popc
ulong_t w, popc = 0;
popc += dt_popc(bp[w]);
return (popc + dt_popc(bp[maxw] & ((1UL << maxb) - 1)));
nonecnt = popc(content);
defcnt = 1 + popc(content ^ CC_CONTENT_DEFAULT);
allcnt = 1 + popc(content ^ CC_CONTENT_ALL);
index = popc(bit - 1);