forked from mpusz/mp-units
106 lines
4.5 KiB
C++
106 lines
4.5 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 <units/base_dimensions.h>
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#include <units/quantity.h>
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namespace units {
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struct dimension_length : make_dimension_t<exp<base_dim_length, 1>> {};
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template<> struct downcasting_traits<downcast_from<dimension_length>> : downcast_to<dimension_length> {};
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template<typename T>
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concept bool Length = Quantity<T> && std::Same<typename T::dimension, dimension_length>;
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template<Unit U = struct meter, Number Rep = double>
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using length = quantity<dimension_length, U, Rep>;
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// SI units
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struct meter : unit<dimension_length> {};
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template<> struct downcasting_traits<downcast_from<meter>> : downcast_to<meter> {};
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struct millimeter : milli<meter> {};
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template<> struct downcasting_traits<downcast_from<millimeter>> : downcast_to<millimeter> {};
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struct centimeter : centi<meter> {};
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template<> struct downcasting_traits<downcast_from<centimeter>> : downcast_to<centimeter> {};
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struct kilometer : kilo<meter> {};
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template<> struct downcasting_traits<downcast_from<kilometer>> : downcast_to<kilometer> {};
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inline namespace literals {
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// mm
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constexpr auto operator""_mm(unsigned long long l) { return length<millimeter, std::int64_t>(l); }
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constexpr auto operator""_mm(long double l) { return length<millimeter, long double>(l); }
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// cm
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constexpr auto operator""_cm(unsigned long long l) { return length<centimeter, std::int64_t>(l); }
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constexpr auto operator""_cm(long double l) { return length<centimeter, long double>(l); }
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// m
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constexpr auto operator""_m(unsigned long long l) { return length<meter, std::int64_t>(l); }
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constexpr auto operator""_m(long double l) { return length<meter, long double>(l); }
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// km
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constexpr auto operator""_km(unsigned long long l) { return length<kilometer, std::int64_t>(l); }
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constexpr auto operator""_km(long double l) { return length<kilometer, long double>(l); }
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} // namespace literals
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// US customary units
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struct yard : unit<dimension_length, ratio<9'144, 10'000>> {};
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template<> struct downcasting_traits<downcast_from<yard>> : downcast_to<yard> {};
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struct foot : unit<dimension_length, ratio_multiply<ratio<1, 3>, yard::ratio>> {};
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template<> struct downcasting_traits<downcast_from<foot>> : downcast_to<foot> {};
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struct inch : unit<dimension_length, ratio_multiply<ratio<1, 12>, foot::ratio>> {};
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template<> struct downcasting_traits<downcast_from<inch>> : downcast_to<inch> {};
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struct mile : unit<dimension_length, ratio_multiply<ratio<1'760>, yard::ratio>> {};
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template<> struct downcasting_traits<downcast_from<mile>> : downcast_to<mile> {};
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inline namespace literals {
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// yd
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constexpr auto operator""_yd(unsigned long long l) { return length<yard, std::int64_t>(l); }
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constexpr auto operator""_yd(long double l) { return length<yard, long double>(l); }
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// ft
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constexpr auto operator""_ft(unsigned long long l) { return length<foot, std::int64_t>(l); }
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constexpr auto operator""_ft(long double l) { return length<foot, long double>(l); }
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// in
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constexpr auto operator""_in(unsigned long long l) { return length<inch, std::int64_t>(l); }
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constexpr auto operator""_in(long double l) { return length<inch, long double>(l); }
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// mi
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constexpr auto operator""_mi(unsigned long long l) { return length<mile, std::int64_t>(l); }
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constexpr auto operator""_mi(long double l) { return length<mile, long double>(l); }
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} // namespace literals
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} // namespace units
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