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25 // 22 //
26 // G4GaussJacobiQ << 23 //
>> 24 // $Id: G4GaussJacobiQ.hh,v 1.4 2001/07/11 10:00:39 gunter Exp $
>> 25 // GEANT4 tag $Name: geant4-04-00 $
27 // 26 //
28 // Class description: 27 // Class description:
29 // 28 //
30 // Roots of ortogonal polynoms and correspondi 29 // Roots of ortogonal polynoms and corresponding weights are calculated based on
31 // iteration method (by bisection Newton algor 30 // iteration method (by bisection Newton algorithm). Constant values for initial
32 // approximations were derived from the book: << 31 // approximations were derived from the book: M. Abramowitz, I. Stegun, Handbook
33 // M. Abramowitz, I. Stegun, Handbook of mat << 32 // of mathematical functions, DOVER Publications INC, New York 1965 ; chapters 9,
34 // DOVER Publications INC, New York 1965 ; c << 33 // 10, and 22 .
>> 34 //
>> 35 // ---------------------------------------------------------------------------
>> 36 //
>> 37 // Constructor for Gauss-Jacobi integration method.
>> 38 //
>> 39 // G4GaussJacobiQ( function pFunction,
>> 40 // G4double alpha,
>> 41 // G4double beta,
>> 42 // G4int nJacobi )
>> 43 //
>> 44 // ----------------------------------------------------------------------------
>> 45 //
>> 46 // Gauss-Jacobi method for integration of ((1-x)^alpha)*((1+x)^beta)*pFunction(x)
>> 47 // from minus unit to plus unit .
>> 48 //
>> 49 // G4double Integral() const
>> 50
>> 51 // ------------------------------- HISTORY -------------------------------------
>> 52 //
>> 53 // 13.05.97 V.Grichine (Vladimir.Grichine@cern.chz0
35 54
36 // Author: V.Grichine, 13.05.1997 <<
37 // ------------------------------------------- <<
38 #ifndef G4GAUSSJACOBIQ_HH 55 #ifndef G4GAUSSJACOBIQ_HH
39 #define G4GAUSSJACOBIQ_HH 1 << 56 #define G4GAUSSJACOBIQ_HH
40 57
41 #include "G4VGaussianQuadrature.hh" 58 #include "G4VGaussianQuadrature.hh"
42 59
43 class G4GaussJacobiQ : public G4VGaussianQuadr 60 class G4GaussJacobiQ : public G4VGaussianQuadrature
44 { 61 {
45 public: << 62 public:
46 G4GaussJacobiQ(function pFunction, G4double << 63 // Constructor
47 G4int nJacobi); << 64
48 // Constructor for Gauss-Jacobi integration << 65 G4GaussJacobiQ( function pFunction,
49 << 66 G4double alpha,
50 G4GaussJacobiQ(const G4GaussJacobiQ&) = dele << 67 G4double beta,
51 G4GaussJacobiQ& operator=(const G4GaussJacob << 68 G4int nJacobi ) ;
52 << 69
53 G4double Integral() const; << 70 // Methods
54 // Gauss-Jacobi method for integration of << 71
55 // ((1-x)^alpha)*((1+x)^beta)*pFunction(x) f << 72 G4double Integral() const ;
>> 73
>> 74 private:
>> 75
>> 76 G4GaussJacobiQ(const G4GaussJacobiQ&);
>> 77 G4GaussJacobiQ& operator=(const G4GaussJacobiQ&);
56 }; 78 };
57 79
58 #endif 80 #endif
59 81