The F O R M U L A class.

This is a new version of the TFormula class based on Cling. This class is not 100% backward compatible with the old TFOrmula class, which is still available in ROOT as ROOT::v5::TFormula. Some of the TFormula member funtions available in version 5, such as Analyze and AnalyzeFunction are not available in the new TFormula. On the other hand formula expressions which were valid in version 5 are still valid in TFormula version 6

This class has been implemented during Google Summer of Code 2013 by Maciej Zimnoch.

Example of valid expressions:

sin(x)/x
[0]*sin(x) + [1]*exp(-[2]*x)
x + y**2
x^2 + y^2
[0]*pow([1],4)
2*pi*sqrt(x/y)
gaus(0)*expo(3) + ypol3(5)*x
gausn(0)*expo(3) + ypol3(5)*x

In the last example above:

gaus(0) is a substitute for [0]*exp(-0.5*((x-[1])/[2])**2) and (0) means start numbering parameters at 0
gausn(0) is a substitute for [0]*exp(-0.5*((x-[1])/[2])**2)/(sqrt(2*pi)*[2])) and (0) means start numbering parameters at 0
expo(3) is a substitute for exp([3]+[4]*x
pol3(5) is a substitute for par[5]+par[6]*x+par[7]*x**2+par[8]*x**3 (PolN stands for Polynomial of degree N)

TMath functions can be part of the expression, eg:

TMath::Landau(x)*sin(x)
TMath::Erf(x)

Formula may contain constans, eg:

sqrt2
e
pi
ln10
infinity

and more.

Comparisons operators are also supported (&&, ||, ==, <=, >=, !)

Examples:

    `sin(x*(x<0.5 || x>1))`

If the result of a comparison is TRUE, the result is 1, otherwise 0.

Already predefined names can be given. For example, if the formula

 `TFormula old("old",sin(x*(x<0.5 || x>1)))`

one can assign a name to the formula. By default the name of the object = title = formula itself.

 `TFormula new("new","x*old")`

is equivalent to:

 `TFormula new("new","x*sin(x*(x&lt;0.5 || x&gt;1))")`

The class supports unlimited numer of variables and parameters. By default the names which can be used for the variables are x,y,z,t or x[0],x[1],x[2],x[3],....x[N] for N-dimensionals formula.

This class is not anymore the base class for the function classes TF1, but it has now adata member of TF1 which can be access via TF1::GetFormula.

Definition at line 89 of file TFormula.h.

Public Types
enum	{ kNormalized = BIT(14), kLinear = BIT(16), kLambda = BIT(17) }

Public Types inherited from TObject
enum	EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) }

enum	{ kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }

enum	{ kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }

Public Member Functions
	TFormula ()

virtual	~TFormula ()

TFormula &	operator= (const TFormula &rhs)

	TFormula (const char name, const char formula="", bool addToGlobList=true)

	TFormula (const char name, const char formula, int ndim, int npar, bool addToGlobList=true)

	TFormula (const TFormula &formula)

void	AddParameter (const TString &name, Double_t value=0)

void	AddVariable (const TString &name, Double_t value=0)

void	AddVariables (const TString *vars, const Int_t size)

Int_t	Compile (const char *expression="")

virtual void	Copy (TObject &f1) const
	Copy this to obj. More...

virtual void	Clear (Option_t *option="")
	Set name and title to empty strings (""). More...

Double_t	Eval (Double_t x) const

Double_t	Eval (Double_t x, Double_t y) const

Double_t	Eval (Double_t x, Double_t y, Double_t z) const

Double_t	Eval (Double_t x, Double_t y, Double_t z, Double_t t) const

Double_t	EvalPar (const Double_t x, const Double_t params=0) const

TString	GetExpFormula (Option_t *option="") const

const TObject *	GetLinearPart (Int_t i) const

Int_t	GetNdim () const

Int_t	GetNpar () const

Int_t	GetNumber () const

const char *	GetParName (Int_t ipar) const

Int_t	GetParNumber (const char *name) const

Double_t	GetParameter (const char *name) const

Double_t	GetParameter (Int_t param) const

Double_t *	GetParameters () const

void	GetParameters (Double_t *params) const

Double_t	GetVariable (const char *name) const

Int_t	GetVarNumber (const char *name) const

TString	GetVarName (Int_t ivar) const

Bool_t	IsValid () const

Bool_t	IsLinear () const

void	Print (Option_t *option="") const
	Print TNamed name and title. More...

void	SetName (const char *name)
	Change (i.e. More...

void	SetParameter (const char *name, Double_t value)

void	SetParameter (Int_t param, Double_t value)

void	SetParameters (const Double_t *params)

void	SetParameters (Double_t p0, Double_t p1, Double_t p2=0, Double_t p3=0, Double_t p4=0, Double_t p5=0, Double_t p6=0, Double_t p7=0, Double_t p8=0, Double_t p9=0, Double_t p10=0)

void	SetParName (Int_t ipar, const char *name)

void	SetParNames (const char name0="p0", const char name1="p1", const char name2="p2", const char name3="p3", const char name4="p4", const char name5="p5", const char name6="p6", const char name7="p7", const char name8="p8", const char name9="p9", const char *name10="p10")

void	SetVariable (const TString &name, Double_t value)

void	SetVariables (const std::pair< TString, Double_t > *vars, const Int_t size)

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TString &name, const TString &title)

	TNamed (const TNamed &named)

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator. More...

virtual	~TNamed ()

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility. More...

virtual Int_t	Compare (const TObject *obj) const
	Compare two TNamed objects. More...

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer. More...

virtual const char *	GetName () const
	Returns name of object. More...

virtual const char *	GetTitle () const
	Returns title of object. More...

virtual ULong_t	Hash () const
	Return hash value for this object. More...

virtual Bool_t	IsSortable () const

virtual void	SetNameTitle (const char name, const char title)
	Change (i.e. set) all the TNamed parameters (name and title). More...

virtual void	SetTitle (const char *title="")
	Change (i.e. set) the title of the TNamed. More...

virtual void	ls (Option_t *option="") const
	List TNamed name and title. More...

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject. More...

Public Member Functions inherited from TObject
	TObject ()

	TObject (const TObject &object)
	TObject copy ctor. More...

TObject &	operator= (const TObject &rhs)
	TObject assignment operator. More...

virtual	~TObject ()
	TObject destructor. More...

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad. More...

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action. More...

virtual const char *	ClassName () const
	Returns name of class to which the object belongs. More...

virtual void	Delete (Option_t *option="")
	Delete this object. More...

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object. More...

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects. More...

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs. More...

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current pad. More...

virtual void	Dump () const
	Dump contents of object on stdout. More...

virtual void	Execute (const char method, const char params, Int_t *error=0)
	Execute method on this object with the given parameter string, e.g. More...

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray. More...

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py). More...

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes. More...

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object. More...

virtual UInt_t	GetUniqueID () const
	Return the unique object id. More...

virtual const char *	GetIconName () const
	Returns mime type name of object. More...

virtual Option_t *	GetOption () const

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py). More...

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out. More...

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname". More...

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl. More...

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas. More...

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory). More...

Bool_t	IsOnHeap () const

Bool_t	IsZombie () const

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification. More...

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself. More...

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list. More...

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory. More...

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list. More...

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename. More...

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out". More...

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object. More...

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id. More...

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory. More...

void *	operator new (size_t sz)

void *	operator new[] (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz, void *vp)

void	operator delete (void *ptr)
	Operator delete. More...

void	operator delete[] (void *ptr)
	Operator delete []. More...

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f. More...

void	SetBit (UInt_t f)

void	ResetBit (UInt_t f)

Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

void	InvertBit (UInt_t f)

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message. More...

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message. More...

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message. More...

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message. More...

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message. More...

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete. More...

Protected Types
enum	{ kNotGlobal = BIT(10) }

Protected Member Functions
void	ExtractFunctors (TString &formula)

void	PreProcessFormula (TString &formula)

void	ProcessFormula (TString &formula)

Bool_t	PrepareFormula (TString &formula)

void	ReplaceParamName (TString &formula, const TString &oldname, const TString &name)

void	DoAddParameter (const TString &name, Double_t value, bool processFormula)

void	DoSetParameters (const Double_t *p, Int_t size)

void	SetPredefinedParamNames ()

Double_t	DoEval (const Double_t x, const Double_t p=nullptr) const

Protected Member Functions inherited from TObject
void	MakeZombie ()

virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected). More...

Static Protected Member Functions
static Bool_t	IsOperator (const char c)

static Bool_t	IsBracket (const char c)

static Bool_t	IsFunctionNameChar (const char c)

static Bool_t	IsScientificNotation (const TString &formula, int ipos)

static Bool_t	IsHexadecimal (const TString &formula, int ipos)

Protected Attributes
std::list< TFormulaFunction >	fFuncs

std::map< TString, TFormulaVariable >	fVars

std::map< TString, Int_t, TFormulaParamOrder >	fParams
	list of variable names More...

std::map< TString, Double_t >	fConsts

std::map< TString, TString >	fFunctionsShortcuts

TString	fFormula

Int_t	fNdim

Int_t	fNpar

Int_t	fNumber

std::vector< TObject * >	fLinearParts

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Private Member Functions
void	InputFormulaIntoCling ()
	pointer to the lambda function More...

Bool_t	PrepareEvalMethod ()

void	FillDefaults ()

void	HandlePolN (TString &formula)

void	HandleParametrizedFunctions (TString &formula)

void	HandleExponentiation (TString &formula)

void	HandleLinear (TString &formula)

Bool_t	InitLambdaExpression (const char *formula)

Static Private Member Functions
static Bool_t	IsDefaultVariableName (const TString &name)

Private Attributes
TString	fClingInput

std::vector< Double_t >	fClingVariables
	input function passed to Cling More...

std::vector< Double_t >	fClingParameters
	cached variables More...

Bool_t	fReadyToExecute

Bool_t	fClingInitialized
	trasient to force initialization More...

Bool_t	fAllParametersSetted
	transient to force re-initialization More...

TMethodCall *	fMethod

TString	fClingName
	pointer to methocall More...

TInterpreter::CallFuncIFacePtr_t::Generic_t	fFuncPtr
	unique name passed to Cling to define the function ( double clingName(doublex, doublep) ) More...

void *	fLambdaPtr
	function pointer More...

Additional Inherited Members
Static Public Member Functions inherited from TObject
static Long_t	GetDtorOnly ()
	Return destructor only flag. More...

static void	SetDtorOnly (void *obj)
	Set destructor only flag. More...

static Bool_t	GetObjectStat ()
	Get status of object stat flag. More...

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable. More...

#include "inc/TFormula.h"

Inheritance diagram for TFormula:

[legend]

Member Enumeration Documentation

anonymous enum

protected

Enumerator
kNotGlobal

Definition at line 145 of file TFormula.h.

anonymous enum

Enumerator
kNormalized
kLinear
kLambda

Definition at line 151 of file TFormula.h.

Constructor & Destructor Documentation

TFormula::TFormula ( )

Referenced by ClassImp().

virtual TFormula::~TFormula ( )

virtual

Referenced by ClassImp().

TFormula::TFormula	(	const char *	name,
		const char *	formula = `""`,
		bool	addToGlobList = `true`
	)

TFormula::TFormula	(	const char *	name,
		const char *	formula,
		int	ndim,
		int	npar,
		bool	addToGlobList = `true`
	)

TFormula::TFormula ( const TFormula & formula )

Member Function Documentation

void TFormula::AddParameter	(	const TString &	name,
		Double_t	value = `0`
	)

inline

Definition at line 164 of file TFormula.h.

Referenced by TF1::AddParameter().

void TFormula::AddVariable	(	const TString &	name,
		Double_t	value = `0`
	)

Definition at line 1932 of file TFormula.cxx.

void TFormula::AddVariables	(	const TString *	vars,
		const Int_t	size
	)

Definition at line 1967 of file TFormula.cxx.

virtual void TFormula::Clear ( Option_t * option = "" )

virtual

Set name and title to empty strings ("").

Reimplemented from TNamed.

Referenced by ClassImp().

Int_t TFormula::Compile ( const char * expression = "" )

Referenced by ClassImp().

virtual void TFormula::Copy ( TObject & named ) const

virtual

Copy this to obj.

Reimplemented from TNamed.

Referenced by ClassImp(), and TF1::Copy().

void TFormula::DoAddParameter	(	const TString &	name,
		Double_t	value,
		bool	processFormula
	)

protected

Definition at line 2119 of file TFormula.cxx.

Double_t TFormula::DoEval	(	const Double_t *	x,
		const Double_t *	p = `nullptr`
	)		const

protected

Definition at line 2497 of file TFormula.cxx.

void TFormula::DoSetParameters	(	const Double_t *	p,
		Int_t	size
	)

protected

Definition at line 2334 of file TFormula.cxx.

Double_t TFormula::Eval ( Double_t x ) const

Referenced by ClassImp(), TF1::Eval(), TGDMLParse::Evaluate(), TLinearFitter::GetConfidenceIntervals(), TNeuron::GetDerivative(), TNeuron::GetValue(), and TMVA::StatDialogMVAEffs::UpdateSignificanceHists().

Double_t TFormula::Eval	(	Double_t	x,
		Double_t	y
	)		const

Double_t TFormula::Eval	(	Double_t	x,
		Double_t	y,
		Double_t	z
	)		const

Double_t TFormula::Eval	(	Double_t	x,
		Double_t	y,
		Double_t	z,
		Double_t	t
	)		const

Double_t TFormula::EvalPar	(	const Double_t *	x,
		const Double_t *	params = `0`
	)		const

Referenced by TLinearFitter::AddToDesign(), TLinearFitter::Chisquare(), TLinearFitter::CStep(), TF1::EvalPar(), and TLinearFitter::GetConfidenceIntervals().

void TFormula::ExtractFunctors ( TString & formula )

protected

Definition at line 1317 of file TFormula.cxx.

void TFormula::FillDefaults ( )

private

Definition at line 677 of file TFormula.cxx.

TString TFormula::GetExpFormula ( Option_t * option = "" ) const

Referenced by ClassImp(), and TF1::GetExpFormula().

const TObject* TFormula::GetLinearPart ( Int_t i ) const

Referenced by TLinearFitter::AddToDesign(), ClassImp(), and TF1::GetLinearPart().

Int_t TFormula::GetNdim ( ) const

inline

Definition at line 177 of file TFormula.h.

Referenced by TF1::TF1().

Int_t TFormula::GetNpar ( ) const

inline

Definition at line 178 of file TFormula.h.

Referenced by ClassImp(), TF1::Copy(), TFitEditor::DoFunction(), TLinearFitter::SetFormula(), and TF1::TF1().

Int_t TFormula::GetNumber ( ) const

inline

Definition at line 179 of file TFormula.h.

Referenced by TF1::GetNumber(), and TLinearFitter::SetFormula().

Double_t TFormula::GetParameter ( const char * name ) const

Referenced by ClassImp(), and TF1::GetParameter().

Double_t TFormula::GetParameter ( Int_t param ) const

Double_t* TFormula::GetParameters ( ) const

Referenced by TF1::GetParameters().

void TFormula::GetParameters ( Double_t * params ) const

const char* TFormula::GetParName ( Int_t ipar ) const

Referenced by ClassImp(), TLinearFitter::GetParameter(), TLinearFitter::GetParName(), and TF1::GetParName().

Int_t TFormula::GetParNumber ( const char * name ) const

Referenced by ClassImp(), and TF1::GetParNumber().

Double_t TFormula::GetVariable ( const char * name ) const

Definition at line 2061 of file TFormula.cxx.

Referenced by TF1::GetVariable().

TString TFormula::GetVarName ( Int_t ivar ) const

Definition at line 2088 of file TFormula.cxx.

Int_t TFormula::GetVarNumber ( const char * name ) const

Definition at line 2074 of file TFormula.cxx.

void TFormula::HandleExponentiation ( TString & formula )

private

Definition at line 1116 of file TFormula.cxx.

void TFormula::HandleLinear ( TString & formula )

private

Definition at line 1216 of file TFormula.cxx.

void TFormula::HandleParametrizedFunctions ( TString & formula )

private

Definition at line 868 of file TFormula.cxx.

void TFormula::HandlePolN ( TString & formula )

private

Definition at line 775 of file TFormula.cxx.

Bool_t TFormula::InitLambdaExpression ( const char * formula )

private

Definition at line 442 of file TFormula.cxx.

void TFormula::InputFormulaIntoCling ( )

private

pointer to the lambda function

Definition at line 666 of file TFormula.cxx.

Bool_t TFormula::IsBracket ( const char c )

staticprotected

Definition at line 162 of file TFormula.cxx.

Bool_t TFormula::IsDefaultVariableName ( const TString & name )

staticprivate

Definition at line 177 of file TFormula.cxx.

Bool_t TFormula::IsFunctionNameChar ( const char c )

staticprotected

Definition at line 172 of file TFormula.cxx.

Bool_t TFormula::IsHexadecimal	(	const TString &	formula,
		int	ipos
	)

staticprotected

Definition at line 194 of file TFormula.cxx.

Bool_t TFormula::IsLinear ( ) const

inline

Definition at line 190 of file TFormula.h.

Referenced by TF1::IsLinear().

Bool_t TFormula::IsOperator ( const char c )

staticprotected

Definition at line 151 of file TFormula.cxx.

Bool_t TFormula::IsScientificNotation	(	const TString &	formula,
		int	ipos
	)

staticprotected

Definition at line 183 of file TFormula.cxx.

Bool_t TFormula::IsValid ( ) const

inline

Definition at line 189 of file TFormula.h.

Referenced by TF1::IsValid(), and TF1Convolution::TF1Convolution().

TFormula& TFormula::operator= ( const TFormula & rhs )

Referenced by ClassImp().

bool TFormula::PrepareEvalMethod ( )

private

Definition at line 610 of file TFormula.cxx.

Bool_t TFormula::PrepareFormula ( TString & formula )

protected

Definition at line 1286 of file TFormula.cxx.

void TFormula::PreProcessFormula ( TString & formula )

protected

Definition at line 1264 of file TFormula.cxx.

void TFormula::Print ( Option_t * option = "" ) const

virtual

Print TNamed name and title.

Reimplemented from TNamed.

Referenced by ClassImp(), and TF1::Print().

void TFormula::ProcessFormula ( TString & formula )

protected

Definition at line 1516 of file TFormula.cxx.

void TFormula::ReplaceParamName	(	TString &	formula,
		const TString &	oldname,
		const TString &	name
	)

protected

Definition at line 2431 of file TFormula.cxx.

void TFormula::SetName ( const char * name )

virtual

Change (i.e.

set) the name of the TNamed. WARNING: if the object is a member of a THashTable or THashList container the container must be Rehash()'ed after SetName(). For example the list of objects in the current directory is a THashList.

Reimplemented from TNamed.

Definition at line 2015 of file TFormula.cxx.

void TFormula::SetParameter	(	const char *	name,
		Double_t	value
	)

Definition at line 2271 of file TFormula.cxx.

Referenced by ClassImp(), and TF1::SetParameter().

void TFormula::SetParameter	(	Int_t	param,
		Double_t	value
	)

Definition at line 2377 of file TFormula.cxx.

void TFormula::SetParameters ( const Double_t * params )

Referenced by ClassImp(), TLinearFitter::CStep(), TLinearFitter::Eval(), and TF1::SetParameters().

void TFormula::SetParameters	(	Double_t	p0,
		Double_t	p1,
		Double_t	p2 = `0`,
		Double_t	p3 = `0`,
		Double_t	p4 = `0`,
		Double_t	p5 = `0`,
		Double_t	p6 = `0`,
		Double_t	p7 = `0`,
		Double_t	p8 = `0`,
		Double_t	p9 = `0`,
		Double_t	p10 = `0`
	)

void TFormula::SetParName	(	Int_t	ipar,
		const char *	name
	)

Referenced by ClassImp(), and TF1::SetParName().

void TFormula::SetParNames	(	const char *	name0 = `"p0"`,
		const char *	name1 = `"p1"`,
		const char *	name2 = `"p2"`,
		const char *	name3 = `"p3"`,
		const char *	name4 = `"p4"`,
		const char *	name5 = `"p5"`,
		const char *	name6 = `"p6"`,
		const char *	name7 = `"p7"`,
		const char *	name8 = `"p8"`,
		const char *	name9 = `"p9"`,
		const char *	name10 = `"p10"`
	)

Referenced by ClassImp(), and TF1::SetParNames().

void TFormula::SetPredefinedParamNames ( )

protected

Definition at line 1858 of file TFormula.cxx.

void TFormula::SetVariable	(	const TString &	name,
		Double_t	value
	)

Definition at line 2105 of file TFormula.cxx.

void TFormula::SetVariables	(	const std::pair< TString, Double_t > *	vars,
		const Int_t	size
	)

Definition at line 2037 of file TFormula.cxx.

Member Data Documentation

Bool_t TFormula::fAllParametersSetted

private

transient to force re-initialization

Definition at line 100 of file TFormula.h.

Bool_t TFormula::fClingInitialized

private

trasient to force initialization

Definition at line 99 of file TFormula.h.

TString TFormula::fClingInput

private

Definition at line 95 of file TFormula.h.

TString TFormula::fClingName

private

pointer to methocall

Definition at line 102 of file TFormula.h.

std::vector<Double_t> TFormula::fClingParameters

private

cached variables

Definition at line 97 of file TFormula.h.

std::vector<Double_t> TFormula::fClingVariables

private

input function passed to Cling

Definition at line 96 of file TFormula.h.

std::map<TString,Double_t> TFormula::fConsts

protected

Definition at line 121 of file TFormula.h.

TString TFormula::fFormula

protected

Definition at line 123 of file TFormula.h.

Referenced by TF1::Copy().

TInterpreter::CallFuncIFacePtr_t::Generic_t TFormula::fFuncPtr

private

unique name passed to Cling to define the function ( double clingName(double*x, double*p) )

Definition at line 104 of file TFormula.h.

std::list<TFormulaFunction> TFormula::fFuncs

protected

Definition at line 118 of file TFormula.h.

std::map<TString,TString> TFormula::fFunctionsShortcuts

protected

Definition at line 122 of file TFormula.h.

void* TFormula::fLambdaPtr

private

function pointer

Definition at line 105 of file TFormula.h.

std::vector<TObject*> TFormula::fLinearParts

protected

Definition at line 127 of file TFormula.h.

TMethodCall* TFormula::fMethod

private

Definition at line 101 of file TFormula.h.

Int_t TFormula::fNdim

protected

Definition at line 124 of file TFormula.h.

Int_t TFormula::fNpar

protected

Definition at line 125 of file TFormula.h.

Int_t TFormula::fNumber

protected

Definition at line 126 of file TFormula.h.

std::map<TString,Int_t,TFormulaParamOrder> TFormula::fParams

protected

list of variable names

Definition at line 120 of file TFormula.h.

Bool_t TFormula::fReadyToExecute

private

Definition at line 98 of file TFormula.h.

std::map<TString,TFormulaVariable> TFormula::fVars

protected

Definition at line 119 of file TFormula.h.

Collaboration diagram for TFormula:

[legend]

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

hist/hist/inc/v5/TFormula.h
hist/hist/src/TFormula.cxx

Example of valid expressions:

Public Types

Public Member Functions

Protected Types

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Static Protected Member Functions

Protected Attributes

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Additional Inherited Members

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation