48 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// class year;12 13// year() = default;14// explicit constexpr year(int m) noexcept;15// explicit constexpr operator int() const noexcept;16 17// Effects: Constructs an object of type year by initializing y_ with y.18// The value held is unspecified if d is not in the range [0, 255].19 20#include <chrono>21#include <type_traits>22#include <cassert>23 24#include "test_macros.h"25 26int main(int, char**)27{28 using year = std::chrono::year;29 30 ASSERT_NOEXCEPT(year{});31 ASSERT_NOEXCEPT(year(0U));32 ASSERT_NOEXCEPT(static_cast<int>(year(0U)));33 34 constexpr year y0{};35 static_assert(static_cast<int>(y0) == 0, "");36 37 constexpr year y1{1};38 static_assert(static_cast<int>(y1) == 1, "");39 40 for (int i = 0; i <= 2550; i += 7)41 {42 year yr(i);43 assert(static_cast<int>(yr) == i);44 }45 46 return 0;47}48