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25 // 22 //
26 // G4GaussHermiteQ << 23 //
>> 24 // $Id: G4GaussHermiteQ.hh,v 1.3.4.1 2001/06/28 19:09:51 gunter Exp $
>> 25 // GEANT4 tag $Name: $
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-Hermite quadrature method . The function GaussHermite
>> 38 // should be called then
>> 39 //
>> 40 // G4GaussHermiteQ( function pFunction, G4int nHermite )
>> 41 //
>> 42 // ----------------------------------------------------------------------------
>> 43 //
>> 44 // Gauss-Hermite method for integration of exp(-x*x)*nFunction(x) from minus infinity
>> 45 // to plus infinity .
>> 46 //
>> 47 // G4double Integral() const
>> 48
>> 49 // ------------------------------- HISTORY -------------------------------------
>> 50 //
>> 51 // 13.05.97 V.Grichine (Vladimir.Grichine@cern.chz0
35 52
36 // Author: V.Grichine, 13.05.1997 V.Grichine <<
37 // ------------------------------------------- <<
38 #ifndef G4GAUSSHERMITEQ_HH 53 #ifndef G4GAUSSHERMITEQ_HH
39 #define G4GAUSSHERMITEQ_HH 1 << 54 #define G4GAUSSHERMITEQ_HH
40 55
41 #include "G4VGaussianQuadrature.hh" 56 #include "G4VGaussianQuadrature.hh"
42 57
43 class G4GaussHermiteQ : public G4VGaussianQuad 58 class G4GaussHermiteQ : public G4VGaussianQuadrature
44 { 59 {
45 public: << 60 public:
46 // Constructor << 61 // Constructor
>> 62
>> 63 G4GaussHermiteQ( function pFunction, G4int nHermite ) ;
>> 64
>> 65 // Methods
>> 66
>> 67 G4double Integral() const ;
>> 68
>> 69
>> 70 private:
>> 71
>> 72 G4GaussHermiteQ(const G4GaussHermiteQ&);
>> 73 G4GaussHermiteQ& operator=(const G4GaussHermiteQ&);
47 74
48 G4GaussHermiteQ(function pFunction, G4int nH <<
49 // Constructor for Gauss-Hermite quadrature <<
50 // The function GaussHermite should be calle <<
51 <<
52 G4GaussHermiteQ(const G4GaussHermiteQ&) = de <<
53 G4GaussHermiteQ& operator=(const G4GaussHerm <<
54 <<
55 G4double Integral() const; <<
56 // Gauss-Hermite method for integration of s <<
57 // minus infinity to plus infinity. <<
58 }; 75 };
59 76
60 #endif 77 #endif
61 78