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>> 2 // the GEANT4 collaboration.
1 // 3 //
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18 // * This code implementation is the result <<
19 // * technical work of the GEANT4 collaboratio <<
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25 // 7 //
26 // G4GaussJacobiQ << 8 // $Id: G4GaussJacobiQ.hh,v 1.2 1999/11/16 17:30:57 gcosmo Exp $
>> 9 // GEANT4 tag $Name: geant4-02-00 $
27 // 10 //
28 // Class description: 11 // Class description:
29 // 12 //
30 // Roots of ortogonal polynoms and correspondi 13 // Roots of ortogonal polynoms and corresponding weights are calculated based on
31 // iteration method (by bisection Newton algor 14 // iteration method (by bisection Newton algorithm). Constant values for initial
32 // approximations were derived from the book: << 15 // approximations were derived from the book: M. Abramowitz, I. Stegun, Handbook
33 // M. Abramowitz, I. Stegun, Handbook of mat << 16 // of mathematical functions, DOVER Publications INC, New York 1965 ; chapters 9,
34 // DOVER Publications INC, New York 1965 ; c << 17 // 10, and 22 .
>> 18 //
>> 19 // ---------------------------------------------------------------------------
>> 20 //
>> 21 // Constructor for Gauss-Jacobi integration method.
>> 22 //
>> 23 // G4GaussJacobiQ( function pFunction,
>> 24 // G4double alpha,
>> 25 // G4double beta,
>> 26 // G4int nJacobi )
>> 27 //
>> 28 // ----------------------------------------------------------------------------
>> 29 //
>> 30 // Gauss-Jacobi method for integration of ((1-x)^alpha)*((1+x)^beta)*pFunction(x)
>> 31 // from minus unit to plus unit .
>> 32 //
>> 33 // G4double Integral() const
>> 34
>> 35 // ------------------------------- HISTORY -------------------------------------
>> 36 //
>> 37 // 13.05.97 V.Grichine (Vladimir.Grichine@cern.chz0
35 38
36 // Author: V.Grichine, 13.05.1997 <<
37 // ------------------------------------------- <<
38 #ifndef G4GAUSSJACOBIQ_HH 39 #ifndef G4GAUSSJACOBIQ_HH
39 #define G4GAUSSJACOBIQ_HH 1 << 40 #define G4GAUSSJACOBIQ_HH
40 41
41 #include "G4VGaussianQuadrature.hh" 42 #include "G4VGaussianQuadrature.hh"
42 43
43 class G4GaussJacobiQ : public G4VGaussianQuadr 44 class G4GaussJacobiQ : public G4VGaussianQuadrature
44 { 45 {
45 public: << 46 public:
46 G4GaussJacobiQ(function pFunction, G4double << 47 // Constructor
47 G4int nJacobi); << 48
48 // Constructor for Gauss-Jacobi integration << 49 G4GaussJacobiQ( function pFunction,
49 << 50 G4double alpha,
50 G4GaussJacobiQ(const G4GaussJacobiQ&) = dele << 51 G4double beta,
51 G4GaussJacobiQ& operator=(const G4GaussJacob << 52 G4int nJacobi ) ;
52 << 53
53 G4double Integral() const; << 54 // Methods
54 // Gauss-Jacobi method for integration of << 55
55 // ((1-x)^alpha)*((1+x)^beta)*pFunction(x) f << 56 G4double Integral() const ;
56 }; << 57
>> 58
>> 59 protected:
>> 60
>> 61 private:
>> 62
>> 63 } ;
>> 64
57 65
58 #endif 66 #endif
59 67