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

Construct from `Value`

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename Value>
requires detail::ExplicitFromNumber<reference> && detail::RepConvertibleFrom<rep, Value> &&
             (!std::convertible_to<Value, rep>)
constexpr
explicit
quantity(Value val);
----

== Parameters

[cols="1,4"]
|===
|Name|Description

| *val*
| The object to construct from
|===


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