[#mp_units-constrained-operator_inc-02]
= xref:mp_units.adoc[mp&lowbar;units]::xref:mp_units/constrained.adoc[constrained]::operator&plus;&plus;
:relfileprefix: ../../
:mrdocs:

Increment operator

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:mp_units/constrained.adoc[constrained]&
operator&plus;&plus;()
requires requires(T&amp; v) &lcub;
      &lcub; &plus;&plus;v &rcub; &hyphen;&gt; std&colon;&colon;same&lowbar;as&lt;T&amp;&gt;&semi;
    &rcub;;
----

== Return Value

Reference to the current object


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