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 // <chrono> 11 12 #include <chrono> 13 #include <type_traits> 14 #include <cassert> 15 16 int main() 17 { 18 #if _LIBCPP_STD_VER > 11 19 using namespace std::literals::chrono_literals; 20 21 // Make sure the types are right 22 static_assert ( std::is_same<decltype( 3h ), std::chrono::hours>::value, "" ); 23 static_assert ( std::is_same<decltype( 3min ), std::chrono::minutes>::value, "" ); 24 static_assert ( std::is_same<decltype( 3s ), std::chrono::seconds>::value, "" ); 25 static_assert ( std::is_same<decltype( 3ms ), std::chrono::milliseconds>::value, "" ); 26 static_assert ( std::is_same<decltype( 3us ), std::chrono::microseconds>::value, "" ); 27 static_assert ( std::is_same<decltype( 3ns ), std::chrono::nanoseconds>::value, "" ); 28 29 std::chrono::hours h = 4h; 30 assert ( h == std::chrono::hours(4)); 31 auto h2 = 4.0h; 32 assert ( h == h2 ); 33 34 std::chrono::minutes min = 36min; 35 assert ( min == std::chrono::minutes(36)); 36 auto min2 = 36.0min; 37 assert ( min == min2 ); 38 39 std::chrono::seconds s = 24s; 40 assert ( s == std::chrono::seconds(24)); 41 auto s2 = 24.0s; 42 assert ( s == s2 ); 43 44 std::chrono::milliseconds ms = 247ms; 45 assert ( ms == std::chrono::milliseconds(247)); 46 auto ms2 = 247.0ms; 47 assert ( ms == ms2 ); 48 49 std::chrono::microseconds us = 867us; 50 assert ( us == std::chrono::microseconds(867)); 51 auto us2 = 867.0us; 52 assert ( us == us2 ); 53 54 std::chrono::nanoseconds ns = 645ns; 55 assert ( ns == std::chrono::nanoseconds(645)); 56 auto ns2 = 645.ns; 57 assert ( ns == ns2 ); 58 #endif 59 } 60