49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
/** @file native_unit.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 "dimension.hpp"
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#include "xo/flatstring/flatstring.hpp"
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namespace xo {
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namespace qty {
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using native_unit2_abbrev_type = flatstring<8>;
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/** @class native_unit
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*
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* @brief Represent a native (built-in) unit.
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*
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* A basis_unit is expressed as a multiple of a native_unit
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*
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**/
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struct native_unit {
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public:
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constexpr native_unit(dimension native_dim,
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const native_unit2_abbrev_type & abbrev_str)
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: native_dim_{native_dim},
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abbrev_str_{abbrev_str}
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{}
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constexpr dimension native_dim() const { return native_dim_; }
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constexpr const native_unit2_abbrev_type & abbrev_str() const { return abbrev_str_; }
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private:
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dimension native_dim_;
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native_unit2_abbrev_type abbrev_str_;
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};
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static constexpr native_unit native_unit2_v[n_dim] = {
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native_unit(dimension::mass, native_unit2_abbrev_type::from_chars("g")),
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native_unit(dimension::distance, native_unit2_abbrev_type::from_chars("m")),
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native_unit(dimension::time, native_unit2_abbrev_type::from_chars("s")),
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native_unit(dimension::currency, native_unit2_abbrev_type::from_chars("ccy")),
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native_unit(dimension::price, native_unit2_abbrev_type::from_chars("px")),
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};
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} /*namespace qty*/
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} /*namespace xo*/
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/** end native_unit.hpp **/
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