G4GaussHermiteQ.hh

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//
// G4GaussHermiteQ
//
// Class description:
//
// Roots of ortogonal polynoms and corresponding weights are calculated based on
// iteration method (by bisection Newton algorithm). Constant values for initial
// approximations were derived from the book:
//   M. Abramowitz, I. Stegun, Handbook of mathematical functions,
//   DOVER Publications INC, New York 1965 ; chapters 9, 10, and 22.
 
// Author: V.Grichine, 13.05.1997 V.Grichine
// --------------------------------------------------------------------
#ifndef G4GAUSSHERMITEQ_HH
#define G4GAUSSHERMITEQ_HH 1
 
#include "G4VGaussianQuadrature.hh"
 
class G4GaussHermiteQ : public G4VGaussianQuadrature
{
 public:
  // Constructor
 
  G4GaussHermiteQ(function pFunction, G4int nHermite);
  // Constructor for Gauss-Hermite quadrature method.
  // The function GaussHermite should be called then.
 
  G4GaussHermiteQ(const G4GaussHermiteQ&) = delete;
  G4GaussHermiteQ& operator=(const G4GaussHermiteQ&) = delete;
 
  G4double Integral() const;
  // Gauss-Hermite method for integration of std::exp(-x*x)*nFunction(x) from
  // minus infinity to plus infinity.
};
 
#endif