563     int best_len = s->prev_length;              /* best match length so far */  in longest_match()  local
579     register ush scan_end   = *(ush*)(scan+best_len-1);  in longest_match()
582     register Byte scan_end1  = scan[best_len-1];  in longest_match()
583     register Byte scan_end   = scan[best_len];  in longest_match()
613         if (*(ush*)(match+best_len-1) != scan_end ||  in longest_match()
644         if (match[best_len]   != scan_end  ||  in longest_match()
645             match[best_len-1] != scan_end1 ||  in longest_match()
675         if (len > best_len) {  in longest_match()
677             best_len = len;  in longest_match()
680             scan_end = *(ush*)(scan+best_len-1);  in longest_match()
682             scan_end1  = scan[best_len-1];  in longest_match()
683             scan_end   = scan[best_len];  in longest_match()
689     if ((uInt)best_len <= s->lookahead) return best_len;  in longest_match()