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-=pod
-
-=head1 NAME
-
-BN_copy, BN_dup - copy BIGNUMs
-
-=head1 SYNOPSIS
-
- #include <openssl/bn.h>
-
- BIGNUM *BN_copy(BIGNUM *to, const BIGNUM *from);
-
- BIGNUM *BN_dup(const BIGNUM *from);
-
-=head1 DESCRIPTION
-
-BN_copy() copies B<from> to B<to>. BN_dup() creates a new B<BIGNUM>
-containing the value B<from>.
-
-=head1 RETURN VALUES
-
-BN_copy() returns B<to> on success, NULL on error. BN_dup() returns
-the new B<BIGNUM>, and NULL on error. The error codes can be obtained
-by L<ERR_get_error(3)|ERR_get_error(3)>.
-
-=head1 SEE ALSO
-
-L<bn(3)|bn(3)>, L<ERR_get_error(3)|ERR_get_error(3)>
-
-=head1 HISTORY
-
-BN_copy() and BN_dup() are available in all versions of SSLeay and OpenSSL.
-
-=cut