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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4NeutronHPPolynomExpansion.hh,v 1.11 2007/06/06 12:45:13 ahoward Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | #ifndef G4NeutronHPPolynomExpansion_h |
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31 | #define G4NeutronHPPolynomExpansion_h 1 |
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32 | |
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33 | #include "globals.hh" |
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34 | #include "G4ios.hh" |
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35 | #include <fstream> |
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36 | |
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37 | class G4NeutronHPPolynomExpansion |
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38 | { |
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39 | public: |
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40 | G4NeutronHPPolynomExpansion() |
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41 | { |
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42 | theCoeff = 0; |
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43 | nPoly=0; |
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44 | } |
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45 | ~G4NeutronHPPolynomExpansion() |
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46 | { |
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47 | if(theCoeff!=0) delete [] theCoeff; |
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48 | } |
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49 | |
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50 | inline void Init(std::ifstream & theData) |
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51 | { |
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52 | theData >> nPoly; |
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53 | theCoeff = new G4double[nPoly]; |
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54 | G4int i; |
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55 | for(i=0;i<nPoly;i++) |
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56 | { |
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57 | theData >> theCoeff[i]; |
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58 | } |
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59 | } |
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60 | |
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61 | inline G4double GetValue(G4double anEnergy) |
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62 | { |
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63 | G4int i; |
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64 | G4double result=0; |
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65 | G4double base = anEnergy/eV; |
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66 | G4double running = 1; |
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67 | for(i=0; i<nPoly; i++) |
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68 | { |
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69 | result+=theCoeff[i]*running; |
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70 | running *= base; |
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71 | } |
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72 | return result; |
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73 | } |
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74 | private: |
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75 | |
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76 | G4int nPoly; |
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77 | G4double * theCoeff; |
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78 | }; |
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79 | |
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80 | #endif |
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