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25 // 25 //
26 // G4GaussJacobiQ << 26 //
>> 27 // $Id$
27 // 28 //
28 // Class description: 29 // Class description:
29 // 30 //
30 // Roots of ortogonal polynoms and correspondi 31 // Roots of ortogonal polynoms and corresponding weights are calculated based on
31 // iteration method (by bisection Newton algor 32 // iteration method (by bisection Newton algorithm). Constant values for initial
32 // approximations were derived from the book: << 33 // approximations were derived from the book: M. Abramowitz, I. Stegun, Handbook
33 // M. Abramowitz, I. Stegun, Handbook of mat << 34 // of mathematical functions, DOVER Publications INC, New York 1965 ; chapters 9,
34 // DOVER Publications INC, New York 1965 ; c << 35 // 10, and 22 .
>> 36 //
>> 37 // ---------------------------------------------------------------------------
>> 38 //
>> 39 // Constructor for Gauss-Jacobi integration method.
>> 40 //
>> 41 // G4GaussJacobiQ( function pFunction,
>> 42 // G4double alpha,
>> 43 // G4double beta,
>> 44 // G4int nJacobi )
>> 45 //
>> 46 // ----------------------------------------------------------------------------
>> 47 //
>> 48 // Gauss-Jacobi method for integration of ((1-x)^alpha)*((1+x)^beta)*pFunction(x)
>> 49 // from minus unit to plus unit .
>> 50 //
>> 51 // G4double Integral() const
>> 52
>> 53 // ------------------------------- HISTORY -------------------------------------
>> 54 //
>> 55 // 13.05.97 V.Grichine (Vladimir.Grichine@cern.chz0
35 56
36 // Author: V.Grichine, 13.05.1997 <<
37 // ------------------------------------------- <<
38 #ifndef G4GAUSSJACOBIQ_HH 57 #ifndef G4GAUSSJACOBIQ_HH
39 #define G4GAUSSJACOBIQ_HH 1 << 58 #define G4GAUSSJACOBIQ_HH
40 59
41 #include "G4VGaussianQuadrature.hh" 60 #include "G4VGaussianQuadrature.hh"
42 61
43 class G4GaussJacobiQ : public G4VGaussianQuadr 62 class G4GaussJacobiQ : public G4VGaussianQuadrature
44 { 63 {
45 public: << 64 public:
46 G4GaussJacobiQ(function pFunction, G4double << 65 // Constructor
47 G4int nJacobi); << 66
48 // Constructor for Gauss-Jacobi integration << 67 G4GaussJacobiQ( function pFunction,
49 << 68 G4double alpha,
50 G4GaussJacobiQ(const G4GaussJacobiQ&) = dele << 69 G4double beta,
51 G4GaussJacobiQ& operator=(const G4GaussJacob << 70 G4int nJacobi ) ;
52 << 71
53 G4double Integral() const; << 72 // Methods
54 // Gauss-Jacobi method for integration of << 73
55 // ((1-x)^alpha)*((1+x)^beta)*pFunction(x) f << 74 G4double Integral() const ;
>> 75
>> 76 private:
>> 77
>> 78 G4GaussJacobiQ(const G4GaussJacobiQ&);
>> 79 G4GaussJacobiQ& operator=(const G4GaussJacobiQ&);
56 }; 80 };
57 81
58 #endif 82 #endif
59 83