Gabriele Cosmo
74 lines
2.9 KiB
C++
74 lines
2.9 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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// G4ErrorMag_UsualEqRhs
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//
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// Class description:
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//
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// Serves to reverse the magnetic field when propagation is backwards
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// for error propagation.
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// Author: Pedro Arce (CIEMAT), September 2004.
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// --------------------------------------------------------------------
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#ifndef G4ERRORMAG_USUALEQRHS_HH
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#define G4ERRORMAG_USUALEQRHS_HH
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#include "G4Mag_UsualEqRhs.hh"
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#include "G4MagneticField.hh"
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/**
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* @brief G4ErrorMag_UsualEqRhs serves to reverse the magnetic field when
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* propagation is backwards. It is used for error propagation.
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*/
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class G4ErrorMag_UsualEqRhs : public G4Mag_UsualEqRhs
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{
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public:
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/**
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* Constructor for G4ErrorMag_UsualEqRhs.
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* @param[in] MagField Pointer to the magnetic field.
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*/
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G4ErrorMag_UsualEqRhs( G4MagneticField* MagField );
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/**
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* Default Destructor.
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*/
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~G4ErrorMag_UsualEqRhs() override = default;
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/**
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* Calculates the value of the derivative, given the value of the
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* magnetic field. Reverses dedx if propagation is backwards.
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* @param[in] y Coefficients array.
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* @param[in] B Field value.
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* @param[out] dydx Derivatives array.
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*/
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void EvaluateRhsGivenB( const G4double y[],
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const G4double B[3],
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G4double dydx[] ) const override;
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};
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#endif
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