[#mp_units-reference_for-09]
= xref:mp_units.adoc[mp_units]::reference_for<xref:mp_units/quantity-01.adoc[quantity<R, Rep>]>
:relfileprefix: ../
:mrdocs:

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    auto R,
    typename Rep>
constexpr auto reference_for<quantity<R, Rep>> = R;
----


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