[#mp_units-dimension_one-063]
= xref:mp_units.adoc[mp&lowbar;units]::dimension&lowbar;one
:relfileprefix: ../
:mrdocs:

Dimension one

== Synopsis

Declared in `&lt;mp&hyphen;units&sol;framework&sol;dimension&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct dimension&lowbar;one final
    : &sol;&ast; implementation-defined &ast;&sol;
    , &sol;&ast; implementation-defined &ast;&sol;
----

== Description

Dimension for which all the exponents of the factors corresponding to the base dimensions are zero&period; It is a dimension of a quantity of dimension one also known as &quot;dimensionless&quot;&period;

== Base Classes

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

| `&sol;&ast; implementation-defined &ast;&sol;`
| 
| `&sol;&ast; implementation-defined &ast;&sol;`
| 
|===


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