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fc25eebcac
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@344529 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
965 B
C++
30 lines
965 B
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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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// <chrono>
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// using months = duration<signed integer type of at least 20 bits, ratio_divide<years::period, ratio<12>>>;
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#include <chrono>
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#include <type_traits>
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#include <limits>
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int main()
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{
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typedef std::chrono::months D;
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typedef D::rep Rep;
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typedef D::period Period;
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static_assert(std::is_signed<Rep>::value, "");
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static_assert(std::is_integral<Rep>::value, "");
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static_assert(std::numeric_limits<Rep>::digits >= 20, "");
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static_assert(std::is_same_v<Period, std::ratio_divide<std::chrono::years::period, std::ratio<12>>>, "");
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}
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