Interface (abstract class) for parametric one-dimensional gradient functions providing in addition to function evaluation with respect the coordinates also the gradient with respect to the parameters, via the method ParameterGradient.

It is a derived class from ROOT::Math::IParametricFunctionOneDim.

The pure private virtual method DoParameterGradient must be implemented by the derived classes in addition to those inherited by the base abstract classes.

Definition at line 327 of file IParamFunction.h.

Public Types
typedef IParametricFunctionOneDim::BaseFunc	BaseFunc

typedef IGradientFunctionOneDim	BaseGradFunc

typedef IParametricFunctionOneDim	BaseParamFunc

Public Types inherited from ROOT::Math::IParametricFunctionOneDim
typedef IBaseFunctionOneDim	BaseFunc

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

Public Member Functions
	~IParametricGradFunctionOneDim () override
	Virtual Destructor (no operations)

double	ParameterDerivative (const double x, const double p, unsigned int ipar=0) const
	Partial derivative with respect a parameter Compatibility interface with multi-dimensional functions.

double	ParameterDerivative (const double *x, unsigned int ipar=0) const
	Evaluate partial derivative using cached parameter values (multi-dim like interface)

double	ParameterDerivative (double x, const double *p, unsigned int ipar=0) const
	Partial derivative with respect a parameter.

double	ParameterDerivative (double x, unsigned int ipar=0) const
	Evaluate partial derivative using cached parameter values.

void	ParameterGradient (const double x, const double p, double *grad) const
	Compatibility interface with multi-dimensional functions.

void	ParameterGradient (const double x, double grad) const
	Evaluate all derivatives using cached parameter values (multi-dim like interface)

virtual void	ParameterGradient (double x, const double p, double grad) const
	Evaluate the derivatives of the function with respect to the parameters at a point x.

void	ParameterGradient (double x, double *grad) const
	Evaluate all derivatives using cached parameter values.

Public Member Functions inherited from ROOT::Math::IParametricFunctionOneDim
double	operator() (const double x, const double p) const
	multidim-like interface

double	operator() (double x, const double *p) const
	Evaluate function at a point x and for given parameters p.

Public Member Functions inherited from ROOT::Math::IBaseFunctionOneDim
virtual	~IBaseFunctionOneDim ()=default

virtual IBaseFunctionOneDim *	Clone () const =0
	Clone a function.

virtual bool	HasGradient () const

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

double	operator() (double x) const
	Evaluate the function at a point x.

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

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

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, ...")

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

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

Private Member Functions
virtual double	DoParameterDerivative (double x, const double *p, unsigned int ipar) const =0
	Evaluate the gradient, to be implemented by the derived classes.

#include <Math/IParamFunction.h>

Inheritance diagram for ROOT::Math::IParametricGradFunctionOneDim:

[legend]

Member Typedef Documentation

◆ BaseFunc

typedef IParametricFunctionOneDim::BaseFunc ROOT::Math::IParametricGradFunctionOneDim::BaseFunc

Definition at line 336 of file IParamFunction.h.

◆ BaseGradFunc

typedef IGradientFunctionOneDim ROOT::Math::IParametricGradFunctionOneDim::BaseGradFunc

Definition at line 335 of file IParamFunction.h.

◆ BaseParamFunc

typedef IParametricFunctionOneDim ROOT::Math::IParametricGradFunctionOneDim::BaseParamFunc

Definition at line 334 of file IParamFunction.h.

Constructor & Destructor Documentation

◆ ~IParametricGradFunctionOneDim()

ROOT::Math::IParametricGradFunctionOneDim::~IParametricGradFunctionOneDim ( )

inlineoverride

Virtual Destructor (no operations)

Definition at line 342 of file IParamFunction.h.

Member Function Documentation

◆ DoParameterDerivative()

virtual double ROOT::Math::IParametricGradFunctionOneDim::DoParameterDerivative	(	double	x,
		const double *	p,
		unsigned int	ipar
	)		const

privatepure virtual

Evaluate the gradient, to be implemented by the derived classes.

Implemented in ROOT::Math::WrappedTF1, and ROOT::Math::Polynomial.

◆ ParameterDerivative() [1/4]

double ROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative	(	const double *	x,
		const double *	p,
		unsigned int	ipar = `0`
	)		const

inline

Partial derivative with respect a parameter Compatibility interface with multi-dimensional functions.

Definition at line 403 of file IParamFunction.h.

◆ ParameterDerivative() [2/4]

double ROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative	(	const double *	x,
		unsigned int	ipar = `0`
	)		const

inline

Evaluate partial derivative using cached parameter values (multi-dim like interface)

Definition at line 412 of file IParamFunction.h.

◆ ParameterDerivative() [3/4]

double ROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative	(	double	x,
		const double *	p,
		unsigned int	ipar = `0`
	)		const

inline

Partial derivative with respect a parameter.

Definition at line 386 of file IParamFunction.h.

◆ ParameterDerivative() [4/4]

double ROOT::Math::IParametricGradFunctionOneDim::ParameterDerivative	(	double	x,
		unsigned int	ipar = `0`
	)		const

inline

Evaluate partial derivative using cached parameter values.

Definition at line 394 of file IParamFunction.h.

◆ ParameterGradient() [1/4]

void ROOT::Math::IParametricGradFunctionOneDim::ParameterGradient	(	const double *	x,
		const double *	p,
		double *	grad
	)		const

inline

Compatibility interface with multi-dimensional functions.

Definition at line 369 of file IParamFunction.h.

◆ ParameterGradient() [2/4]

void ROOT::Math::IParametricGradFunctionOneDim::ParameterGradient	(	const double *	x,
		double *	grad
	)		const

inline

Evaluate all derivatives using cached parameter values (multi-dim like interface)

Definition at line 377 of file IParamFunction.h.

◆ ParameterGradient() [3/4]

virtual void ROOT::Math::IParametricGradFunctionOneDim::ParameterGradient	(	double	x,
		const double *	p,
		double *	grad
	)		const

inlinevirtual

Evaluate the derivatives of the function with respect to the parameters at a point x.

It is optional to be implemented by the derived classes for better efficiency if needed

Reimplemented in ROOT::Math::WrappedTF1.

Definition at line 351 of file IParamFunction.h.

◆ ParameterGradient() [4/4]

void ROOT::Math::IParametricGradFunctionOneDim::ParameterGradient	(	double	x,
		double *	grad
	)		const

inline

Evaluate all derivatives using cached parameter values.

Definition at line 361 of file IParamFunction.h.

Libraries for ROOT::Math::IParametricGradFunctionOneDim:

[legend]

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

math/mathcore/inc/Math/IParamFunction.h

Public Types

Public Member Functions

Private Member Functions

Member Typedef Documentation

◆ BaseFunc

◆ BaseGradFunc

◆ BaseParamFunc

Constructor & Destructor Documentation

◆ ~IParametricGradFunctionOneDim()

Member Function Documentation

◆ DoParameterDerivative()

◆ ParameterDerivative() [1/4]

◆ ParameterDerivative() [2/4]

◆ ParameterDerivative() [3/4]

◆ ParameterDerivative() [4/4]

◆ ParameterGradient() [1/4]

◆ ParameterGradient() [2/4]

◆ ParameterGradient() [3/4]

◆ ParameterGradient() [4/4]