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25 // 25 //
26 // G4GaussHermiteQ << 26 //
>> 27 // $Id: G4GaussHermiteQ.hh,v 1.6 2006/06/29 18:59:35 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-09-00 $
27 // 29 //
28 // Class description: 30 // Class description:
29 // 31 //
30 // Roots of ortogonal polynoms and correspondi 32 // Roots of ortogonal polynoms and corresponding weights are calculated based on
31 // iteration method (by bisection Newton algor 33 // iteration method (by bisection Newton algorithm). Constant values for initial
32 // approximations were derived from the book: << 34 // approximations were derived from the book: M. Abramowitz, I. Stegun, Handbook
33 // M. Abramowitz, I. Stegun, Handbook of mat << 35 // of mathematical functions, DOVER Publications INC, New York 1965 ; chapters 9,
34 // DOVER Publications INC, New York 1965 ; c << 36 // 10, and 22 .
>> 37 //
>> 38 // --------------------------------------------------------------------------
>> 39 //
>> 40 // Constructor for Gauss-Hermite quadrature method . The function GaussHermite
>> 41 // should be called then
>> 42 //
>> 43 // G4GaussHermiteQ( function pFunction, G4int nHermite )
>> 44 //
>> 45 // ----------------------------------------------------------------------------
>> 46 //
>> 47 // Gauss-Hermite method for integration of std::exp(-x*x)*nFunction(x) from minus infinity
>> 48 // to plus infinity .
>> 49 //
>> 50 // G4double Integral() const
>> 51
>> 52 // ------------------------------- HISTORY -------------------------------------
>> 53 //
>> 54 // 13.05.97 V.Grichine (Vladimir.Grichine@cern.chz0
35 55
36 // Author: V.Grichine, 13.05.1997 V.Grichine <<
37 // ------------------------------------------- <<
38 #ifndef G4GAUSSHERMITEQ_HH 56 #ifndef G4GAUSSHERMITEQ_HH
39 #define G4GAUSSHERMITEQ_HH 1 << 57 #define G4GAUSSHERMITEQ_HH
40 58
41 #include "G4VGaussianQuadrature.hh" 59 #include "G4VGaussianQuadrature.hh"
42 60
43 class G4GaussHermiteQ : public G4VGaussianQuad 61 class G4GaussHermiteQ : public G4VGaussianQuadrature
44 { 62 {
45 public: << 63 public:
46 // Constructor << 64 // Constructor
>> 65
>> 66 G4GaussHermiteQ( function pFunction, G4int nHermite ) ;
>> 67
>> 68 // Methods
>> 69
>> 70 G4double Integral() const ;
>> 71
>> 72
>> 73 private:
>> 74
>> 75 G4GaussHermiteQ(const G4GaussHermiteQ&);
>> 76 G4GaussHermiteQ& operator=(const G4GaussHermiteQ&);
47 77
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 }; 78 };
59 79
60 #endif 80 #endif
61 81