osx man page for bn_dup

BN_copy(3)							      OpenSSL								BN_copy(3)

NAME
       BN_copy, BN_dup - copy BIGNUMs

SYNOPSIS
	#include <openssl/bn.h>

	BIGNUM *BN_copy(BIGNUM *to, const BIGNUM *from);

	BIGNUM *BN_dup(const BIGNUM *from);

DESCRIPTION
       BN_copy() copies from to to. BN_dup() creates a new BIGNUM containing the value from.

RETURN VALUES
       BN_copy() returns to on success, NULL on error. BN_dup() returns the new BIGNUM, and NULL on error. The error codes can be obtained by
       ERR_get_error(3).

SEE ALSO
       bn(3), ERR_get_error(3)

HISTORY
       BN_copy() and BN_dup() are available in all versions of SSLeay and OpenSSL.

0.9.8								    2009-04-03								BN_copy(3)