[#BIO_get_init]
= BIO&lowbar;get&lowbar;init
:mrdocs:

Test whether a custom BIO has been initialized by its create() callback&period;

== Synopsis

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

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

== Return Value

Non&hyphen;zero if initialized, or 0 otherwise&period;

== Parameters

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


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