| //===----------------------------------------------------------------------===// |
| // |
| // 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 make12(const hours& h) noexcept; |
| // Returns: The 12-hour equivalent of h in the range [1h, 12h]. |
| // If h is not in the range [0h, 23h], 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::make12(std::declval<hours>()))); |
| ASSERT_NOEXCEPT( std::chrono::make12(std::declval<hours>())); |
| |
| static_assert( std::chrono::make12(hours( 0)) == hours(12), ""); |
| static_assert( std::chrono::make12(hours(11)) == hours(11), ""); |
| static_assert( std::chrono::make12(hours(12)) == hours(12), ""); |
| static_assert( std::chrono::make12(hours(23)) == hours(11), ""); |
| |
| assert( std::chrono::make12(hours(0)) == hours(12)); |
| for (int i = 1; i < 13; ++i) |
| assert( std::chrono::make12(hours(i)) == hours(i)); |
| for (int i = 13; i < 24; ++i) |
| assert( std::chrono::make12(hours(i)) == hours(i-12)); |
| |
| return 0; |
| } |