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G4MagErrorStepper.hh
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4MagErrorStepper.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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// G4MagErrorStepper
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//
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// Class description:
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//
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// Abstract base class for integrator of particle's equation of motion,
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// used in tracking in space dependent magnetic field.
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// Author: W.Wander <wwc@mit.edu>, 09.12.1997
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// --------------------------------------------------------------------
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#ifndef G4MAGERRORSTEPPER_HH
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#define G4MAGERRORSTEPPER_HH
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#include "
G4Types.hh
"
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#include "
G4MagIntegratorStepper.hh
"
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#include "
G4Mag_EqRhs.hh
"
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#include "
G4ThreeVector.hh
"
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class
G4MagErrorStepper
:
public
G4MagIntegratorStepper
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{
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public
:
// with description
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G4MagErrorStepper
(
G4EquationOfMotion
*EqRhs,
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G4int
numberOfVariables,
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G4int
numStateVariables = 12);
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virtual
~G4MagErrorStepper
();
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G4MagErrorStepper
(
const
G4MagErrorStepper
&) =
delete
;
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G4MagErrorStepper
&
operator=
(
const
G4MagErrorStepper
&) =
delete
;
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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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// The stepper for the Runge Kutta integration. The stepsize
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// is fixed, with the Step size given by h.
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// Integrates ODE starting values y[0 to 6].
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// Outputs yout[] and its estimated error yerr[].
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virtual
void
DumbStepper
(
const
G4double
y[],
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const
G4double
dydx[],
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G4double
h,
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G4double
yout[] ) = 0;
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// Performs a 'dump' Step without error calculation.
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G4double
DistChord
()
const
;
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private
:
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// STATE
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G4ThreeVector
fInitialPoint
,
fMidPoint
,
fFinalPoint
;
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// Data stored in order to find the chord
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// Dependent Objects, owned --- part of the STATE
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G4double
*
yInitial
, *
yMiddle
, *
dydxMid
, *
yOneStep
;
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// The following arrays are used only for temporary storage
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// they are allocated at the class level only for efficiency -
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// so that calls to new and delete are not made in Stepper().
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};
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#include "G4MagErrorStepper.icc"
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#endif
geant4
tree
geant4-10.6-release
source
geometry
magneticfield
include
G4MagErrorStepper.hh
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:16
using
1.8.2 with
ECCE GitHub integration