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xo-unit: + always_constexpr_unit flag in quantity,xquantity

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This commit is contained in:
Roland Conybeare 2024-05-03 01:36:05 -04:00
commit be24d649eb
2 changed files with 7 additions and 3 deletions
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2
include/xo/unit/quantity.hpp
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@ -34,6 +34,8 @@ namespace xo {
constexpr quantity() : scale_{0} {}
explicit constexpr quantity(Repr scale) : scale_{scale} {}
static constexpr bool always_constexpr_unit = true;
constexpr const repr_type & scale() const { return scale_; }
constexpr const unit_type & unit() const { return s_unit; }

8
include/xo/unit/xquantity.hpp
View file

@ -41,9 +41,11 @@ namespace xo {
constexpr xquantity()
: scale_{0}, unit_{natural_unit<Int>()} {}
constexpr xquantity(Repr scale,
const natural_unit<Int> & unit)
const natural_unit<Int> & unit)
: scale_{scale}, unit_{unit} {}
static constexpr bool always_constexpr_unit = false;
constexpr const repr_type & scale() const { return scale_; }
constexpr const unit_type & unit() const { return unit_; }
@ -105,7 +107,7 @@ namespace xo {
* static_cast<r_repr_type>(y.scale()));
return xquantity<r_repr_type, r_int_type>(r_scale,
rr.natural_unit_);
rr.natural_unit_);
}
template <typename Quantity2>
@ -221,7 +223,7 @@ namespace xo {
Repr scale_ = Repr{};
/** @brief unit for this quantity **/
natural_unit<Int> unit_;
}; /*Quantity*/
}; /*xquantity*/
/** note: won't have constexpr result until c++26 (when ::sqrt(), ::pow() are constexpr)
**/