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>> 2 // the GEANT4 collaboration.
1 // 3 //
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15 // * use. Please see the license in the file <<
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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 // G4GaussHermiteQ << 8 // $Id: G4GaussHermiteQ.hh,v 1.3 2000/11/20 17:26:42 gcosmo Exp $
>> 9 // GEANT4 tag $Name: geant4-03-00 $
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-Hermite quadrature method . The function GaussHermite
>> 22 // should be called then
>> 23 //
>> 24 // G4GaussHermiteQ( function pFunction, G4int nHermite )
>> 25 //
>> 26 // ----------------------------------------------------------------------------
>> 27 //
>> 28 // Gauss-Hermite method for integration of exp(-x*x)*nFunction(x) from minus infinity
>> 29 // to plus infinity .
>> 30 //
>> 31 // G4double Integral() const
>> 32
>> 33 // ------------------------------- HISTORY -------------------------------------
>> 34 //
>> 35 // 13.05.97 V.Grichine (Vladimir.Grichine@cern.chz0
35 36
36 // Author: V.Grichine, 13.05.1997 V.Grichine <<
37 // ------------------------------------------- <<
38 #ifndef G4GAUSSHERMITEQ_HH 37 #ifndef G4GAUSSHERMITEQ_HH
39 #define G4GAUSSHERMITEQ_HH 1 << 38 #define G4GAUSSHERMITEQ_HH
40 39
41 #include "G4VGaussianQuadrature.hh" 40 #include "G4VGaussianQuadrature.hh"
42 41
43 class G4GaussHermiteQ : public G4VGaussianQuad 42 class G4GaussHermiteQ : public G4VGaussianQuadrature
44 { 43 {
45 public: << 44 public:
46 // Constructor << 45 // Constructor
>> 46
>> 47 G4GaussHermiteQ( function pFunction, G4int nHermite ) ;
>> 48
>> 49 // Methods
>> 50
>> 51 G4double Integral() const ;
>> 52
>> 53
>> 54 private:
>> 55
>> 56 G4GaussHermiteQ(const G4GaussHermiteQ&);
>> 57 G4GaussHermiteQ& operator=(const G4GaussHermiteQ&);
47 58
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 }; 59 };
59 60
60 #endif 61 #endif
61 62