size_t>::value), ""); 64 }