lars/geant4
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Import Geant4 11.4.0 source tree

Browse Source
This commit is contained in:
Gabriele Cosmo
2025-12-05 08:54:02 +01:00
parent a499fb82e9
commit b4a16de652
6484 changed files with 232674 additions and 221097 deletions
Download Patch File Download Diff File Expand all files Collapse all files
source/geometry/magneticfield/include/G4MagErrorStepper.hh
+46 -16
View File
@@ -30,7 +30,7 @@
// Abstract base class for integrator of particle's equation of motion,
// used in tracking in space dependent magnetic field.
// Author: W.Wander <wwc@mit.edu>, 09.12.1997
// Author: W.Wander (MIT), 09.12.1997
// --------------------------------------------------------------------
#ifndef G4MAGERRORSTEPPER_HH
#define G4MAGERRORSTEPPER_HH
@@ -40,47 +40,77 @@
#include "G4Mag_EqRhs.hh"
#include "G4ThreeVector.hh"
/**
* @brief G4MagErrorStepper is an abstract base class for integrator of
* particle's equation of motion, used in tracking in space dependent
* magnetic field.
*/
class G4MagErrorStepper : public G4MagIntegratorStepper
{
public:
/**
* Constructor for G4MagErrorStepper.
* @param[in] EqRhs Pointer to the provided equation of motion.
* @param[in] numberOfVariables The number of integration variables.
* @param[in] numberOfVariables The number of state variables.
*/
G4MagErrorStepper(G4EquationOfMotion*EqRhs,
G4int numberOfVariables,
G4int numStateVariables = 12);
/**
* Destructor.
*/
~G4MagErrorStepper() override;
/**
* Copy constructor and assignment operator not allowed.
*/
G4MagErrorStepper(const G4MagErrorStepper&) = delete;
G4MagErrorStepper& operator=(const G4MagErrorStepper&) = delete;
/**
* The stepper for the Runge Kutta integration.
* The stepsize is fixed, with the step size given by 'h'.
* Integrates ODE starting values y[0 to 6].
* Outputs yout[] and its estimated error yerr[].
* @param[in] y Starting values array of integration variables.
* @param[in] dydx Derivatives array.
* @param[in] h The given step size.
* @param[out] yout Integration output.
* @param[out] yerr The estimated error.
*/
void Stepper( const G4double y[],
const G4double dydx[],
G4double h,
G4double yout[],
G4double yerr[] ) override;
// The stepper for the Runge Kutta integration. The stepsize
// is fixed, with the Step size given by h.
// Integrates ODE starting values y[0 to 6].
// Outputs yout[] and its estimated error yerr[].
virtual void DumbStepper( const G4double y[],
const G4double dydx[],
G4double h,
G4double yout[] ) = 0;
// Performs a 'dump' Step without error calculation.
/**
* Same as Stepper() function above, but should perform a 'dump' step
* without error calculation. To be implemented in concrete derived classes.
*/
virtual void DumbStepper( const G4double y[],
const G4double dydx[],
G4double h,
G4double yout[] ) = 0;
/**
* Estimates the maximum distance of curved solution and chord.
*/
G4double DistChord() const override;
private:
// STATE
/** Data stored in order to find the chord. */
G4ThreeVector fInitialPoint, fMidPoint, fFinalPoint;
// Data stored in order to find the chord
// Dependent Objects, owned --- part of the STATE
/** Arrays used only for temporary storage; they are allocated at the
class level only for efficiency, so that calls to new and delete are
not made in Stepper(). */
G4double *yInitial, *yMiddle, *dydxMid, *yOneStep;
// The following arrays are used only for temporary storage
// they are allocated at the class level only for efficiency -
// so that calls to new and delete are not made in Stepper().
};
#include "G4MagErrorStepper.icc"