class ROOT::Math::WrappedTF1: public ROOT::Math::IParametricGradFunctionOneDim

Function Members (Methods)

public:
virtual~WrappedTF1()
virtual ROOT::Math::IGenFunction*Clone() const
virtual unsigned intNPar() const
doubleROOT::Math::IParametricFunctionOneDim::operator()(double x, const double* p) const
doubleROOT::Math::IParametricFunctionOneDim::operator()(const double* x, const double* p)
ROOT::Math::WrappedTF1&operator=(const ROOT::Math::WrappedTF1& rhs)
doubleROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative(double x, unsigned int ipar = 0) const
doubleROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative(const double* x, unsigned int ipar = 0) const
doubleROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative(double x, const double* p, unsigned int ipar = 0) const
doubleROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative(const double* x, const double* p, unsigned int ipar = 0) const
virtual voidParameterGradient(double x, const double* par, double* grad) const
virtual stringParameterName(unsigned int i) const
virtual const double*Parameters() const
virtual voidSetParameters(const double* p)
ROOT::Math::WrappedTF1WrappedTF1()
ROOT::Math::WrappedTF1WrappedTF1(TF1& f)
ROOT::Math::WrappedTF1WrappedTF1(const ROOT::Math::WrappedTF1& rhs)
private:
doubleDoDerivative(double x) const
virtual doubleDoEval(double x) const
virtual doubleDoEvalPar(double x, const double* p) const
virtual doubleDoParameterDerivative(double x, const double* p, unsigned int ipar) const

Data Members

private:
TF1*fFuncpointer to ROOT function
boolfLinearflag for linear functions
vector<double>fParamscached vector with parameter values
boolfPolynomialflag for polynomial functions
doublefX[1]! cached vector for x value (needed for TF1::EvalPar signature)

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

WrappedTF1()
{}
WrappedTF1( TF1 & f )
      constructor from a function pointer.

virtual ~WrappedTF1()
      Destructor (no operations). TF1 Function pointer is not owned

{}
WrappedTF1(const WrappedTF1 & rhs)
      Copy constructor

ROOT::Math::IGenFunction * Clone() const
 @name interface inherited from IFunction 

       Clone the wrapper but not the original function

const double * Parameters() const
 @name interface inherited from IParamFunction 
 get the parameter values (return values cachen inside, those inside TF1 might be different)
void SetParameters(const double* p)
 set parameter values (only the cached one in this class,leave unchanges those of TF1)
unsigned int NPar() const
 return number of parameters
std::string ParameterName(unsigned int i) const
 return parameter name (this is stored in TF1)
void ParameterGradient(double x, const double* par, double* grad) const
 evaluate the derivative of the function with respect to the parameters
double DoEvalPar(double x, const double* p) const
 evaluate function passing coordinates x and vector of parameters
double DoEval(double x) const
 evaluate function using the cached parameter values of this class (not of TF1)
 re-implement for better efficiency
double DoDerivative(double x) const
 return the function derivatives w.r.t. x
double DoParameterDerivative(double x, const double* p, unsigned int ipar) const
 evaluate the derivative of the function with respect to the parameters

Author: L. Moneta Wed Sep 6 09:52:26 2006
Last change: root/mathmore:$Id: WrappedTF1.h 26946 2008-12-16 10:47:01Z moneta $
Last generated: 2008-12-16 12:07
Copyright (c) 2006 LCG ROOT Math Team, CERN/PH-SFT *

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