Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/advanced/eRosita/physics/src/G4RDLinInterpolation.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
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  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
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  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 //
 27 //
 28 // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
 29 //
 30 // History:
 31 // -----------
 32 // 31 Jul 2001   MGP        Created
 33 //
 34 // -------------------------------------------------------------------
 35 
 36 #include "G4RDLinInterpolation.hh"
 37 
 38 // Constructor
 39 
 40 G4RDLinInterpolation::G4RDLinInterpolation()
 41 { }
 42 
 43 // Destructor
 44 
 45 G4RDLinInterpolation::~G4RDLinInterpolation()
 46 { }
 47 
 48 
 49 G4RDVDataSetAlgorithm* G4RDLinInterpolation::Clone() const 
 50 { return new G4RDLinInterpolation; }
 51 
 52 G4double G4RDLinInterpolation::Calculate(G4double x, G4int bin, 
 53                const G4DataVector& points, 
 54                const G4DataVector& data) const
 55 {
 56   G4int nBins = data.size() - 1;
 57   G4double value = 0.;
 58   if (x < points[0])
 59     {
 60       value = 0.;
 61     }
 62   else if (bin < nBins)
 63     {
 64       G4double e1 = points[bin];
 65       G4double e2 = points[bin+1];
 66       G4double d1 = data[bin];
 67       G4double d2 = data[bin+1];
 68       value = d1 + (d2 - d1)*(x - e1)/(e2 - e1);
 69     }
 70   else
 71     {
 72       value = data[nBins];
 73     }
 74   return value;
 75 }
 76