Gabriele Cosmo
147 lines
5.5 KiB
Plaintext
147 lines
5.5 KiB
Plaintext
//
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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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//
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// $Id: G4DNATotalCrossSectionFromFilePolicy.icc,v 1.4 2006/06/29 19:35:29 gunter Exp $
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// GEANT4 tag $Name: geant4-08-01 $
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//
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#ifdef G4DNATOTALCROSSSECTIONFROMFILEPOLICY_HH
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#include "G4Electron.hh"
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#include "Randomize.hh"
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template <typename IncomingParticlePolicy, typename DataFilePolicy, typename InterpolationAlgorithmPolicy>
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G4DNATotalCrossSectionFromFilePolicy<IncomingParticlePolicy, DataFilePolicy, InterpolationAlgorithmPolicy> :: G4DNATotalCrossSectionFromFilePolicy()
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:
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dataset(0),
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valuesBuffer(0)
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{
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}
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template <typename IncomingParticlePolicy, typename DataFilePolicy, typename InterpolationAlgorithmPolicy>
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G4DNATotalCrossSectionFromFilePolicy<IncomingParticlePolicy, DataFilePolicy, InterpolationAlgorithmPolicy> :: ~G4DNATotalCrossSectionFromFilePolicy()
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{
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Free();
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}
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template <typename IncomingParticlePolicy, typename DataFilePolicy, typename InterpolationAlgorithmPolicy>
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G4double G4DNATotalCrossSectionFromFilePolicy<IncomingParticlePolicy, DataFilePolicy, InterpolationAlgorithmPolicy> :: TotalCrossSection(G4double k, G4int /* z */) const
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{
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if (!dataset)
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{
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G4Exception("G4DNATotalCrossSectionFromFilePolicy<>::TotalCrossSection: dataset not loaded");
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return 0;
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}
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if (k < dataFilePolicy.lowEnergyLimit)
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{
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if (dataFilePolicy.zeroBelowLowEnergyLimit)
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return 0;
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k=dataFilePolicy.lowEnergyLimit;
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}
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else if (k > dataFilePolicy.highEnergyLimit)
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{
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if (dataFilePolicy.zeroAboveHighEnergyLimit)
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return 0;
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k=dataFilePolicy.highEnergyLimit;
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}
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return dataset->FindValue(k);
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}
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template <typename IncomingParticlePolicy, typename DataFilePolicy, typename InterpolationAlgorithmPolicy>
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G4int G4DNATotalCrossSectionFromFilePolicy<IncomingParticlePolicy, DataFilePolicy, InterpolationAlgorithmPolicy> :: RandomizePartialCrossSection(G4double k, G4int /* z */)
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{
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if (!dataset)
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{
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G4Exception("G4DNATotalCrossSectionFromFilePolicy<>::RandomizePartialCrossSection: dataset not loaded");
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return 0;
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}
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const size_t n(dataset->NumberOfComponents());
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size_t i(n);
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G4double value(0);
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while (i>0)
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{
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i--;
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valuesBuffer[i]=dataset->GetComponent(i)->FindValue(k);
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value+=valuesBuffer[i];
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}
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value*=G4UniformRand();
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i=n;
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while (i>0)
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{
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i--;
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if (valuesBuffer[i]>value)
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return i;
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value-=valuesBuffer[i];
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}
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return 0;
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}
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template <typename IncomingParticlePolicy, typename DataFilePolicy, typename InterpolationAlgorithmPolicy>
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G4int G4DNATotalCrossSectionFromFilePolicy<IncomingParticlePolicy, DataFilePolicy, InterpolationAlgorithmPolicy> :: NumberOfPartialCrossSections(void)
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{
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if (!dataset)
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{
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G4Exception("G4DNATotalCrossSectionFromFilePolicy<>::NumberOfPartialCrossSections: dataset not loaded");
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return 0;
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}
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return dataset->NumberOfComponents();
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}
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template <typename IncomingParticlePolicy, typename DataFilePolicy, typename InterpolationAlgorithmPolicy>
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void G4DNATotalCrossSectionFromFilePolicy<IncomingParticlePolicy, DataFilePolicy, InterpolationAlgorithmPolicy> :: BuildTotalCrossSection(void)
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{
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Free();
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dataset=new G4DNACrossSectionDataSet(new InterpolationAlgorithmPolicy, dataFilePolicy.dataFileEnergyUnit, dataFilePolicy.dataFileCrossSectionUnit);
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dataset->LoadData(dataFilePolicy.dataFileName);
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valuesBuffer=new G4double[dataset->NumberOfComponents()];
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}
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template <typename IncomingParticlePolicy, typename DataFilePolicy, typename InterpolationAlgorithmPolicy>
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void G4DNATotalCrossSectionFromFilePolicy<IncomingParticlePolicy, DataFilePolicy, InterpolationAlgorithmPolicy> :: Free(void)
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{
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if (dataset)
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delete dataset;
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if (valuesBuffer)
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delete[] valuesBuffer;
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}
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#endif /* G4DNATOTALCROSSSECTIONFROMFILEPOLICY_HH */
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