bn_print
static int bn_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
.prim_print = bn_print,
bn_print("want", want);
bn_print("got", got);
bn_print("a", a);
bn_print("p", p);
bn_print("b", b);
bn_print("q", q);
bn_print("m", m);
bn_print("a", a);
bn_print("m", m);
bn_print("got", got);