[#BN_swap]
= BN_swap
:mrdocs:

Exchange the values of two BIGNUMs in constant time relative to their limb counts.

== Synopsis

Declared in `<openssl/bn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
BN_swap(
    xref:BIGNUM.adoc[BIGNUM]* a,
    xref:BIGNUM.adoc[BIGNUM]* b);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| First value.
| *b*
| Second value.
|===


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