ctime.pass.cpp (2180B)
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 #include "test_macros.h" 15 16 #ifndef NULL 17 #error NULL not defined 18 #endif 19 20 #ifndef CLOCKS_PER_SEC 21 #error CLOCKS_PER_SEC not defined 22 #endif 23 24 #if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) 25 #ifndef TIME_UTC 26 #error TIME_UTC not defined 27 #endif 28 #endif 29 30 int main() 31 { 32 std::clock_t c = 0; 33 std::size_t s = 0; 34 std::time_t t = 0; 35 std::tm tm = {}; 36 #if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES) 37 std::timespec tmspec = {}; 38 ((void)tmspec); // Prevent unused warning 39 #endif 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 static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), ""); 45 static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), ""); 46 static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), ""); 47 static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), ""); 48 #if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET) 49 static_assert((std::is_same<decltype(std::timespec_get(nullptr, 0)), int>::value), ""); 50 #endif 51 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS 52 static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), ""); 53 static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), ""); 54 static_assert((std::is_same<decltype(std::gmtime(&t)), std::tm*>::value), ""); 55 static_assert((std::is_same<decltype(std::localtime(&t)), std::tm*>::value), ""); 56 #endif 57 char* c1 = 0; 58 const char* c2 = 0; 59 ((void)c1); // Prevent unused warning 60 ((void)c2); // Prevent unused warning 61 static_assert((std::is_same<decltype(std::strftime(c1,s,c2,&tm)), std::size_t>::value), ""); 62 }