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//===----------------------------------------------------------------------===//
//
// 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++03, c++11, c++14, c++17
// <chrono>
// class year;
// constexpr year operator+(const year& x, const years& y) noexcept;
// Returns: year(int{x} + y.count()).
//
// constexpr year operator+(const years& x, const year& y) noexcept;
// Returns: y + x
#include <chrono>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
template <typename Y, typename Ys>
constexpr bool testConstexpr()
{
Y y{1001};
Ys offset{23};
if (y + offset != Y{1024}) return false;
if (offset + y != Y{1024}) return false;
return true;
}
int main(int, char**)
{
using year = std::chrono::year;
using years = std::chrono::years;
ASSERT_NOEXCEPT( std::declval<year>() + std::declval<years>());
ASSERT_SAME_TYPE(year, decltype(std::declval<year>() + std::declval<years>()));
ASSERT_NOEXCEPT( std::declval<years>() + std::declval<year>());
ASSERT_SAME_TYPE(year, decltype(std::declval<years>() + std::declval<year>()));
static_assert(testConstexpr<year, years>(), "");
year y{1223};
for (int i = 1100; i <= 1110; ++i)
{
year y1 = y + years{i};
year y2 = years{i} + y;
assert(y1 == y2);
assert(static_cast<int>(y1) == i + 1223);
assert(static_cast<int>(y2) == i + 1223);
}
return 0;
}
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