21 lines
667 B
C++
21 lines
667 B
C++
/** @file quantity_concept.hpp **/
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#pragma once
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#include <concepts>
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namespace xo {
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namespace unit {
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template <typename Quantity>
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concept quantity_concept = requires(Quantity qty, typename Quantity::repr_type repr)
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{
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typename Quantity::unit_type;
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typename Quantity::repr_type;
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{ qty.scale() } -> std::same_as<typename Quantity::repr_type>;
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{ Quantity::unit_cstr() } -> std::same_as<char const *>;
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{ Quantity::unit_quantity() } -> std::same_as<Quantity>;
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{ Quantity::promote(repr) } -> std::same_as<Quantity>;
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};
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} /*namespace unit*/
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} /*namespace xo*/
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