138 static void pqdownheap     (deflate_state *s, ct_data *tree, int k);
140 static void gen_codes      (ct_data *tree, int max_code, ush *bl_count);
142 static void scan_tree      (deflate_state *s, ct_data *tree, int max_code);
143 static void send_tree      (deflate_state *s, ct_data *tree, int max_code);
156 #  define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)  argument
160 #  define send_code(s, c, tree) \  argument
162        send_bits(s, tree[c].Code, tree[c].Len); }
350 #define pqremove(s, tree, top) \  argument
354     pqdownheap(s, tree, SMALLEST); \
361 #define smaller(tree, n, m, depth) \  argument
362    (tree[n].Freq < tree[m].Freq || \
363    (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
373 	ct_data *tree,  /* the tree to restore */  in pqdownheap()  argument
382             smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {  in pqdownheap()
386         if (smaller(tree, v, s->heap[j], s->depth)) break;  in pqdownheap()
412     ct_data *tree        = desc->dyn_tree;  in gen_bitlen()  local
430     tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */  in gen_bitlen()
434         bits = tree[tree[n].Dad].Len + 1;  in gen_bitlen()
436         tree[n].Len = (ush)bits;  in gen_bitlen()
444         f = tree[n].Freq;  in gen_bitlen()
476             if (tree[m].Len != (unsigned) bits) {  in gen_bitlen()
477                 Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));  in gen_bitlen()
478                 s->opt_len += ((long)bits - (long)tree[m].Len)  in gen_bitlen()
479                               *(long)tree[m].Freq;  in gen_bitlen()
480                 tree[m].Len = (ush)bits;  in gen_bitlen()
496 	ct_data *tree,             /* the tree to decorate */  in gen_codes()  argument
520         int len = tree[n].Len;  in gen_codes()
523         tree[n].Code = bitrev32((u32)(next_code[len]++)) >> (32 - len);  in gen_codes()
525         Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",  in gen_codes()
526              n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));  in gen_codes()
543     ct_data *tree         = desc->dyn_tree;  in build_tree()  local
557         if (tree[n].Freq != 0) {  in build_tree()
561             tree[n].Len = 0;  in build_tree()
572         tree[node].Freq = 1;  in build_tree()
582     for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);  in build_tree()
589         pqremove(s, tree, n);  /* n = node of least frequency */  in build_tree()
596         tree[node].Freq = tree[n].Freq + tree[m].Freq;  in build_tree()
598         tree[n].Dad = tree[m].Dad = (ush)node;  in build_tree()
600         if (tree == s->bl_tree) {  in build_tree()
602                     node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);  in build_tree()
607         pqdownheap(s, tree, SMALLEST);  in build_tree()
619     gen_codes ((ct_data *)tree, max_code, s->bl_count);  in build_tree()
628 	ct_data *tree,   /* the tree to be scanned */  in scan_tree()  argument
635     int nextlen = tree[0].Len; /* length of next code */  in scan_tree()
641     tree[max_code+1].Len = (ush)0xffff; /* guard */  in scan_tree()
644         curlen = nextlen; nextlen = tree[n+1].Len;  in scan_tree()
674 	ct_data *tree, /* the tree to be scanned */  in send_tree()  argument
681     int nextlen = tree[0].Len; /* length of next code */  in send_tree()
690         curlen = nextlen; nextlen = tree[n+1].Len;  in send_tree()