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conststep.h

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// FILE conststep.h 

   
#ifndef  INCLUDED_CONSTSTEP_H
#define  INCLUDED_CONSTSTEP_H


#include "stepctrl.h"
#include "messgs.h"


class CONST_STEP : public STEP_CTRL
{
  
public:
  
  CONST_STEP( double h );
  
  double PredictFirstStep( const PtrODENumeric  ODE, 
                           PtrDataRepr  Data, int order );
  
  bool PredictStep( double & hPred, double h, 
                    const PtrODENumeric    ODE, 
                    const INTERVAL_VECTOR  & LocErr, 
                    const INTERVAL_VECTOR  & Ytight, 
                    int order );
  
  
  ~CONST_STEP(){};
  
  void Init( const PtrODENumeric  ODE ) { ; };
  
};


inline CONST_STEP :: CONST_STEP( double h ) : STEP_CTRL( MSG_CONST_STEP )
{
  assert( h != 0 );
  SetStepSize( h ) ;
}


inline double CONST_STEP :: PredictFirstStep( const PtrODENumeric  ODE, 
                                              PtrDataRepr  Data, int order ) 
{
  return GetStepSize(); 
}


inline bool CONST_STEP :: PredictStep( double & hPred, double h, 
                                       const PtrODENumeric  ODE, 
                                       const INTERVAL_VECTOR & LocErr, 
                                       const INTERVAL_VECTOR & Ytight, 
                                       int order )  
{
  hPred = GetStepSize();
  return true; 
}


#endif 

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