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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 // UNSUPPORTED: c++03, c++11, c++14, c++17
9
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
main(int,char **)21 int 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