forked from mpusz/mp-units
56 lines
2.5 KiB
C++
56 lines
2.5 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) 2018 Mateusz Pusz
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#pragma once
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#include "validated_type.h"
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#include <mp-units/bits/external/hacks.h>
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#include <mp-units/customization_points.h>
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#include <algorithm>
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#include <concepts>
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#include <type_traits>
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template<std::movable T, UNITS_CONSTRAINED_NTTP_WORKAROUND(std::convertible_to<T>) auto Min,
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UNITS_CONSTRAINED_NTTP_WORKAROUND(std::convertible_to<T>) auto Max>
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inline constexpr auto is_in_range = [](const auto& v) { return std::clamp(v, T{Min}, T{Max}) == v; };
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template<std::movable T, UNITS_CONSTRAINED_NTTP_WORKAROUND(std::convertible_to<T>) auto Min,
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UNITS_CONSTRAINED_NTTP_WORKAROUND(std::convertible_to<T>) auto Max>
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using is_in_range_t = decltype(is_in_range<T, Min, Max>);
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template<std::movable T, UNITS_CONSTRAINED_NTTP_WORKAROUND(std::convertible_to<T>) auto Min,
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UNITS_CONSTRAINED_NTTP_WORKAROUND(std::convertible_to<T>) auto Max>
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class ranged_representation : public validated_type<T, is_in_range_t<T, Min, Max>> {
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public:
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using validated_type<T, is_in_range_t<T, Min, Max>>::validated_type;
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constexpr ranged_representation() : validated_type<T, is_in_range_t<T, Min, Max>>(T{}) {}
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[[nodiscard]] constexpr ranged_representation operator-() const
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requires requires(T t) { -t; }
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{
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return ranged_representation(-this->value());
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}
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};
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template<typename T, auto Min, auto Max>
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inline constexpr bool mp_units::is_scalar<ranged_representation<T, Min, Max>> = mp_units::is_scalar<T>;
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