CACHE_HASH
pp = &(CACHE_HASH(hdp, hval));
pp = &(CACHE_HASH(hdp, hval));
for (clp = CACHE_HASH(hdp, hval); clp != NULL; ) {
clp->hash = CACHE_HASH(hdp, hval);
CACHE_HASH(hdp, hval) = clp;
clp = CACHE_HASH(hdp, i);
fc = &ifs->ifs_frcache[out][CACHE_HASH(fin)];
# ifndef CACHE_HASH