[#BN_GENCB_free]
= BN_GENCB_free
:mrdocs:

Free a BN_GENCB allocated by BN_GENCB_new().

== Synopsis

Declared in `<openssl/bn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
BN_GENCB_free(xref:BN_GENCB.adoc[BN_GENCB]* cb);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cb*
| Callback object to free, or NULL (no‐op).
|===


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