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/* Copyright 2013 Google Inc. All Rights Reserved. 

   Distributed under MIT license. 
   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT 
*/ 
 
/* Functions for clustering similar histograms together. */ 
 
#ifndef BROTLI_ENC_CLUSTER_H_
#define BROTLI_ENC_CLUSTER_H_

#include "../common/platform.h"
#include <brotli/types.h> 
#include "./histogram.h"
#include "./memory.h" 

#if defined(__cplusplus) || defined(c_plusplus) 
extern "C" { 
#endif 

typedef struct HistogramPair { 
  uint32_t idx1; 
  uint32_t idx2; 
  double cost_combo;
  double cost_diff;
} HistogramPair; 

#define CODE(X) /* Declaration */; 

#define FN(X) X ## Literal 
#include "./cluster_inc.h"  /* NOLINT(build/include) */ 
#undef FN 

#define FN(X) X ## Command 
#include "./cluster_inc.h"  /* NOLINT(build/include) */ 
#undef FN 

#define FN(X) X ## Distance 
#include "./cluster_inc.h"  /* NOLINT(build/include) */ 
#undef FN 

#undef CODE 

#if defined(__cplusplus) || defined(c_plusplus) 
}  /* extern "C" */ 
#endif 

#endif  /* BROTLI_ENC_CLUSTER_H_ */