00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id$ 00028 // 00029 // Class description: 00030 // 00031 // Roots of ortogonal polynoms and corresponding weights are calculated based on 00032 // iteration method (by bisection Newton algorithm). Constant values for initial 00033 // approximations were derived from the book: M. Abramowitz, I. Stegun, Handbook 00034 // of mathematical functions, DOVER Publications INC, New York 1965 ; chapters 9, 00035 // 10, and 22 . 00036 // 00037 // --------------------------------------------------------------------------- 00038 // 00039 // Constructor for Gauss-Jacobi integration method. 00040 // 00041 // G4GaussJacobiQ( function pFunction, 00042 // G4double alpha, 00043 // G4double beta, 00044 // G4int nJacobi ) 00045 // 00046 // ---------------------------------------------------------------------------- 00047 // 00048 // Gauss-Jacobi method for integration of ((1-x)^alpha)*((1+x)^beta)*pFunction(x) 00049 // from minus unit to plus unit . 00050 // 00051 // G4double Integral() const 00052 00053 // ------------------------------- HISTORY ------------------------------------- 00054 // 00055 // 13.05.97 V.Grichine (Vladimir.Grichine@cern.chz0 00056 00057 #ifndef G4GAUSSJACOBIQ_HH 00058 #define G4GAUSSJACOBIQ_HH 00059 00060 #include "G4VGaussianQuadrature.hh" 00061 00062 class G4GaussJacobiQ : public G4VGaussianQuadrature 00063 { 00064 public: 00065 // Constructor 00066 00067 G4GaussJacobiQ( function pFunction, 00068 G4double alpha, 00069 G4double beta, 00070 G4int nJacobi ) ; 00071 00072 // Methods 00073 00074 G4double Integral() const ; 00075 00076 private: 00077 00078 G4GaussJacobiQ(const G4GaussJacobiQ&); 00079 G4GaussJacobiQ& operator=(const G4GaussJacobiQ&); 00080 }; 00081 00082 #endif