185                                         int* const num_used) {  in HistogramSetRemoveHistogram()  argument
188   --*num_used;  in HistogramSetRemoveHistogram()
584                                     int* const num_used,  in HistogramCopyAndAnalyze()  argument
587   int num_used_orig = *num_used;  in HistogramCopyAndAnalyze()
603       HistogramSetRemoveHistogram(image_histo, i, num_used);  in HistogramCopyAndAnalyze()
645                                        int* num_used,  in HistogramCombineEntropyBin()  argument
668   for (idx = 0; idx < *num_used; ++idx) cluster_mappings[idx] = idx;  in HistogramCombineEntropyBin()
678       HistogramSetRemoveHistogram(image_histo, idx, num_used);  in HistogramCombineEntropyBin()
702           HistogramSetRemoveHistogram(image_histo, idx, num_used);  in HistogramCombineEntropyBin()
838                                   int* const num_used) {  in HistogramCombineGreedy()  argument
873     HistogramSetRemoveHistogram(image_histo, idx2, num_used);  in HistogramCombineGreedy()
909                                       int* const num_used, int min_cluster_size,  in HistogramCombineStochastic()  argument
914   const int outer_iters = *num_used;  in HistogramCombineStochastic()
927   if (*num_used < min_cluster_size) {  in HistogramCombineStochastic()
932   mappings = (int*) WebPSafeMalloc(*num_used, sizeof(*mappings));  in HistogramCombineStochastic()
940   assert(j == *num_used);  in HistogramCombineStochastic()
944        iter < outer_iters && *num_used >= min_cluster_size &&  in HistogramCombineStochastic()
951     const uint32_t rand_range = (*num_used - 1) * (*num_used);  in HistogramCombineStochastic()
954     const int num_tries = (*num_used) / 2;  in HistogramCombineStochastic()
957     for (j = 0; *num_used >= 2 && j < num_tries; ++j) {  in HistogramCombineStochastic()
961       uint32_t idx1 = tmp / (*num_used - 1);  in HistogramCombineStochastic()
962       uint32_t idx2 = tmp % (*num_used - 1);  in HistogramCombineStochastic()
983     mapping_index = (int*) bsearch(&best_idx2, mappings, *num_used,  in HistogramCombineStochastic()
987         ((*num_used) - (mapping_index - mappings) - 1));  in HistogramCombineStochastic()
992     HistogramSetRemoveHistogram(image_histo, best_idx2, num_used);  in HistogramCombineStochastic()
1034   *do_greedy = (*num_used <= min_cluster_size);  in HistogramCombineStochastic()
1192   int num_used = image_histo_raw_size;  in VP8LGetHistoImageSymbols()  local
1199   HistogramCopyAndAnalyze(orig_histo, image_histo, &num_used,  in VP8LGetHistoImageSymbols()
1203       (num_used > entropy_combine_num_bins * 2) && (quality < 100);  in VP8LGetHistoImageSymbols()
1209     const uint32_t num_clusters = num_used;  in VP8LGetHistoImageSymbols()
1213     HistogramCombineEntropyBin(image_histo, &num_used, histogram_symbols,  in VP8LGetHistoImageSymbols()
1228     if (!HistogramCombineStochastic(image_histo, &num_used, threshold_size,  in VP8LGetHistoImageSymbols()
1234       if (!HistogramCombineGreedy(image_histo, &num_used)) {  in VP8LGetHistoImageSymbols()