NDENTRYSHIFT
off = want >> NDENTRYSHIFT;
return (off << NDENTRYSHIFT) + ffs(~sub) - 1;
off = (last - 1) >> NDENTRYSHIFT;
i = ((off + 1) << NDENTRYSHIFT) - 1;
u_int off = fd >> NDENTRYSHIFT;
u_int off = fd >> NDENTRYSHIFT;
fdp->fd_himap[off >> NDENTRYSHIFT] |= 1U << (off & NDENTRYMASK);
u_int off = fd >> NDENTRYSHIFT;
fdp->fd_himap[off >> NDENTRYSHIFT] &= ~(1U << (off & NDENTRYMASK));
off = i >> NDENTRYSHIFT;
(last + NDENTRIES - 1) >> NDENTRYSHIFT);
want = (new + 1) << NDENTRYSHIFT;
i += (new << NDENTRYSHIFT);
u_int fd_dhimap[NDENTRIES >> NDENTRYSHIFT];
#define NDREDUCE(x) (((x) + NDENTRIES - 1) >> NDENTRYSHIFT)
#define NDLOSLOTS(x) (NDHISLOTS(x) << NDENTRYSHIFT)