Gabriele Cosmo
194 lines
4.9 KiB
C++
194 lines
4.9 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4LowEnergyUtilities.hh,v 1.6 2000/11/03 10:29:51 pia Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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// CERN Geneva Switzerland
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//
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// For information related to this code contact:
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// CERN, CN Division, ASD group
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// ------------ G4LowEnergyPhotoElectric physics process ------
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// by A.Forti 1999/06/28
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//
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// Class description:
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// Class for the handling of the data libraries
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// Further documentation available from http://www.ge.infn.it/geant4/lowE
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// ************************************************************
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#ifndef G4LowEnergyUtilities_h
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#define G4LowEnergyUtilities_h 1
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//#include "G4FirstLevel.hh"
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//#include "G4SecondLevel.hh"
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#include "G4ThirdLevel.hh"
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#include "G4PhysicsVector.hh"
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#include "G4PhysicsTable.hh"
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typedef G4FirstLevel oneShellTable;
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typedef G4SecondLevel oneAtomTable;
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typedef G4ThirdLevel allAtomTable;
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class G4LowEnergyUtilities
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{
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public:
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G4LowEnergyUtilities();
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~G4LowEnergyUtilities();
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G4FirstLevel* BuildFirstLevelTables(const G4int, const G4int, const char*);
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G4SecondLevel* BuildSecondLevelTables(const G4int, const G4int, const char*);
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//inline functions
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G4int FindBinLocation(const G4double BinValue, const G4Data& arg);
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G4int FindBinLocation(const G4double, const G4PhysicsVector*);
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G4double DataLogInterpolation(const G4double,
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const G4Data&,
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const G4Data&);
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G4double DataLogInterpolation(const G4double Argument,
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const G4double AtomicNumber,
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const G4PhysicsTable* Table);
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G4double DataSemiLogInterpolation(const G4double,
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const G4Data&,
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const G4Data&);
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};
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inline G4int G4LowEnergyUtilities::FindBinLocation(const G4double arg, const G4Data& vec){
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G4int numberOfBin = vec.length();
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G4int lowerBound = 0;
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G4int upperBound = numberOfBin-1;
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do {
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G4int midBin = (lowerBound + upperBound)/2;
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if( arg < vec[midBin] )
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upperBound = midBin-1;
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else
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lowerBound = midBin+1;
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} while (lowerBound <= upperBound);
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return upperBound;
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}
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inline G4double G4LowEnergyUtilities::DataLogInterpolation(const G4double Argument,
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const G4Data& argVec,
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const G4Data& valVec){
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G4int theLoc = FindBinLocation(Argument, argVec);
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if(theLoc == argVec.length()-1){
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return valVec[theLoc];
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}
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G4double val1 = valVec[theLoc], val2 = valVec[theLoc+1];
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G4double arg1 = argVec[theLoc], arg2 = argVec[theLoc+1];
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if(arg1 == 0.0) arg1 = 1e-17; if(val1 == 0.0) val1 = 1e-17;
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G4double theVal = (log10(val1)*log10(arg2/Argument)
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+log10(val2)*log10(Argument/arg1))/log10(arg2/arg1);
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theVal = pow(10,theVal);
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return theVal;
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}
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inline G4int G4LowEnergyUtilities::FindBinLocation(const G4double arg,
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const G4PhysicsVector* vec){
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if(!vec){
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G4Exception("G4LowEnergy: FindBinLocation: Vector Empty "
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"probably the program hasn't found data files or data files are empty");
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}
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G4int numberOfBin = vec->GetVectorLength();
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G4int lowerBound = 0;
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G4int upperBound = numberOfBin-1;
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do {
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G4int midBin = (lowerBound + upperBound)/2;
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if( arg < vec->GetLowEdgeEnergy(midBin) )
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upperBound = midBin-1;
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else
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lowerBound = midBin+1;
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} while (lowerBound <= upperBound);
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return upperBound;
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}
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inline G4double G4LowEnergyUtilities::DataLogInterpolation(const G4double Argument,
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const G4double TableIndex,
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const G4PhysicsTable* Table){
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G4PhysicsVector* theVec = 0;
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theVec = (*Table)(TableIndex);
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G4int theLoc = FindBinLocation(Argument, theVec);
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G4double val1 = (*theVec)(theLoc), val2 = (*theVec)(theLoc+1);
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G4double arg1 = theVec->GetLowEdgeEnergy(theLoc), arg2 = theVec->GetLowEdgeEnergy(theLoc+1);
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G4double theVal = (log10(val1)*log10(arg2/Argument)
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+log10(val2)*log10(Argument/arg1))/log10(arg2/arg1);
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theVal = pow(10,theVal);
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return theVal;
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}
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inline G4double G4LowEnergyUtilities::DataSemiLogInterpolation(const G4double Argument,
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const G4Data& argVec,
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const G4Data& valVec){
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G4int theLoc = FindBinLocation(Argument, argVec);
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if(theLoc == argVec.length()-1){
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return valVec[theLoc];
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}
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G4double val1 = valVec[theLoc], val2 = valVec[theLoc+1];
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G4double arg1 = argVec[theLoc], arg2 = argVec[theLoc+1];
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G4double theVal = (val1*log10(arg2/Argument)
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+val2*log10(Argument/arg1))/log10(arg2/arg1);
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return theVal;
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}
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#endif
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