BMAP_CHUNK_BITS
#define HASH(p) (((p) / BMAP_CHUNK_BITS) % BMAP_HASH_SIZE)
n = len / BMAP_CHUNK_BITS;
cl = (uint_t)(len % BMAP_CHUNK_BITS);
for (q = 0; q < bmp->bm_len; q += BMAP_CHUNK_BITS) {
if (l >= BMAP_CHUNK_BITS) {
cl = BMAP_CHUNK_BITS;
#define BMAP_CHUNK_NO(p) ((p) / BMAP_CHUNK_BITS)
#define BMAP_CHUNK_OFF(p) (BMAP_CHUNK_NO(p) * BMAP_CHUNK_BITS)
if (l >= BMAP_CHUNK_BITS) {
cl = BMAP_CHUNK_BITS;