| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| |
| // <chrono> |
| |
| // using months = duration<signed integer type of at least 20 bits, ratio_divide<years::period, ratio<12>>>; |
| |
| |
| #include <chrono> |
| #include <type_traits> |
| #include <limits> |
| |
| int main() |
| { |
| typedef std::chrono::months D; |
| typedef D::rep Rep; |
| typedef D::period Period; |
| static_assert(std::is_signed<Rep>::value, ""); |
| static_assert(std::is_integral<Rep>::value, ""); |
| static_assert(std::numeric_limits<Rep>::digits >= 20, ""); |
| static_assert(std::is_same_v<Period, std::ratio_divide<std::chrono::years::period, std::ratio<12>>>, ""); |
| } |
