[#BIO_up_ref]
= BIO&lowbar;up&lowbar;ref
:mrdocs:

Increment the reference count of a BIO&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BIO&lowbar;up&lowbar;ref(xref:BIO.adoc[BIO]* a);
----

== Return Value

1 on success, or 0 if reference counting is unavailable&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| BIO to reference&period;
|===


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