G4GaussChebyshevQ.hh

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//
// $Id$
//
// Class description:
//
// Class for Gauss-Chebyshev quadrature method
// 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 .
//
// ------------------------------ CONSTRUCTORS ----------------------------
//
// Constructor for Gauss-Chebyshev quadrature method
//
// G4GaussChebyshevQuadrature( function pFunction,
//                 G4int nChebyshev       )
//
//
//
// ------------------------------- METHODS -----------------------------------
//
// Integrates function pointed by fFunction from a to b by Gauss-Chebyshev quadrature
// method
//
// G4double Integral(G4double a, G4double b) const 
 
// ------------------------------- HISTORY --------------------------------
//
// 13.05.97 V.Grichine ([email protected])
 
#ifndef G4GAUSSCHEBYSHEVQ_HH
#define G4GAUSSCHEBYSHEVQ_HH
 
#include "G4VGaussianQuadrature.hh"
 
class G4GaussChebyshevQ : public G4VGaussianQuadrature
{
public:
        // Constructor/destructor
 
        G4GaussChebyshevQ( function pFunction,
               G4int nChebyshev           ) ;
               
    ~G4GaussChebyshevQ() ;         
                   
        // Methods
                 
        G4double Integral(G4double a, G4double b) const ;
 
 
private:
 
    G4GaussChebyshevQ(const G4GaussChebyshevQ&);
    G4GaussChebyshevQ& operator=(const G4GaussChebyshevQ&);
 
};
 
#endif