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 // duration 13 14 // duration& operator-=(const duration& d); 15 16 #include <chrono> 17 #include <cassert> 18 19 #include "test_macros.h" 20 21 #if TEST_STD_VER > 14 22 constexpr bool test_constexpr() 23 { 24 std::chrono::seconds s(3); 25 s -= std::chrono::seconds(2); 26 if (s.count() != 1) return false; 27 s -= std::chrono::minutes(2); 28 return s.count() == -119; 29 } 30 #endif 31 32 int main() 33 { 34 { 35 std::chrono::seconds s(3); 36 s -= std::chrono::seconds(2); 37 assert(s.count() == 1); 38 s -= std::chrono::minutes(2); 39 assert(s.count() == -119); 40 } 41 42 #if TEST_STD_VER > 14 43 static_assert(test_constexpr(), ""); 44 #endif 45 } 46
