[#BIO_int_ctrl]
= BIO&lowbar;int&lowbar;ctrl
:mrdocs:

Invoke a BIO ctrl that takes an integer argument in the low word&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
long
BIO&lowbar;int&lowbar;ctrl(
    xref:BIO.adoc[BIO]* bp,
    int cmd,
    long larg,
    int iarg);
----

== Return Value

Command&hyphen;specific long result, or &lt;&equals;0 on error depending on `cmd&period;`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *bp*
| BIO to control&period;
| *cmd*
| Control command&period;
| *larg*
| Long argument for the control operation&period;
| *iarg*
| Integer argument packed into the ctrl call&period;
|===


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