[#ENGINE_up_ref]
= ENGINE&lowbar;up&lowbar;ref
:mrdocs:

Increment the structural reference count of an ENGINE&period;

== Synopsis

Declared in `&lt;openssl&sol;engine&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
&lsqb;&lsqb;deprecated&rsqb;&rsqb;
int
ENGINE&lowbar;up&lowbar;ref(xref:ENGINE.adoc[ENGINE]* e);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

1 on success, or 0 on failure&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *e*
| ENGINE whose reference count is increased&period;
|===


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