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//
// Class description:
//
// Description: Continuous Process to calculate energy loss without 
//              fluctuations through G4EnergyLossForExtrapolator

// History:
//   Created:     2007-05-12
//   Author:      Pedro Arce
//
//   Modified:
//

#ifndef G4ErrorEnergyLoss_hh
#define G4ErrorEnergyLoss_hh

#include "globals.hh"
#include "G4VContinuousProcess.hh"
#include "G4ProcessType.hh"

class G4EnergyLossForExtrapolator;

class G4ErrorEnergyLoss : public G4VContinuousProcess
{

public: 

  G4ErrorEnergyLoss(const G4String& processName = "G4ErrorEnergyLoss",
		    G4ProcessType type = fElectromagnetic);

  virtual ~G4ErrorEnergyLoss();	


  G4bool IsApplicable(const G4ParticleDefinition& aParticleType);
  // Returns true -> 'is applicable', for all charged particles.

  G4double GetContinuousStepLimit(const G4Track& aTrack,
				  G4double     ,
				  G4double currentMinimumStep,
				  G4double& );
  // Returns DBL_MAX as continuous step limit

  G4VParticleChange* AlongStepDoIt(const G4Track& aTrack, 
				   const G4Step&  aStep);
  // This is the method implementing the energy loss process.

  // Get and Set methods
  G4double GetStepLimit() const { return theStepLimit; }
  void SetStepLimit( G4double val ) { theStepLimit = val; }

private:

  void InstantiateEforExtrapolator();
  // Create the G4EnergyLossForExtrapolator

private:
  G4EnergyLossForExtrapolator* theELossForExtrapolator;

  G4double theStepLimit;
};

////////////////////
// Inline methods
////////////////////

inline 
G4bool G4ErrorEnergyLoss::IsApplicable(const G4ParticleDefinition& aParticleType)
{
   return (aParticleType.GetPDGCharge() != 0);
}

#endif /* G4ErrorEnergyLoss_hh */