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rdRKF_fixed.h

// rdRKF_fixed.h
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Copyright 2003 Realistic Dynamics, Inc.
// All rights reserved.
//
// Please do not read, copy, distribute, or use without permission.
// Contact: Frank C. Anderson, fca@RealisticDynamics.com
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#ifndef __rdRKF_fixed_h__
#define __rdRKF_fixed_h__

// INCLUDES
#include "rdIntegrator.h"
#include <rdModel.h>
#include "rdRKF.h"


//=============================================================================
//=============================================================================
class RDSIMULATION_API rdRKF_fixed
{
//=============================================================================
// DATA
//=============================================================================
protected:
   rdModel *_model;
   int _ny;
   double *_yv,*_dy;
   double *_k1,*_k2,*_k3,*_k4,*_k5;

//=============================================================================
// METHODS
//=============================================================================
   //--------------------------------------------------------------------------
   // CONSTRUCTION
   //--------------------------------------------------------------------------
public:
   rdRKF_fixed(rdModel *aModel);
   virtual ~rdRKF_fixed();

   //--------------------------------------------------------------------------
   // MEMORY
   //--------------------------------------------------------------------------
private:
   int allocateMemory();
   int freeMemory();

   //--------------------------------------------------------------------------
   // GET AND SET
   //--------------------------------------------------------------------------
public:
   // SET AND GET
   rdModel* getModel();
   int getNY();

   //--------------------------------------------------------------------------
   // INTEGRATION
   //--------------------------------------------------------------------------
   int step(double dt,double t,double *xt,double *y);

//=============================================================================
}; // END class rdRKF_fixed
//=============================================================================
//=============================================================================

#endif  // __rdRKF_fixed_h__

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