[#mp_units-operator_minus-01]
= xref:mp_units.adoc[mp_units]::operator‐
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<mp‐units/framework/quantity_point.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    std::derived_from<quantity_point> QP,
    xref:mp_units/PointOrigin.adoc[PointOrigin] PO2>
requires QuantityPointOf<quantity_point, PO2{}> &&
             ReferenceOf<MP_UNITS_NONCONST_TYPE(reference), PO2::_quantity_spec_>
[[nodiscard]]
constexpr
xref:mp_units/Quantity.adoc[Quantity] auto
operator‐(
    QP const& qp,
    PO2 po);
----


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