BN_swap.3ssl man page

 #include <openssl/bn.h>

 void BN_swap(BIGNUM *a, BIGNUM *b);

BN_swap() exchanges the values of a and b.

BN_swap() does not return a value.

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Licensed under the OpenSSL license (the “License”).  You may not use this file except in compliance with the License.  You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.

bn.3ssl(3).