[#mp_units-operator_star-04]
= xref:mp_units.adoc[mp_units]::operator*
:relfileprefix: ../
:mrdocs:

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    std::derived_from<quantity> Q,
    auto R2,
    typename Rep2>
requires detail::InvocableQuantities<std::multiplies<>, quantity, quantity<R2, Rep2>>
[[nodiscard]]
constexpr
xref:mp_units/Quantity.adoc[Quantity] auto
operator*(
    Q const& lhs,
    xref:mp_units/quantity-01.adoc[quantity<R2, Rep2>] const& rhs);
----


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