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G4GaussJacobiQ.hh
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27 // $Id: G4GaussJacobiQ.hh 67970 2013-03-13 10:10:06Z gcosmo $
28 //
29 // Class description:
30 //
31 // Roots of ortogonal polynoms and corresponding weights are calculated based on
32 // iteration method (by bisection Newton algorithm). Constant values for initial
33 // approximations were derived from the book: M. Abramowitz, I. Stegun, Handbook
34 // of mathematical functions, DOVER Publications INC, New York 1965 ; chapters 9,
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
56 
57 #ifndef G4GAUSSJACOBIQ_HH
58 #define G4GAUSSJACOBIQ_HH
59 
60 #include "G4VGaussianQuadrature.hh"
61 
63 {
64 public:
65  // Constructor
66 
67  G4GaussJacobiQ( function pFunction,
69  G4double beta,
70  G4int nJacobi ) ;
71 
72  // Methods
73 
74  G4double Integral() const ;
75 
76 private:
77 
79  G4GaussJacobiQ& operator=(const G4GaussJacobiQ&);
80 };
81 
82 #endif
int G4int
Definition: G4Types.hh:78
G4GaussJacobiQ(function pFunction, G4double alpha, G4double beta, G4int nJacobi)
G4double Integral() const
double G4double
Definition: G4Types.hh:76
static const G4double alpha