sys/kern/kern_descrip.c

149 #define	NDENTRIES	(NDSLOTSIZE * __CHAR_BIT)
150 #define NDSLOT(x)	((x) / NDENTRIES)
151 #define NDBIT(x)	((NDSLOTTYPE)1 << ((x) % NDENTRIES))
152 #define	NDSLOTS(x)	(((x) + NDENTRIES - 1) / NDENTRIES)
215 	if (low % NDENTRIES) {
216 		mask = ~(~(NDSLOTTYPE)0 >> (NDENTRIES - (low % NDENTRIES)));
218 			return (off * NDENTRIES + ffsl(mask) - 1);
223 			return (off * NDENTRIES + ffsl(~map[off]) - 1);
242 			return (off * NDENTRIES + flsl(map[off]) - 1);
1907 	nnfiles = NDSLOTS(nfd) * NDENTRIES; /* round up */