66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/** @file quantity_ops.hpp
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*
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* Author: Roland Conybeare
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**/
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#pragma once
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#include "quantity2_concept.hpp"
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//#include <cstdint>
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namespace xo {
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namespace qty {
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/** note: won't have constexpr result until c++26 (when ::sqrt(), ::pow() are constexpr)
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**/
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template <typename Quantity, typename Quantity2>
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requires quantity2_concept<Quantity> && quantity2_concept<Quantity2>
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constexpr auto
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operator* (const Quantity & x, const Quantity2 & y)
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{
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return Quantity::multiply(x, y);
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}
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/** note: does not require unit scaling, so constexpr with c++23 **/
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template <typename Dimensionless, typename Quantity>
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requires std::is_arithmetic_v<Dimensionless> && quantity2_concept<Quantity>
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constexpr auto
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operator* (Dimensionless x, const Quantity & y)
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{
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return y.scale_by(x);
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}
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/** note: does not require unit scaling, so constexpr with c++23 **/
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template <typename Dimensionless, typename Quantity>
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requires std::is_arithmetic_v<Dimensionless> && quantity2_concept<Quantity>
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constexpr auto
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operator* (const Quantity & x, Dimensionless y)
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{
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return x.scale_by(y);
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}
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/** note: won't have constexpr result until c++26 (when ::sqrt(), ::pow() are constexpr)
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**/
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template <typename Quantity, typename Quantity2>
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requires quantity2_concept<Quantity> && quantity2_concept<Quantity2>
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constexpr auto
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operator== (const Quantity & x, const Quantity2 & y)
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{
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return (Quantity::compare(x, y) == 0);
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}
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/** note: won't have constexpr result until c++26 (when ::sqrt(), ::pow() are constexpr)
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**/
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template <typename Quantity, typename Quantity2>
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requires quantity2_concept<Quantity> && quantity2_concept<Quantity2>
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constexpr auto
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operator<=> (const Quantity & x, const Quantity2 & y)
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{
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return Quantity::compare(x, y);
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}
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} /*namespace qty*/
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} /*namespace xo*/
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/** end quantity_ops.hpp **/
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