44 /* number of distance codes */
126      * bytes. With this organization, matches are limited to a distance of
203     struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
207     struct tree_desc_s d_desc;               /* desc. for distance tree */
316 /* Mapping from a distance to a distance code. dist is the distance - 1 and
340 # define _tr_tally_dist(s, distance, length, flush) \  argument
342     ush dist = (ush)(distance); \
359 # define _tr_tally_dist(s, distance, length, flush) \  argument
361     ush dist = (ush)(distance); \
373 # define _tr_tally_dist(s, distance, length, flush) \  argument
374               flush = _tr_tally(s, distance, length)