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51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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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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// class year;
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// constexpr year operator+() const noexcept;
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// constexpr year operator-() const noexcept;
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#include <chrono>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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template <typename Y>
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constexpr bool testConstexpr()
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{
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Y y1{1};
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if (static_cast<int>(+y1) != 1) return false;
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if (static_cast<int>(-y1) != -1) return false;
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return true;
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}
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int main()
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{
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using year = std::chrono::year;
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ASSERT_NOEXCEPT(+std::declval<year>());
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ASSERT_NOEXCEPT(-std::declval<year>());
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ASSERT_SAME_TYPE(year, decltype(+std::declval<year>()));
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ASSERT_SAME_TYPE(year, decltype(-std::declval<year>()));
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static_assert(testConstexpr<year>(), "");
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for (int i = 10000; i <= 10020; ++i)
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{
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year year(i);
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assert(static_cast<int>(+year) == i);
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assert(static_cast<int>(-year) == -i);
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}
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}
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