Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/electromagnetic/pii/src/G4LinInterpolator.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  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 // 31 Jul 2008   MGP        Revised and renamed to G4LinInterpolator
 34 //
 35 // -------------------------------------------------------------------
 36 
 37 #include "G4LinInterpolator.hh"
 38 
 39 // Constructor
 40 
 41 G4LinInterpolator::G4LinInterpolator()
 42 { }
 43 
 44 // Destructor
 45 
 46 G4LinInterpolator::~G4LinInterpolator()
 47 { }
 48 
 49 
 50 G4IInterpolator* G4LinInterpolator::Clone() const 
 51 { return new G4LinInterpolator; }
 52 
 53 G4double G4LinInterpolator::Calculate(G4double x, G4int bin, 
 54               const G4DataVector& points, 
 55               const G4DataVector& data) const
 56 {
 57   G4int nBins = G4int(data.size() - 1);
 58   G4double value = 0.;
 59   if (x < points[0])
 60     {
 61       value = 0.;
 62     }
 63   else if (bin < nBins)
 64     {
 65       G4double e1 = points[bin];
 66       G4double e2 = points[bin+1];
 67       G4double d1 = data[bin];
 68       G4double d2 = data[bin+1];
 69       value = d1 + (d2 - d1)*(x - e1)/(e2 - e1);
 70     }
 71   else
 72     {
 73       value = data[nBins];
 74     }
 75   return value;
 76 }
 77