33 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8// UNSUPPORTED: c++03, c++11, c++14, c++179 10// <chrono>11 12// using years = duration<signed integer type of at least 17 bits, ratio_multiply<ratio<146097, 400>, days::period>>13 14#include <chrono>15#include <limits>16#include <ratio>17#include <type_traits>18 19#include "test_macros.h"20 21int main(int, char**)22{23 typedef std::chrono::years D;24 typedef D::rep Rep;25 typedef D::period Period;26 static_assert(std::is_signed<Rep>::value, "");27 static_assert(std::is_integral<Rep>::value, "");28 static_assert(std::numeric_limits<Rep>::digits >= 17, "");29 static_assert(std::is_same_v<Period, std::ratio_multiply<std::ratio<146097, 400>, std::chrono::days::period>>, "");30 31 return 0;32}33