forked from OSchip/llvm-project
43 lines
1.5 KiB
C++
43 lines
1.5 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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// template <class Rep1, class Period1, class Rep2, class Period2>
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// struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>
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// {
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// typedef chrono::duration<typename common_type<Rep1, Rep2>::type, see below }> type;
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// };
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#include <chrono>
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template <class D1, class D2, class De>
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void
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test()
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{
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typedef typename std::common_type<D1, D2>::type Dc;
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static_assert((std::is_same<Dc, De>::value), "");
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}
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int main()
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{
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test<std::chrono::duration<int, std::ratio<1, 100> >,
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std::chrono::duration<long, std::ratio<1, 1000> >,
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std::chrono::duration<long, std::ratio<1, 1000> > >();
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test<std::chrono::duration<long, std::ratio<1, 100> >,
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std::chrono::duration<int, std::ratio<1, 1000> >,
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std::chrono::duration<long, std::ratio<1, 1000> > >();
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test<std::chrono::duration<char, std::ratio<1, 30> >,
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std::chrono::duration<short, std::ratio<1, 1000> >,
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std::chrono::duration<int, std::ratio<1, 3000> > >();
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test<std::chrono::duration<double, std::ratio<21, 1> >,
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std::chrono::duration<short, std::ratio<15, 1> >,
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std::chrono::duration<double, std::ratio<3, 1> > >();
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}
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