Gabriele Cosmo
116 lines
4.3 KiB
C++
116 lines
4.3 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// INCL++ intra-nuclear cascade model
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// Alain Boudard, CEA-Saclay, France
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// Joseph Cugnon, University of Liege, Belgium
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// Jean-Christophe David, CEA-Saclay, France
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// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
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// Sylvie Leray, CEA-Saclay, France
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// Davide Mancusi, CEA-Saclay, France
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//
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#define INCLXX_IN_GEANT4_MODE 1
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#include "globals.hh"
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/** \file G4INCLIFunction1D.hh
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* \brief Functor for 1-dimensional mathematical functions
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*
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* \date 16 July 2012
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* \author Davide Mancusi
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*/
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#ifndef G4INCLIFUNCTION1D_HH_
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#define G4INCLIFUNCTION1D_HH_ 1
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#include <vector>
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namespace G4INCL {
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// Forward declaration
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class InterpolationTable;
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/**
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* 1D function interface
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*/
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class IFunction1D {
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public:
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IFunction1D() :
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xMin(0.),
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xMax(0.)
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{};
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IFunction1D(const G4double x0, const G4double x1) :
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xMin(x0),
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xMax(x1)
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{};
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virtual ~IFunction1D() {};
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/// \brief Return the minimum allowed value of the independent variable
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virtual inline G4double getXMinimum() const { return xMin; }
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/// \brief Return the maximum allowed value of the independent variable
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virtual inline G4double getXMaximum() const { return xMax; }
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/// \brief Compute the value of the function
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virtual G4double operator()(const G4double x) const = 0;
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/** \brief Integrate the function between two values
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*
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* \param x0 lower integration bound
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* \param x1 upper integration bound
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* \param step largest integration step size; if <0, 45 steps will be used
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* \return \f$\int_{x_0}^{x_1} f(x) dx\f$
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*/
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virtual G4double integrate(const G4double x0, const G4double x1, const G4double step=-1.) const;
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/// \brief Return a pointer to the (numerical) primitive to this function
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IFunction1D *primitive() const;
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/// \brief Typedef to simplify the syntax of inverseCDFTable
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typedef G4double (* const ManipulatorFunc)(const G4double);
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/** \brief Return a pointer to the inverse of the CDF of this function
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*
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* The function parameter fWrap is wrapped around the return value of
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* operator(). If fWrap=NULL (default), fWrap=identity.
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*/
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InterpolationTable *inverseCDFTable(ManipulatorFunc fWrap=0, const G4int nNodes=60) const;
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protected:
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/// \brief Minimum value of the independent variable
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G4double xMin;
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/// \brief Maximum value of the independent variable
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G4double xMax;
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private:
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/// \brief Coefficients for numerical integration
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static const G4double integrationCoefficients[];
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};
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}
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#endif // G4INCLIFUNCTION1D_HH_
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