BN_print
BN_print(bio_err, dh->priv_key);
BN_print(bio_err, key);
BN_print(out, pub_key);
BN_print(bio_err, N);
BN_print(bio_err, g);
BN_print(bio_out, bn);
BN_print(out, n);
BN_print(out, n);
BN_print(out, n);
BN_print(out, dsapub);
if (!BN_print(out, *(BIGNUM **)pval))
ret = BN_print(b, a);
ok = BN_print(bio, bn);
ok = BN_print(bio, bn);
int BN_print(BIO *bio, const BIGNUM *a);
BN_print(bio_out, result);