#include <FunctionWrapper.h>

Public Member Functions
	FunctionWrapper ()
	Default constructor, to enable arrays.
	FunctionWrapper (T(*f)())
	A function with no parameters and no arguments.
	FunctionWrapper (T(*f)(const T &), const Bool isPar)
	A function with parameter and no arguments (Note value of isPar irrelevant).
	FunctionWrapper (T(*f)(const Vector< T > &), const Bool isPar)
	A function with parameters and no arguments.
	FunctionWrapper (T(*f)(const T &))
	Construct a 1-dimensional function with no parameters.
	FunctionWrapper (T(*f)(const T &, const T &), const T &par)
	Construct a 1-dimensional function with parameter.
	FunctionWrapper (T(*f)(const T &, const Vector< T > &), const Vector< T > &par)
	Construct a 1-dimensional function with parameters.
	FunctionWrapper (T(*f)(const Vector< T > &), const Int dim=1)
	Construct an n-dimensional function with no parameters.
	FunctionWrapper (T(*f)(const Vector< T > &, const T &), const T &par, const uInt dim=1)
	Construct an n-dimensional function with parameter.
	FunctionWrapper (T(*f)(const Vector< T > &, const Vector< T > &), const Vector< T > &par, const uInt dim=1)
	Construct an n-dimensional function with parameters.
	FunctionWrapper (const FunctionWrapper< T > &other)
	Copy constructor (reference semantics).
FunctionWrapper< T > &	operator= (const FunctionWrapper< T > &other)
	Copy assignment (reference semantics).
virtual	~FunctionWrapper ()
	Destructor.
virtual T	eval (typename Function< T >::FunctionArg x) const
	Evaluate the function at x.
virtual uInt	ndim () const
	Get the dimensionality.
virtual Function< T > *	clone () const
	Return a copy of this object from the heap.
Public Member Functions inherited from casacore::WrapperParam< T >
	WrapperParam ()
	Construct with the given parameters.
	WrapperParam (const T &par)
	WrapperParam (const Vector< T > &par)
	WrapperParam (const WrapperParam< T > &other)
	Copy constructor (deep copy).
WrapperParam< T > &	operator= (const WrapperParam< T > &other)
	Copy assignment (deep copy).
virtual	~WrapperParam ()
	Destructor.
virtual const String &	name () const
	Give name of function.
Public Member Functions inherited from casacore::Function< T, U >
	Function ()
	Constructors.
	Function (const uInt n)
	Function (const Vector< T > &in)
	Function (const FunctionParam< T > &other)
template<class W, class X>
	Function (const Function< W, X > &other)
virtual	~Function ()
	Destructor.
uInt	nparameters () const
	Returns the number of parameters.
virtual U	eval (FunctionArg x) const =0
	Evaluate the function object.
T &	operator[] (const uInt n)
	Manipulate the nth parameter (0-based) with no index check.
const T &	operator[] (const uInt n) const
virtual U	operator() () const
	Evaluate this function object at xor at x, y.
virtual U	operator() (const ArgType &x) const
virtual U	operator() (const Vector< ArgType > &x) const
virtual U	operator() (FunctionArg x) const
virtual U	operator() (const ArgType &x, const ArgType &y) const
virtual U	operator() (const ArgType &x, const ArgType &y, const ArgType &z) const
Bool &	mask (const uInt n)
	Manipulate the mask associated with the nth parameter (e.g.
const Bool &	mask (const uInt n) const
const FunctionParam< T > &	parameters () const
	Return the parameter interface.
FunctionParam< T > &	parameters ()
const Vector< ArgType > &	argp () const
	Get arg_p and parset_p.
Bool	parsetp () const
void	lockParam ()
	Compiler cannot always find the correct 'const' version of parameter access.
void	unlockParam ()
virtual void	setMode (const RecordInterface &mode)
	get/set the function mode.
virtual void	getMode (RecordInterface &mode) const
virtual Bool	hasMode () const
	return True if the implementing function supports a mode.
ostream &	print (ostream &os) const
	Print the function (i.e.
virtual Function< typename FunctionTraits< T >::DiffType > *	cloneAD () const
virtual Function< typename FunctionTraits< T >::BaseType > *	cloneNonAD () const
Public Member Functions inherited from casacore::Functional< FunctionTraits< T >::ArgType, T >
virtual	~Functional ()
	Destructor.
virtual T	operator() (const FunctionTraits< T >::ArgType &x) const=0
	Map a Domain x into a Range y value.
Public Member Functions inherited from casacore::Functional< Vector< FunctionTraits< T >::ArgType >, T >
virtual	~Functional ()
	Destructor.
virtual T	operator() (const Vector< FunctionTraits< T >::ArgType > &x) const=0
	Map a Domain x into a Range y value.

Protected Attributes
std::shared_ptr< WrapperBase< T > >	doit_p
	The function aid object.
Protected Attributes inherited from casacore::Function< T, U >
FunctionParam< T >	param_p
	The parameters and masks.
Vector< ArgType >	arg_p
	Aid for non-contiguous argument storage.
Bool	parset_p
	Indicate parameter written.
Bool	locked_p
	Indicate that parameters are expected to be locked from changing.

Additional Inherited Members
Public Types inherited from casacore::Function< T, U >
typedef FunctionTraits< T >::ArgType	ArgType
typedef const ArgType *	FunctionArg

Detailed Description

template<class T>
class casacore::FunctionWrapper< T >

Construct nD function objects from C++ functions

Intended use:

Public interface

Review Status

Date Reviewed:: 1996/02/22

Prerequisite

Function class
FunctionParam

Synopsis

This class is provided so that user can quickly construct a function object from a C++ function pointer without having to write a function class. The constructor constructs a function object from a function pointer, and an optional parameter list. Parameters are necessary if the function has to be used in a functional fitting process (see GenericL2Fit).

The general function signature is f(x;p), where x represents the arguments, and p the parameters. The allowed signatures of the function include all combinations of arguments and parameters, and are:

f() no arguments e.g. random number or constant
f(x) 1-dimensional, e.g. sin(x)
f(Vectorx) n-dimensional, e.g. sin(x+2y)

Example

Float func(const Vector<Float>& x) {return x(0)*x(1);}        // x*y
// Convert C++ functions to Functionals
FunctionWrapper<Float> Func(func,2);

Definition at line 83 of file FunctionWrapper.h.

Constructor & Destructor Documentation

◆ FunctionWrapper() [1/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper ( )

Default constructor, to enable arrays.

Referenced by clone(), FunctionWrapper(), and operator=().

◆ FunctionWrapper() [2/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper ( T(* f )() )

A function with no parameters and no arguments.

◆ FunctionWrapper() [3/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper	(	T(*	f )(const T &),
		const Bool	isPar )

A function with parameter and no arguments (Note value of isPar irrelevant).

◆ FunctionWrapper() [4/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper	(	T(*	f )(const Vector< T > &),
		const Bool	isPar )

A function with parameters and no arguments.

(Note value of isPar irrelevant)

◆ FunctionWrapper() [5/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper ( T(* f )(const T &) )

Construct a 1-dimensional function with no parameters.

◆ FunctionWrapper() [6/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper	(	T(*	f )(const T &, const T &),
		const T &	par )

Construct a 1-dimensional function with parameter.

◆ FunctionWrapper() [7/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper	(	T(*	f )(const T &, const Vector< T > &),
		const Vector< T > &	par )

Construct a 1-dimensional function with parameters.

◆ FunctionWrapper() [8/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper	(	T(*	f )(const Vector< T > &),
		const Int	dim = 1 )

Construct an n-dimensional function with no parameters.

◆ FunctionWrapper() [9/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper	(	T(*	f )(const Vector< T > &, const T &),
		const T &	par,
		const uInt	dim = 1 )

Construct an n-dimensional function with parameter.

◆ FunctionWrapper() [10/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper	(	T(*	f )(const Vector< T > &, const Vector< T > &),
		const Vector< T > &	par,
		const uInt	dim = 1 )

Construct an n-dimensional function with parameters.

◆ FunctionWrapper() [11/11]

template<class T>

casacore::FunctionWrapper< T >::FunctionWrapper ( const FunctionWrapper< T > & other )

Copy constructor (reference semantics).

References FunctionWrapper().

◆ ~FunctionWrapper()

template<class T>

virtual casacore::FunctionWrapper< T >::~FunctionWrapper ( )

inlinevirtual

Destructor.

Definition at line 120 of file FunctionWrapper.h.

Member Function Documentation

◆ clone()

template<class T>

virtual Function< T > * casacore::FunctionWrapper< T >::clone ( ) const

inlinevirtual

Return a copy of this object from the heap.

The caller is responsible for deleting this pointer.

Implements casacore::Function< T, U >.

Definition at line 134 of file FunctionWrapper.h.

References FunctionWrapper().

◆ eval()

template<class T>

virtual T casacore::FunctionWrapper< T >::eval ( typename Function< T >::FunctionArg x ) const

virtual

Evaluate the function at x.

◆ ndim()

template<class T>

virtual uInt casacore::FunctionWrapper< T >::ndim ( ) const

virtual

Get the dimensionality.

Implements casacore::Function< T, U >.

◆ operator=()

template<class T>

FunctionWrapper< T > & casacore::FunctionWrapper< T >::operator= ( const FunctionWrapper< T > & other )

Copy assignment (reference semantics).

References FunctionWrapper().

Member Data Documentation

◆ doit_p

template<class T>

std::shared_ptr<WrapperBase<T> > casacore::FunctionWrapper< T >::doit_p

protected

The function aid object.

Definition at line 141 of file FunctionWrapper.h.

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

scimath/Functionals/FunctionWrapper.h

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Intended use:

Review Status

Prerequisite

Synopsis

Example

Constructor & Destructor Documentation

◆ FunctionWrapper() [1/11]

◆ FunctionWrapper() [2/11]

◆ FunctionWrapper() [3/11]

◆ FunctionWrapper() [4/11]

◆ FunctionWrapper() [5/11]

◆ FunctionWrapper() [6/11]

◆ FunctionWrapper() [7/11]

◆ FunctionWrapper() [8/11]

◆ FunctionWrapper() [9/11]

◆ FunctionWrapper() [10/11]

◆ FunctionWrapper() [11/11]

◆ ~FunctionWrapper()

Member Function Documentation

◆ clone()

◆ eval()

◆ ndim()

◆ operator=()

Member Data Documentation

◆ doit_p