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55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
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// <chrono>
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// template <class Duration>
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// class hh_mm_ss
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//
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// constexpr bool is_negative() const noexcept;
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#include <chrono>
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#include <cassert>
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#include "test_macros.h"
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template <typename Duration>
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constexpr bool check_neg(Duration d)
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{
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ASSERT_SAME_TYPE(bool, decltype(std::declval<std::chrono::hh_mm_ss<Duration>>().is_negative()));
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ASSERT_NOEXCEPT( std::declval<std::chrono::hh_mm_ss<Duration>>().is_negative());
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return std::chrono::hh_mm_ss<Duration>(d).is_negative();
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}
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int main(int, char**)
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{
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using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
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static_assert(!check_neg(std::chrono::minutes( 1)), "");
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static_assert( check_neg(std::chrono::minutes(-1)), "");
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assert(!check_neg(std::chrono::seconds( 5000)));
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assert( check_neg(std::chrono::seconds(-5000)));
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assert(!check_neg(std::chrono::minutes( 5000)));
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assert( check_neg(std::chrono::minutes(-5000)));
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assert(!check_neg(std::chrono::hours( 11)));
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assert( check_neg(std::chrono::hours(-11)));
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assert(!check_neg(std::chrono::milliseconds( 123456789LL)));
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assert( check_neg(std::chrono::milliseconds(-123456789LL)));
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assert(!check_neg(std::chrono::microseconds( 123456789LL)));
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assert( check_neg(std::chrono::microseconds(-123456789LL)));
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assert(!check_neg(std::chrono::nanoseconds( 123456789LL)));
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assert( check_neg(std::chrono::nanoseconds(-123456789LL)));
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assert(!check_neg(microfortnights( 10000)));
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assert( check_neg(microfortnights(-10000)));
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return 0;
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}
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