[#mp_units-get_common_unit-0e]
= xref:mp_units.adoc[mp_units]::get_common_unit
:relfileprefix: ../
:mrdocs:

Returns the common unit of a single unit

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
consteval
xref:mp_units/Unit.adoc[Unit] auto
get_common_unit(auto u);
----

== Return Value

`u` unchanged

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *u*
| the unit
|===


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