47 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// constexpr year operator+() const noexcept;14// constexpr year operator-() const noexcept;15 16#include <chrono>17#include <cassert>18#include <type_traits>19#include <utility>20 21#include "test_macros.h"22 23using year = std::chrono::year;24 25constexpr bool test() {26 for (int i = 10000; i <= 10020; ++i) {27 year yr(i);28 assert(static_cast<int>(+yr) == i);29 assert(static_cast<int>(-yr) == -i);30 }31 32 return true;33}34 35int main(int, char**) {36 ASSERT_NOEXCEPT(+std::declval<year>());37 ASSERT_NOEXCEPT(-std::declval<year>());38 39 ASSERT_SAME_TYPE(year, decltype(+std::declval<year>()));40 ASSERT_SAME_TYPE(year, decltype(-std::declval<year>()));41 42 test();43 static_assert(test());44 45 return 0;46}47