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77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <chrono>
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// duration
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// template <class Rep1, class Period1, class Rep2, class Period2>
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// constexpr
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// typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
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// operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
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#include <chrono>
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#include <cassert>
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#include "test_macros.h"
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int main()
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{
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{
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std::chrono::seconds s1(3);
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std::chrono::seconds s2(5);
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std::chrono::seconds r = s1 - s2;
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assert(r.count() == -2);
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}
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{
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std::chrono::seconds s1(3);
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std::chrono::microseconds s2(5);
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std::chrono::microseconds r = s1 - s2;
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assert(r.count() == 2999995);
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}
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{
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std::chrono::duration<int, std::ratio<2, 3> > s1(3);
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std::chrono::duration<int, std::ratio<3, 5> > s2(5);
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std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2;
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assert(r.count() == -15);
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}
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{
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std::chrono::duration<int, std::ratio<2, 3> > s1(3);
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std::chrono::duration<double, std::ratio<3, 5> > s2(5);
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std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2;
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assert(r.count() == -15);
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}
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#if TEST_STD_VER >= 11
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{
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constexpr std::chrono::seconds s1(3);
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constexpr std::chrono::seconds s2(5);
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constexpr std::chrono::seconds r = s1 - s2;
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static_assert(r.count() == -2, "");
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}
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{
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constexpr std::chrono::seconds s1(3);
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constexpr std::chrono::microseconds s2(5);
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constexpr std::chrono::microseconds r = s1 - s2;
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static_assert(r.count() == 2999995, "");
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}
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{
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constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
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constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5);
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constexpr std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2;
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static_assert(r.count() == -15, "");
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}
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{
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constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
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constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5);
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constexpr std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2;
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static_assert(r.count() == -15, "");
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}
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#endif
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}
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