Provided by: libssl-doc_1.0.2g-1ubuntu4.20_all 

NAME
BN_swap - exchange BIGNUMs
SYNOPSIS
#include <openssl/bn.h>
void BN_swap(BIGNUM *a, BIGNUM *b);
DESCRIPTION
BN_swap() exchanges the values of a and b.
bn(3)
HISTORY
BN_swap was added in OpenSSL 0.9.7.
1.0.2g 2016-03-01 BN_swap(3SSL)