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      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 <time.h>
     11 
     12 #include <time.h>
     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 
     23 int main()
     24 {
     25     clock_t c = 0;
     26     size_t s = 0;
     27     time_t t = 0;
     28     tm tmv = {0};
     29     static_assert((std::is_same<decltype(clock()), clock_t>::value), "");
     30     static_assert((std::is_same<decltype(difftime(t,t)), double>::value), "");
     31     static_assert((std::is_same<decltype(mktime(&tmv)), time_t>::value), "");
     32     static_assert((std::is_same<decltype(time(&t)), time_t>::value), "");
     33     static_assert((std::is_same<decltype(asctime(&tmv)), char*>::value), "");
     34     static_assert((std::is_same<decltype(ctime(&t)), char*>::value), "");
     35     static_assert((std::is_same<decltype(gmtime(&t)), tm*>::value), "");
     36     static_assert((std::is_same<decltype(localtime(&t)), tm*>::value), "");
     37     char* c1 = 0;
     38     const char* c2 = 0;
     39     static_assert((std::is_same<decltype(strftime(c1,s,c2,&tmv)), size_t>::value), "");
     40 }
     41