G4ErrorMag_UsualEqRhs.hh

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// $Id: G4ErrorMag_UsualEqRhs.hh 66356 2012-12-18 09:02:32Z gcosmo $
//
//
// --------------------------------------------------------------------
//      GEANT 4 class header file 
// --------------------------------------------------------------------
//
// Class description:
//
// Serves to reverse the magnetic field when propagation is backwards
// for error propagation.

// History:
// - Created. P. Arce, September 2004
// --------------------------------------------------------------------

#ifndef G4ErrorMag_UsualEqRhs_hh
#define G4ErrorMag_UsualEqRhs_hh

#include "G4Mag_UsualEqRhs.hh"
#include "G4MagneticField.hh"

class G4ErrorMag_UsualEqRhs : public G4Mag_UsualEqRhs
{
   public:  // with description

     G4ErrorMag_UsualEqRhs( G4MagneticField* MagField );
    ~G4ErrorMag_UsualEqRhs();

     void EvaluateRhsGivenB( const G4double y[],
                             const G4double B[3],
                                   G4double dydx[] ) const;
       // Reverses dedx if propagation is backwards
};

#endif /* G4MAG_USUAL_EQRHS */