5 Quantities and units library [quantities]

5.7 Quantity point [qty.pt]

5.7.14 Construction helper point [qty.point]

namespace mp_units { template<Reference R> struct point_ { template<typename FwdRep, RepresentationOf<get_quantity_spec(R{})> Rep = std::remove_cvref_t<FwdRep>> constexpr quantity_point<R{}, default_point_origin(R{}), Rep> operator()(FwdRep&& lhs) const; }; }

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template<typename FwdRep,
         RepresentationOf<get_quantity_spec(R{})> Rep = std::remove_cvref_t<FwdRep>>
constexpr quantity_point<R{}, default_point_origin(R{}), Rep> operator()(FwdRep&& lhs) const;

Effects: Equivalent to: return quantity_point{quantity{std::forward<FwdRep>(lhs), R{}}};