| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 |
| // <chrono> |
| |
| // constexpr hours make24(const hours& h, bool is_pm) noexcept; |
| // Returns: If is_pm is false, returns the 24-hour equivalent of h in the range [0h, 11h], |
| // assuming h represents an ante meridiem hour. |
| // Else returns the 24-hour equivalent of h in the range [12h, 23h], |
| // assuming h represents a post meridiem hour. |
| // If h is not in the range [1h, 12h], the value returned is unspecified. |
| |
| #include <chrono> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| using hours = std::chrono::hours; |
| ASSERT_SAME_TYPE(hours, decltype(std::chrono::make24(std::declval<hours>(), false))); |
| ASSERT_NOEXCEPT( std::chrono::make24(std::declval<hours>(), false)); |
| |
| static_assert( std::chrono::make24(hours( 1), false) == hours( 1), ""); |
| static_assert( std::chrono::make24(hours(11), false) == hours(11), ""); |
| static_assert( std::chrono::make24(hours(12), false) == hours( 0), ""); |
| static_assert( std::chrono::make24(hours( 1), true) == hours(13), ""); |
| static_assert( std::chrono::make24(hours(11), true) == hours(23), ""); |
| static_assert( std::chrono::make24(hours(12), true) == hours(12), ""); |
| |
| for (int i = 1; i < 11; ++i) |
| { |
| assert((std::chrono::make24(hours(i), false)) == hours(i)); |
| assert((std::chrono::make24(hours(i), true)) == hours(12+i)); |
| } |
| assert((std::chrono::make24(hours(12), false)) == hours( 0)); |
| assert((std::chrono::make24(hours(12), true)) == hours(12)); |
| |
| return 0; |
| } |