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25 // 25 //
26 // G4GaussHermiteQ 26 // G4GaussHermiteQ
27 // 27 //
28 // Class description: 28 // Class description:
29 // 29 //
30 // Roots of ortogonal polynoms and correspondi 30 // Roots of ortogonal polynoms and corresponding weights are calculated based on
31 // iteration method (by bisection Newton algor 31 // iteration method (by bisection Newton algorithm). Constant values for initial
32 // approximations were derived from the book: 32 // approximations were derived from the book:
33 // M. Abramowitz, I. Stegun, Handbook of mat 33 // M. Abramowitz, I. Stegun, Handbook of mathematical functions,
34 // DOVER Publications INC, New York 1965 ; c 34 // DOVER Publications INC, New York 1965 ; chapters 9, 10, and 22.
35 35
36 // Author: V.Grichine, 13.05.1997 V.Grichine 36 // Author: V.Grichine, 13.05.1997 V.Grichine
37 // ------------------------------------------- 37 // --------------------------------------------------------------------
38 #ifndef G4GAUSSHERMITEQ_HH 38 #ifndef G4GAUSSHERMITEQ_HH
39 #define G4GAUSSHERMITEQ_HH 1 39 #define G4GAUSSHERMITEQ_HH 1
40 40
41 #include "G4VGaussianQuadrature.hh" 41 #include "G4VGaussianQuadrature.hh"
42 42
43 class G4GaussHermiteQ : public G4VGaussianQuad 43 class G4GaussHermiteQ : public G4VGaussianQuadrature
44 { 44 {
45 public: 45 public:
46 // Constructor 46 // Constructor
47 47
48 G4GaussHermiteQ(function pFunction, G4int nH 48 G4GaussHermiteQ(function pFunction, G4int nHermite);
49 // Constructor for Gauss-Hermite quadrature 49 // Constructor for Gauss-Hermite quadrature method.
50 // The function GaussHermite should be calle 50 // The function GaussHermite should be called then.
51 51
52 G4GaussHermiteQ(const G4GaussHermiteQ&) = de 52 G4GaussHermiteQ(const G4GaussHermiteQ&) = delete;
53 G4GaussHermiteQ& operator=(const G4GaussHerm 53 G4GaussHermiteQ& operator=(const G4GaussHermiteQ&) = delete;
54 54
55 G4double Integral() const; 55 G4double Integral() const;
56 // Gauss-Hermite method for integration of s 56 // Gauss-Hermite method for integration of std::exp(-x*x)*nFunction(x) from
57 // minus infinity to plus infinity. 57 // minus infinity to plus infinity.
58 }; 58 };
59 59
60 #endif 60 #endif
61 61