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 // template <class Rep1, class Period1, class Rep2, class Period2> 15 // constexpr 16 // typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 17 // operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 18 19 #include <chrono> 20 #include <cassert> 21 22 #include "test_macros.h" 23 24 int main() 25 { 26 { 27 std::chrono::seconds s1(3); 28 std::chrono::seconds s2(5); 29 std::chrono::seconds r = s1 - s2; 30 assert(r.count() == -2); 31 } 32 { 33 std::chrono::seconds s1(3); 34 std::chrono::microseconds s2(5); 35 std::chrono::microseconds r = s1 - s2; 36 assert(r.count() == 2999995); 37 } 38 { 39 std::chrono::duration<int, std::ratio<2, 3> > s1(3); 40 std::chrono::duration<int, std::ratio<3, 5> > s2(5); 41 std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2; 42 assert(r.count() == -15); 43 } 44 { 45 std::chrono::duration<int, std::ratio<2, 3> > s1(3); 46 std::chrono::duration<double, std::ratio<3, 5> > s2(5); 47 std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2; 48 assert(r.count() == -15); 49 } 50 #if TEST_STD_VER >= 11 51 { 52 constexpr std::chrono::seconds s1(3); 53 constexpr std::chrono::seconds s2(5); 54 constexpr std::chrono::seconds r = s1 - s2; 55 static_assert(r.count() == -2, ""); 56 } 57 { 58 constexpr std::chrono::seconds s1(3); 59 constexpr std::chrono::microseconds s2(5); 60 constexpr std::chrono::microseconds r = s1 - s2; 61 static_assert(r.count() == 2999995, ""); 62 } 63 { 64 constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3); 65 constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5); 66 constexpr std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2; 67 static_assert(r.count() == -15, ""); 68 } 69 { 70 constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3); 71 constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5); 72 constexpr std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2; 73 static_assert(r.count() == -15, ""); 74 } 75 #endif 76 } 77
