FAST_BITS
uint8 fast[1 << FAST_BITS];
memset(h->fast, 255, 1 << FAST_BITS);
if (s <= FAST_BITS) {
int c = h->code[i] << (FAST_BITS-s);
int m = 1 << (FAST_BITS-s);
c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1);
for (k=FAST_BITS+1 ; ; ++k)