39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
// { dg-do compile { target c++20 } }
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// Copyright (C) 2020-2024 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// Class template year_month [time.cal.year_month]
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#include <chrono>
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constexpr void
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constexpr_year_month_op_overload_disambiguation()
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{
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using namespace std::chrono;
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using decades = duration<long long, std::ratio<31556952 * 10>>;
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static_assert(std::convertible_to<decades, months>
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&& std::convertible_to<decades, years>);
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using ym = year_month;
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constexpr ym ym1 = 2015y/June;
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static_assert(ym1 + decades{1} == 2025y/June);
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static_assert(ym1 - decades{1} == 2005y/June);
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static_assert(decades{1} + ym1 == 2025y/June);
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static_assert((ym{ym1} += decades{1}) == 2025y/June);
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static_assert((ym{ym1} -= decades{1}) == 2005y/June);
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}
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