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G4HelixExplicitEuler.hh
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//
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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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// G4HelixExplicitEuler
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//
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// Class description:
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//
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// Helix Explicit Euler: x_1 = x_0 + helix(h)
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// with helix(h) being a helix piece of length h.
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// A simple approach for solving linear differential equations.
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// Take the current derivative and add it to the current position.
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// Author: W.Wander <wwc@mit.edu>, 12.09.1997
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// -------------------------------------------------------------------
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#ifndef G4HELIXEXPLICITEULER_HH
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#define G4HELIXEXPLICITEULER_HH
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#include "
G4MagHelicalStepper.hh
"
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class
G4HelixExplicitEuler
:
public
G4MagHelicalStepper
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{
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public
:
// with description
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G4HelixExplicitEuler
(
G4Mag_EqRhs
* EqRhs);
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~G4HelixExplicitEuler
();
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void
Stepper
(
const
G4double
y
[],
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const
G4double
*,
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G4double
h
,
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G4double
yout[],
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G4double
yerr[] );
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void
DumbStepper
(
const
G4double
y[],
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G4ThreeVector
Bfld,
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G4double
h,
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G4double
yout[]);
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G4double
DistChord
()
const
;
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public
:
// without description
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inline
G4int
IntegratorOrder
()
const
{
return
1; }
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};
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#endif
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G4HelixExplicitEuler.hh
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