Gabriele Cosmo
106 lines
4.0 KiB
C++
106 lines
4.0 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// DormandPrince7 - 5(4) FSAL implementation by Somnath Banerjee
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// Supervision / code review: John Apostolakis
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//
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// Sponsored by Google in Google Summer of Code 2015.
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//
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// First version: 25 May 2015
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//
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// $ID: FDormandPrince745.hh $
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//
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// History
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// ----------------------------------------------------
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// Created : 25 May 2015. - Somnath
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//
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// Added interpolate() method: - Somnath
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// 29 June 2015
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#ifndef FFDormand_Prince_745
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#define FFDormand_Prince_745
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#include "G4VFSALIntegrationStepper.hh"
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class G4FSALDormandPrince745 : public G4VFSALIntegrationStepper
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{
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public:
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G4FSALDormandPrince745(G4EquationOfMotion *EqRhs,
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G4int numberOfVariables = 6,
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G4bool primary = true);
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~G4FSALDormandPrince745();
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void Stepper( const G4double y[],
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const G4double dydx[],
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G4double h,
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G4double yout[],
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G4double yerr[],
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G4double nextDydx[]) ;
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void interpolate( const G4double yInput[],
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const G4double dydx[],
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G4double yOut[],
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G4double Step,
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G4double tau ) ;
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//For higher order Interpolant
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void SetupInterpolate( const G4double yInput[],
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const G4double dydx[],
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const G4double Step );
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//For calculating the output at the tau fraction of Step
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void Interpolate( const G4double yInput[],
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const G4double dydx[],
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const G4double Step,
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G4double yOut[],
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G4double tau );
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G4double DistChord() const;
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G4int IntegratorOrder() const {return 4; }
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G4bool isFSAL() const{ return true; }
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// G4double *getLastDydx();
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private :
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G4FSALDormandPrince745(const G4FSALDormandPrince745&);
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G4FSALDormandPrince745& operator=(const G4FSALDormandPrince745&);
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G4double *ak2, *ak3, *ak4, *ak5, *ak6, *ak7,
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*ak8, *ak9, //For additional stages in the interpolant
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*yTemp, *yIn;
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//Only for use with DistChord :-
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G4double *pseudoDydx_for_DistChord;
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G4double fLastStepLength;
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G4double *fLastInitialVector, *fLastFinalVector,
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*fInitialDyDx, *fLastDyDx, *fMidVector, *fMidError;
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// for DistChord calculations
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G4FSALDormandPrince745* fAuxStepper;
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};
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#endif /* defined(__Geant4__FSALDormandPrince745__) */
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