.\" $OpenBSD: BN_swap.3,v 1.2 2016/11/06 15:52:50 jmc Exp $ .\" .Dd $Mdocdate: November 6 2016 $ .Dt BN_SWAP 3 .Os .Sh NAME .Nm BN_swap .Nd exchange BIGNUMs .Sh SYNOPSIS .In openssl/bn.h .Ft void .Fo BN_swap .Fa "BIGNUM *a" .Fa "BIGNUM *b" .Fc .Sh DESCRIPTION .Fn BN_swap exchanges the values of .Fa a and .Fa b . .Sh SEE ALSO .Xr bn 3 .Sh HISTORY BN_swap was added in OpenSSL 0.9.7.