b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.6 KiB
C++
44 lines
1.6 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 ToDuration, class Rep, class Period>
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// ToDuration
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// duration_cast(const duration<Rep, Period>& d);
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#include <chrono>
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#include <type_traits>
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#include <cassert>
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template <class ToDuration, class FromDuration>
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void
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test(const FromDuration& f, const ToDuration& d)
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{
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typedef decltype(std::chrono::duration_cast<ToDuration>(f)) R;
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static_assert((std::is_same<R, ToDuration>::value), "");
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assert(std::chrono::duration_cast<ToDuration>(f) == d);
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}
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int main()
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{
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test(std::chrono::milliseconds(7265000), std::chrono::hours(2));
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test(std::chrono::milliseconds(7265000), std::chrono::minutes(121));
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test(std::chrono::milliseconds(7265000), std::chrono::seconds(7265));
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test(std::chrono::milliseconds(7265000), std::chrono::milliseconds(7265000));
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test(std::chrono::milliseconds(7265000), std::chrono::microseconds(7265000000LL));
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test(std::chrono::milliseconds(7265000), std::chrono::nanoseconds(7265000000000LL));
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test(std::chrono::milliseconds(7265000),
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std::chrono::duration<double, std::ratio<3600> >(7265./3600));
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test(std::chrono::duration<int, std::ratio<2, 3> >(9),
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std::chrono::duration<int, std::ratio<3, 5> >(10));
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}
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