[#mp_units-quantity-01-2constructor-03]
= xref:mp_units.adoc[mp_units]::xref:mp_units/quantity-01.adoc[quantity]::quantity
:relfileprefix: ../../
:mrdocs:

Constructor

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename FwdValue,
    xref:mp_units/Reference.adoc[Reference] R2>
requires (!equivalent(unit, get_unit(R2{}))) &&
            detail::QuantityConstructibleFrom<quantity, quantity<R2{}, std::remove_cvref_t<FwdValue>>>
constexpr
quantity(
    FwdValue&& val,
    R2);
----

== Parameters

[cols=2]
|===
| Name
| Description
| *val*
| The object to move construct from
|===


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