[#BN_CTX_start]
= BN_CTX_start
:mrdocs:

Begin a temporary BIGNUM frame on a BN_CTX.

== Synopsis

Declared in `<openssl/bn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
BN_CTX_start(xref:BN_CTX.adoc[BN_CTX]* ctx);
----

== Description

Pair with BN_CTX_end(). BIGNUMs obtained via BN_CTX_get() after start are released (not freed) when the matching end is called.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Context whose allocation frame is pushed.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#