ptree_matchnode
ok = ok && ptree_matchnode(pt, PT_NODE(node), ptn, bitoff, &tmp_bitoff, &tmp_slot);
matched = ptree_matchnode(pt, target, leaf, UINT_MAX,
|| ptree_matchnode(pt, target, ptn, target_masklen,
&& !ptree_matchnode(pt, target, ptn, branch_bitoff,
if (!ptree_matchnode(pt, target, NULL, UINT_MAX, &bitoff, &slot))