rn_offset
if (x->rn_bmask & v[x->rn_offset])
if ((x->rn_bmask & m[x->rn_offset]) &&
(x->rn_bmask & v[x->rn_offset]))
x = rn_addmask(m_arg, 1, head->rnh_treetop->rn_offset);
int off = t->rn_offset, vlen = LEN(cp), matched_off;
if (t->rn_bmask & cp[t->rn_offset])
off = min(t->rn_offset, matched_off);
t->rn_offset = b >> 3;
int head_off = top->rn_offset, vlen = (int)LEN(v);
if (cp[x->rn_offset] & x->rn_bmask)
if ((cp[p->rn_offset] & p->rn_bmask) == 0)
if ((cp[t->rn_offset] & t->rn_bmask) == 0) {
if ((x = rn_addmask(netmask, 0, top->rn_offset)) == 0)
head_off = x->rn_offset;