<mp-units/framework/quantity_point.h>
template<PointOrigin PO2>
requires requires(const quantity_point qp) { qp - PO2{}; }
[[nodiscard]]
constexpr
Quantity auto
quantity_from(PO2) const;
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template<QuantityPointOf<absolute_point_origin> QP>
[[nodiscard]]
constexpr
Quantity auto
quantity_from(QP const& qp) const;
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