ROOT::Math::Functor1D Class Reference

Functor1D class for one-dimensional functions.

It is used to wrap in a very simple and convenient way:

• any C++ callable object implementation double operator()( double )
• a free C function of type double ()(double )
• a member function with the correct signature like Foo::Eval(double ). In this case one pass the object pointer and a pointer to the member function (&Foo::Eval)

Definition at line 578 of file Functor.h.

Public Types
typedef FunctorImpl< IBaseFunctionOneDim >	Impl
typedef IBaseFunctionOneDim::BaseFunc	ImplBase
Public Types inherited from ROOT::Math::IBaseFunctionOneDim
typedef IBaseFunctionOneDim	BaseFunc

Public Member Functions
	Functor1D ()
	Default constructor.
template<typename Func >
	Functor1D (const Func &f)
	construct from a callable object with the right signature implementing operator() (double x)
	Functor1D (const Functor1D &rhs)
	Copy constructor for Functor based on ROOT::Math::IGenFunction.
template<class PtrObj , typename MemFn >
	Functor1D (const PtrObj &p, MemFn memFn)
	construct from a pointer to member function (1D type)
	Functor1D (const std::function< double(double)> &f)
	specialized constructor from a std::function implementing the function evaluation.
virtual	~Functor1D ()
	Destructor (no operations)
ImplBase *	Clone () const
	Clone a function.
Functor1D &	operator= (const Functor1D &rhs)
	Assignment operator.
Public Member Functions inherited from ROOT::Math::IBaseFunctionOneDim
	IBaseFunctionOneDim ()
virtual	~IBaseFunctionOneDim ()
	virtual destructor
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 Use the a pure virtual private method DoEval which must be implemented by sub-classes.

Private Member Functions
double	DoEval (double x) const
	implementation of the evaluation function. Must be implemented by derived classes

Private Attributes
std::unique_ptr< Impl >	fImpl

#include <Math/Functor.h>

Inheritance diagram for ROOT::Math::Functor1D:

Member Typedef Documentation

Impl

typedef FunctorImpl<IBaseFunctionOneDim> ROOT::Math::Functor1D::Impl

Definition at line 583 of file Functor.h.

ImplBase

typedef IBaseFunctionOneDim::BaseFunc ROOT::Math::Functor1D::ImplBase

Definition at line 584 of file Functor.h.

Constructor & Destructor Documentation

Functor1D() [1/5]

ROOT::Math::Functor1D::Functor1D ( )

inline

Default constructor.

Definition at line 589 of file Functor.h.

Functor1D() [2/5]

template<typename Func >

ROOT::Math::Functor1D::Functor1D ( const Func &  f )

inline

construct from a callable object with the right signature implementing operator() (double x)

Definition at line 596 of file Functor.h.

Functor1D() [3/5]

template<class PtrObj , typename MemFn >

ROOT::Math::Functor1D::Functor1D ( const PtrObj &  p, MemFn  memFn  )

inline

construct from a pointer to member function (1D type)

Definition at line 605 of file Functor.h.

Functor1D() [4/5]

ROOT::Math::Functor1D::Functor1D ( const std::function< double(double)> &  f )

inline

specialized constructor from a std::function implementing the function evaluation.

This specialized constructor is introduced in order to use the Functor class in Python passing Python user defined functions

Definition at line 614 of file Functor.h.

~Functor1D()

virtual ROOT::Math::Functor1D::~Functor1D ( )

inlinevirtual

Destructor (no operations)

Definition at line 621 of file Functor.h.

Functor1D() [5/5]

ROOT::Math::Functor1D::Functor1D ( const Functor1D &  rhs )

inline

Copy constructor for Functor based on ROOT::Math::IGenFunction.

Definition at line 627 of file Functor.h.

Member Function Documentation

Clone()

ImplBase * ROOT::Math::Functor1D::Clone ( ) const

inlinevirtual

Clone a function.

Each derived class will implement their version of the provate DoClone method

Implements ROOT::Math::IBaseFunctionOneDim.

Definition at line 646 of file Functor.h.

DoEval()

double ROOT::Math::Functor1D::DoEval ( double  x ) const

inlineprivatevirtual

implementation of the evaluation function. Must be implemented by derived classes

Implements ROOT::Math::IBaseFunctionOneDim.

Definition at line 650 of file Functor.h.

operator=()

Functor1D & ROOT::Math::Functor1D::operator= ( const Functor1D &  rhs )

inline

Assignment operator.

Definition at line 639 of file Functor.h.

Member Data Documentation

fImpl

std::unique_ptr<Impl> ROOT::Math::Functor1D::fImpl

private

Definition at line 654 of file Functor.h.

Libraries for ROOT::Math::Functor1D:

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

• math/mathcore/inc/Math/Functor.h