| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 9 | // <chrono> |
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| 10 | |
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| 11 | // constexpr hours make12(const hours& h) noexcept; |
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| 12 | // Returns: The 12-hour equivalent of h in the range [1h, 12h]. |
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| 13 | // If h is not in the range [0h, 23h], the value returned is unspecified. |
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| 14 | |
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| 15 | #include <chrono> |
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| 16 | #include <cassert> |
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| 17 | #include <utility> |
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| 18 | |
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| 19 | #include "test_macros.h" |
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| 20 | |
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| 21 | int main(int, char**) |
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| 22 | { |
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| 23 | using hours = std::chrono::hours; |
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| 24 | ASSERT_SAME_TYPE(hours, decltype(std::chrono::make12(std::declval<hours>()))); |
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| 25 | ASSERT_NOEXCEPT( std::chrono::make12(std::declval<hours>())); |
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| 26 | |
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| 27 | static_assert( std::chrono::make12(hours( 0)) == hours(12), "" ); |
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| 28 | static_assert( std::chrono::make12(hours(11)) == hours(11), "" ); |
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| 29 | static_assert( std::chrono::make12(hours(12)) == hours(12), "" ); |
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| 30 | static_assert( std::chrono::make12(hours(23)) == hours(11), "" ); |
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| 31 | |
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| 32 | assert( std::chrono::make12(hours(0)) == hours(12)); |
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| 33 | for (int i = 1; i < 13; ++i) |
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| 34 | assert( std::chrono::make12(hours(i)) == hours(i)); |
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| 35 | for (int i = 13; i < 24; ++i) |
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| 36 | assert( std::chrono::make12(hours(i)) == hours(i-12)); |
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| 37 | |
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| 38 | return 0; |
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| 39 | } |
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| 40 | |
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