IParamFunction interface (abstract class) describing multi-dimensional parameteric functions It is a derived class from ROOT::Math::IBaseFunctionMultiDim and ROOT::Math::IBaseParam.

Provides the interface for evaluating a function passing a coordinate vector and a parameter vector.

Definition at line 108 of file IParamFunction.h.

Public Types
typedef IBaseFunctionMultiDim	BaseFunc

Public Types inherited from ROOT::Math::IBaseFunctionMultiDim
typedef IBaseFunctionMultiDim	BaseFunc

Public Member Functions
double	operator() (const double x, const double p) const
	Evaluate function at a point x and for given parameters p. More...

Public Member Functions inherited from ROOT::Math::IBaseFunctionMultiDim
	IBaseFunctionMultiDim ()

virtual	~IBaseFunctionMultiDim ()
	virtual destructor More...

virtual IBaseFunctionMultiDim *	Clone () const =0
	Clone a function. More...

virtual unsigned int	NDim () const =0
	Retrieve the dimension of the function. More...

double	operator() (const double *x) const
	Evaluate the function at a point x[]. More...

Public Member Functions inherited from ROOT::Math::IBaseParam
virtual	~IBaseParam ()
	Virtual Destructor (no operations) More...

virtual unsigned int	NPar () const =0
	Return the number of Parameters. More...

virtual std::string	ParameterName (unsigned int i) const
	Return the name of the i-th parameter (starting from zero) Overwrite if want to avoid the default name ("Par_0, Par_1, ...") More...

virtual const double *	Parameters () const =0
	Access the parameter values. More...

virtual void	SetParameters (const double *p)=0
	Set the parameter values. More...

Private Member Functions
virtual double	DoEval (const double *x) const
	Implement the ROOT::Math::IBaseFunctionMultiDim interface DoEval(x) using the cached parameter values. More...

virtual double	DoEvalPar (const double x, const double p) const =0
	Implementation of the evaluation function using the x values and the parameters. More...

#include <Math/IParamFunction.h>

Inheritance diagram for ROOT::Math::IParametricFunctionMultiDim:

[legend]

Member Typedef Documentation

◆ BaseFunc

typedef IBaseFunctionMultiDim ROOT::Math::IParametricFunctionMultiDim::BaseFunc

Definition at line 114 of file IParamFunction.h.

Member Function Documentation

◆ DoEval()

virtual double ROOT::Math::IParametricFunctionMultiDim::DoEval ( const double * x ) const

inlineprivatevirtual

Implement the ROOT::Math::IBaseFunctionMultiDim interface DoEval(x) using the cached parameter values.

Implements ROOT::Math::IBaseFunctionMultiDim.

Reimplemented in ROOT::Math::WrappedParamFunctionGen< FuncPtr >, and ROOT::Math::WrappedMultiTF1.

Definition at line 143 of file IParamFunction.h.

◆ DoEvalPar()

virtual double ROOT::Math::IParametricFunctionMultiDim::DoEvalPar	(	const double *	x,
		const double *	p
	)		const

privatepure virtual

Implementation of the evaluation function using the x values and the parameters.

Must be implemented by derived classes

Implemented in ROOT::Math::MultiDimParamGradFunctionAdapter, ROOT::Math::WrappedParamFunctionGen< FuncPtr >, WrapperRooPdf, ROOT::Math::WrappedMultiTF1, ROOT::Math::MultiDimParamFunctionAdapter, ROOT::Math::WrappedParamFunction< FuncPtr >, and GaussFunction.

◆ operator()()

double ROOT::Math::IParametricFunctionMultiDim::operator()	(	const double *	x,
		const double *	p
	)		const

inline

Evaluate function at a point x and for given parameters p.

This method does not change the internal status of the function (internal parameter values). If for some reason one prefers caching the parameter values, SetParameters(p) and then operator()(x) should be called. Use the pure virtual function DoEvalPar to implement it

Definition at line 125 of file IParamFunction.h.

The documentation for this class was generated from the following file:

math/mathcore/inc/Math/IParamFunction.h

Public Types