ZAP_LEAF_HASH_NUMENTRIES
((ZAP_LEAF_HASH_NUMENTRIES(l)-1) & \
(((1<<(l)->l_bs) - 2*ZAP_LEAF_HASH_NUMENTRIES(l)) / \
((l)->l_phys->l_hash + ZAP_LEAF_HASH_NUMENTRIES(l)))[idx]
((ZAP_LEAF_HASH_NUMENTRIES(l)-1) & \
ZAP_LEAF_HASH_NUMENTRIES(l) * sizeof(*leaf->l_hash));