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geant4/source/processes/hadronic/models/neutron_hp/include/G4NeutronHPPolynomExpansion.hh
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2016-06-09 15:37:50 +02:00

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// $Id: G4NeutronHPPolynomExpansion.hh,v 1.11 2007/06/06 12:45:13 ahoward Exp $
// GEANT4 tag $Name: geant4-09-01 $
//
#ifndef G4NeutronHPPolynomExpansion_h
#define G4NeutronHPPolynomExpansion_h 1
#include "globals.hh"
#include "G4ios.hh"
#include <fstream>
class G4NeutronHPPolynomExpansion
{
public:
G4NeutronHPPolynomExpansion()
{
theCoeff = 0;
nPoly=0;
}
~G4NeutronHPPolynomExpansion()
{
if(theCoeff!=0) delete [] theCoeff;
}
inline void Init(std::ifstream & theData)
{
theData >> nPoly;
theCoeff = new G4double[nPoly];
G4int i;
for(i=0;i<nPoly;i++)
{
theData >> theCoeff[i];
}
}
inline G4double GetValue(G4double anEnergy)
{
G4int i;
G4double result=0;
G4double base = anEnergy/eV;
G4double running = 1;
for(i=0; i<nPoly; i++)
{
result+=theCoeff[i]*running;
running *= base;
}
return result;
}
private:
G4int nPoly;
G4double * theCoeff;
};
#endif