| //===----------------------------------------------------------------------===// |
| // |
| // 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> |
| // class year_month_day; |
| |
| // constexpr year_month_day& operator+=(const years& d) noexcept; |
| // constexpr year_month_day& operator-=(const years& d) noexcept; |
| |
| #include <chrono> |
| #include <type_traits> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| template <typename D, typename Ds> |
| constexpr bool testConstexpr(D d1) |
| { |
| if (static_cast<int>((d1 ).year()) != 1) return false; |
| if (static_cast<int>((d1 += Ds{ 1}).year()) != 2) return false; |
| if (static_cast<int>((d1 += Ds{ 2}).year()) != 4) return false; |
| if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false; |
| if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false; |
| if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false; |
| if (static_cast<int>((d1 -= Ds{12}).year()) != 1) return false; |
| return true; |
| } |
| |
| int main(int, char**) |
| { |
| using year = std::chrono::year; |
| using month = std::chrono::month; |
| using day = std::chrono::day; |
| using year_month_day = std::chrono::year_month_day; |
| using years = std::chrono::years; |
| |
| ASSERT_NOEXCEPT(std::declval<year_month_day&>() += std::declval<years>()); |
| ASSERT_NOEXCEPT(std::declval<year_month_day&>() -= std::declval<years>()); |
| |
| ASSERT_SAME_TYPE(year_month_day&, decltype(std::declval<year_month_day&>() += std::declval<years>())); |
| ASSERT_SAME_TYPE(year_month_day&, decltype(std::declval<year_month_day&>() -= std::declval<years>())); |
| |
| static_assert(testConstexpr<year_month_day, years>(year_month_day{year{1}, month{1}, day{1}}), ""); |
| |
| for (int i = 1000; i <= 1010; ++i) |
| { |
| month m{2}; |
| day d{23}; |
| year_month_day ym(year{i}, m, d); |
| assert(static_cast<int>((ym += years{2}).year()) == i + 2); |
| assert(ym.month() == m); |
| assert(ym.day() == d); |
| assert(static_cast<int>((ym ).year()) == i + 2); |
| assert(ym.month() == m); |
| assert(ym.day() == d); |
| assert(static_cast<int>((ym -= years{1}).year()) == i + 1); |
| assert(ym.month() == m); |
| assert(ym.day() == d); |
| assert(static_cast<int>((ym ).year()) == i + 1); |
| assert(ym.month() == m); |
| assert(ym.day() == d); |
| } |
| |
| return 0; |
| } |