libcxx/test/std/time/years.pass.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-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
  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 }