| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | // neutron_hp -- source file
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| 27 | // J.P. Wellisch, Nov-1996
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| 28 | // A prototype of the low energy neutron transport model.
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| 29 | //
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| 30 | #include "G4NeutronHPArbitaryTab.hh"
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| 31 | #include "G4ios.hh"
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| 32 |
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| 33 | G4double G4NeutronHPArbitaryTab::Sample(G4double anEnergy)
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| 34 | {
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| 35 | G4int i;
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| 36 | for(i=0;i<nDistFunc;i++)
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| 37 | {
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| 38 | if(anEnergy<theDistFunc[i].GetLabel()) break; // that is the energy we need
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| 39 | }
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| 40 | G4int low(0), high(0);
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| 41 | if(i==nDistFunc)
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| 42 | {
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| 43 | low = i-2;
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| 44 | high = i-1;
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| 45 | }
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| 46 | else if(i==0)
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| 47 | {
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| 48 | if(nDistFunc==0)
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| 49 | {
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| 50 | G4cerr << "No distribution functions to sample "
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| 51 | << "from in G4NeutronHPArbitaryTab::Sample"<<G4endl;
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| 52 | throw G4HadronicException(__FILE__, __LINE__, "nDistFunc==0");
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| 53 | }
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| 54 | else
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| 55 | {
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| 56 | return theDistFunc[0].Sample();
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| 57 | }
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| 58 | }
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| 59 | else
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| 60 | {
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| 61 | low = i-1;
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| 62 | high = i;
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| 63 | }
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| 64 | theBuffer.Merge(theManager.GetScheme(low), anEnergy,
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| 65 | theDistFunc+low, theDistFunc+high);
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| 66 | return theBuffer.Sample();
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| 67 | }
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