00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id$ 00028 // 00029 #ifndef G4NeutronHPPolynomExpansion_h 00030 #define G4NeutronHPPolynomExpansion_h 1 00031 00032 #include <fstream> 00033 #include <CLHEP/Units/SystemOfUnits.h> 00034 00035 #include "globals.hh" 00036 #include "G4ios.hh" 00037 00038 class G4NeutronHPPolynomExpansion 00039 { 00040 public: 00041 G4NeutronHPPolynomExpansion() 00042 { 00043 theCoeff = 0; 00044 nPoly=0; 00045 } 00046 ~G4NeutronHPPolynomExpansion() 00047 { 00048 if(theCoeff!=0) delete [] theCoeff; 00049 } 00050 00051 inline void Init(std::ifstream & theData) 00052 { 00053 theData >> nPoly; 00054 theCoeff = new G4double[nPoly]; 00055 G4int i; 00056 for(i=0;i<nPoly;i++) 00057 { 00058 theData >> theCoeff[i]; 00059 } 00060 } 00061 00062 inline G4double GetValue(G4double anEnergy) 00063 { 00064 G4int i; 00065 G4double result=0; 00066 G4double base = anEnergy/CLHEP::eV; 00067 G4double running = 1; 00068 for(i=0; i<nPoly; i++) 00069 { 00070 result+=theCoeff[i]*running; 00071 running *= base; 00072 } 00073 return result; 00074 } 00075 private: 00076 00077 G4int nPoly; 00078 G4double * theCoeff; 00079 }; 00080 00081 #endif