Gabriele Cosmo
68 lines
2.8 KiB
C++
68 lines
2.8 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
// G4HelixExplicitEuler
|
|
//
|
|
// Class description:
|
|
//
|
|
// Helix Explicit Euler: x_1 = x_0 + helix(h)
|
|
// with helix(h) being a helix piece of length h.
|
|
// A simple approach for solving linear differential equations.
|
|
// Take the current derivative and add it to the current position.
|
|
|
|
// Author: W.Wander <wwc@mit.edu>, 12.09.1997
|
|
// -------------------------------------------------------------------
|
|
#ifndef G4HELIXEXPLICITEULER_HH
|
|
#define G4HELIXEXPLICITEULER_HH
|
|
|
|
#include "G4MagHelicalStepper.hh"
|
|
|
|
class G4HelixExplicitEuler : public G4MagHelicalStepper
|
|
{
|
|
public: // with description
|
|
|
|
G4HelixExplicitEuler(G4Mag_EqRhs* EqRhs);
|
|
~G4HelixExplicitEuler();
|
|
|
|
void Stepper( const G4double y[],
|
|
const G4double*,
|
|
G4double h,
|
|
G4double yout[],
|
|
G4double yerr[] );
|
|
|
|
void DumbStepper( const G4double y[],
|
|
G4ThreeVector Bfld,
|
|
G4double h,
|
|
G4double yout[]);
|
|
|
|
G4double DistChord() const;
|
|
|
|
public: // without description
|
|
|
|
inline G4int IntegratorOrder() const { return 1; }
|
|
};
|
|
|
|
#endif
|