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costbase.h

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#ifndef _COSTBASE_H_
#define _COSTBASE_H_

#include "packnode.h"




class costbase
{
private:
  costbase( const costbase &rhs ) {}

protected:
  void traverse( packnode<double> *node )
  {
    if (node != 0) {
      double cost = costCalc( node );
      node->cost( cost );
    
      traverse( node->lhsChild() );
      traverse( node->rhsChild() );
    }
  } // traverse 

  virtual double costCalc(packnode<double> *node) = 0;

public:
  costbase() {}

}; // costbase

#endif

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