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ROOT 6.10/09 Reference Guide |
The Formula 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.
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 0gausn(0)
is a substitute for [0]*exp(-0.5*((x-[1])/[2])**2)/(sqrt(2*pi)*[2]))
and (0) means start numbering parameters at 0expo(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<0.5 || x>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 83 of file TFormula.h.
Public Types | |
enum | { kNotGlobal = BIT(10), kNormalized = BIT(14), kLinear = BIT(16), kLambda = BIT(17) } |
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enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
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) } |
Public Member Functions | |
TFormula () | |
TFormula (const char *name, const char *formula="", bool addToGlobList=true) | |
TFormula (const char *name, const char *formula, int ndim, int npar, bool addToGlobList=true) | |
Constructor from a full compileable C++ expression. More... | |
TFormula (const TFormula &formula) | |
virtual | ~TFormula () |
void | AddParameter (const TString &name, Double_t value=0) |
void | AddVariable (const TString &name, Double_t value=0) |
Adds variable to known variables, and reprocess formula. More... | |
void | AddVariables (const TString *vars, const Int_t size) |
Adds multiple variables. More... | |
virtual void | Clear (Option_t *option="") |
Clear the formula setting expression to empty and reset the variables and parameters containers. More... | |
Int_t | Compile (const char *expression="") |
Compile the given expression with Cling backward compatibility method to be used in combination with the empty constructor if no expression is given , the current stored formula (retrieved with GetExpFormula()) or the title is used. More... | |
virtual void | Copy (TObject &f1) const |
Copy this to obj. More... | |
Double_t | Eval (Double_t x) const |
Sets first variable (e.g. x) and evaluate formula. More... | |
Double_t | Eval (Double_t x, Double_t y) const |
Sets first 2 variables (e.g. x and y) and evaluate formula. More... | |
Double_t | Eval (Double_t x, Double_t y, Double_t z) const |
Sets first 3 variables (e.g. x, y, z) and evaluate formula. More... | |
Double_t | Eval (Double_t x, Double_t y, Double_t z, Double_t t) const |
Sets first 4 variables (e.g. x, y, z, t) and evaluate formula. More... | |
Double_t | EvalPar (const Double_t *x, const Double_t *params=0) const |
TString | GetExpFormula (Option_t *option="") const |
Return the expression formula. More... | |
const TObject * | GetLinearPart (Int_t i) const |
Return linear part. More... | |
Int_t | GetNdim () const |
Int_t | GetNpar () const |
Int_t | GetNumber () const |
Double_t | GetParameter (const char *name) const |
Returns parameter value given by string. More... | |
Double_t | GetParameter (Int_t param) const |
Return parameter value given by integer. More... | |
Double_t * | GetParameters () const |
void | GetParameters (Double_t *params) const |
const char * | GetParName (Int_t ipar) const |
Return parameter name given by integer. More... | |
Int_t | GetParNumber (const char *name) const |
Return parameter index given a name (return -1 for not existing parameters) non need to print an error. More... | |
Double_t | GetVariable (const char *name) const |
Returns variable value. More... | |
TString | GetVarName (Int_t ivar) const |
Returns variable name given its position in the array. More... | |
Int_t | GetVarNumber (const char *name) const |
Returns variable number (positon in array) given its name. More... | |
Bool_t | IsLinear () const |
Bool_t | IsValid () const |
TFormula & | operator= (const TFormula &rhs) |
= operator. More... | |
void | Print (Option_t *option="") const |
Print the formula and its attributes. More... | |
void | SetName (const char *name) |
Set the name of the formula. More... | |
void | SetParameter (const char *name, Double_t value) |
Sets parameter value. More... | |
void | SetParameter (Int_t param, Double_t value) |
Set a parameter given a parameter index The parameter index is by default the aphabetic order given to the parameters apart if the users has defined explicitly the parameter names. More... | |
void | SetParameters (const Double_t *params) |
Set a vector of parameters value. More... | |
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) |
Set a list of parameters. More... | |
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) |
Sets variable value. More... | |
void | SetVariables (const std::pair< TString, Double_t > *vars, const Int_t size) |
Sets multiple variables. More... | |
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TNamed () | |
TNamed (const char *name, const char *title) | |
TNamed (const TString &name, const TString &title) | |
TNamed (const TNamed &named) | |
TNamed copy ctor. 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 | ls (Option_t *option="") const |
List TNamed name and title. More... | |
TNamed & | operator= (const TNamed &rhs) |
TNamed assignment operator. More... | |
virtual void | SetNameTitle (const char *name, const char *title) |
Set all the TNamed parameters (name and title). More... | |
virtual void | SetTitle (const char *title="") |
Set the title of the TNamed. More... | |
virtual Int_t | Sizeof () const |
Return size of the TNamed part of the TObject. More... | |
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TObject () | |
TObject constructor. More... | |
TObject (const TObject &object) | |
TObject copy ctor. More... | |
virtual | ~TObject () |
TObject destructor. 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... | |
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 selected pad for instance with: gROOT->SetSelectedPad(gPad) . More... | |
virtual void | Dump () const |
Dump contents of object on stdout. More... | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. 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 void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. 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 const char * | GetIconName () const |
Returns mime type name of object. More... | |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). More... | |
virtual Option_t * | GetOption () const |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. More... | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. More... | |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. 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... | |
void | InvertBit (UInt_t f) |
virtual Bool_t | IsEqual (const TObject *obj) const |
Default equal comparison (objects are equal if they have the same address in memory). More... | |
virtual Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
Bool_t | IsOnHeap () const |
Bool_t | IsZombie () const |
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... | |
virtual Bool_t | Notify () |
This method must be overridden to handle object notification. More... | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. More... | |
void | operator delete (void *ptr) |
Operator delete. More... | |
void | operator delete[] (void *ptr) |
Operator delete []. More... | |
void * | operator new (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz) |
void * | operator new[] (size_t sz, void *vp) |
TObject & | operator= (const TObject &rhs) |
TObject assignment operator. 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... | |
void | ResetBit (UInt_t f) |
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... | |
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) |
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 | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. More... | |
Bool_t | TestBit (UInt_t f) const |
Int_t | TestBits (UInt_t f) const |
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 void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. 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... | |
Protected Member Functions | |
void | DoAddParameter (const TString &name, Double_t value, bool processFormula) |
Adds parameter to known parameters. More... | |
Double_t | DoEval (const Double_t *x, const Double_t *p=nullptr) const |
Evaluate formula. More... | |
void | DoSetParameters (const Double_t *p, Int_t size) |
void | ExtractFunctors (TString &formula) |
Extracts functors from formula, and put them in fFuncs. More... | |
Bool_t | PrepareFormula (TString &formula) |
prepare the formula to be executed normally is called with fFormula More... | |
void | PreProcessFormula (TString &formula) |
Preprocessing of formula Replace all ** by ^, and removes spaces. More... | |
void | ProcessFormula (TString &formula) |
Iterates through funtors in fFuncs and performs the appropriate action. More... | |
void | ReplaceParamName (TString &formula, const TString &oldname, const TString &name) |
Replace in Formula expression the parameter name. More... | |
void | SetPredefinedParamNames () |
Set parameter names only in case of pre-defined functions. More... | |
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virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). More... | |
void | MakeZombie () |
Static Protected Member Functions | |
static Bool_t | IsAParameterName (const TString &formula, int ipos) |
static Bool_t | IsBracket (const char c) |
static Bool_t | IsFunctionNameChar (const char c) |
static Bool_t | IsHexadecimal (const TString &formula, int ipos) |
static Bool_t | IsOperator (const char c) |
static Bool_t | IsScientificNotation (const TString &formula, int ipos) |
Protected Attributes | |
std::map< TString, Double_t > | fConsts |
TString | fFormula |
std::list< TFormulaFunction > | fFuncs |
std::map< TString, TString > | fFunctionsShortcuts |
std::vector< TObject * > | fLinearParts |
Int_t | fNdim |
Int_t | fNpar |
Int_t | fNumber |
std::map< TString, Int_t, TFormulaParamOrder > | fParams |
list of variable names More... | |
std::map< TString, TFormulaVariable > | fVars |
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TString | fName |
TString | fTitle |
Private Member Functions | |
void | FillDefaults () |
Fill structures with default variables, constants and function shortcuts. More... | |
void | HandleExponentiation (TString &formula) |
Handling exponentiation Can handle multiple carets, eg. More... | |
void | HandleLinear (TString &formula) |
Handle linear functions defined with the operator ++. More... | |
void | HandleParametrizedFunctions (TString &formula) |
Handling parametrized functions Function can be normalized, and have different variable then x. More... | |
void | HandlePolN (TString &formula) |
Handling polN If before 'pol' exist any name, this name will be treated as variable used in polynomial eg. More... | |
Bool_t | InitLambdaExpression (const char *formula) |
void | InputFormulaIntoCling () |
pointer to the lambda function More... | |
Bool_t | PrepareEvalMethod () |
Sets TMethodCall to function inside Cling environment. More... | |
Static Private Member Functions | |
static Bool_t | IsDefaultVariableName (const TString &name) |
Private Attributes | |
Bool_t | fAllParametersSetted |
transient to force re-initialization More... | |
Bool_t | fClingInitialized |
trasient to force initialization More... | |
TString | fClingInput |
TString | fClingName |
pointer to methocall More... | |
std::vector< Double_t > | fClingParameters |
cached variables More... | |
std::vector< Double_t > | fClingVariables |
input function passed to Cling More... | |
TInterpreter::CallFuncIFacePtr_t::Generic_t | fFuncPtr |
unique name passed to Cling to define the function ( double clingName(double*x, double*p) ) More... | |
void * | fLambdaPtr |
function pointer More... | |
TMethodCall * | fMethod |
Bool_t | fReadyToExecute |
Additional Inherited Members | |
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static Long_t | GetDtorOnly () |
Return destructor only flag. More... | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. More... | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. More... | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. More... | |
#include "inc/TFormula.h"
anonymous enum |
Enumerator | |
---|---|
kNotGlobal | |
kNormalized | |
kLinear | |
kLambda |
Definition at line 142 of file TFormula.h.
TFormula::TFormula | ( | ) |
Definition at line 265 of file TFormula.cxx.
|
virtual |
Definition at line 292 of file TFormula.cxx.
TFormula::TFormula | ( | const char * | name, |
const char * | formula = "" , |
||
bool | addToGlobList = true |
||
) |
Definition at line 313 of file TFormula.cxx.
TFormula::TFormula | ( | const char * | name, |
const char * | formula, | ||
int | ndim, | ||
int | npar, | ||
bool | addToGlobList = true |
||
) |
Constructor from a full compileable C++ expression.
Definition at line 356 of file TFormula.cxx.
TFormula::TFormula | ( | const TFormula & | formula | ) |
Definition at line 402 of file TFormula.cxx.
Definition at line 156 of file TFormula.h.
Adds variable to known variables, and reprocess formula.
Definition at line 2059 of file TFormula.cxx.
Adds multiple variables.
First argument is an array of pairs<TString,Double>, where first argument is name of variable, second argument represents value. size - number of variables passed in first argument
Definition at line 2098 of file TFormula.cxx.
Clear the formula setting expression to empty and reset the variables and parameters containers.
Reimplemented from TNamed.
Definition at line 621 of file TFormula.cxx.
Int_t TFormula::Compile | ( | const char * | expression = "" | ) |
Compile the given expression with Cling backward compatibility method to be used in combination with the empty constructor if no expression is given , the current stored formula (retrieved with GetExpFormula()) or the title is used.
return 0 if the formula compilation is successfull
Definition at line 510 of file TFormula.cxx.
|
protected |
Adds parameter to known parameters.
User should use SetParameter, because parameters are added during initialization part, and after that adding new will be pointless.
Definition at line 2250 of file TFormula.cxx.
Evaluate formula.
If formula is not ready to execute(missing parameters/variables), print these which are not known. If parameter has default value, and has not been setted, appropriate warning is shown.
Definition at line 2655 of file TFormula.cxx.
Definition at line 2467 of file TFormula.cxx.
Sets first variable (e.g. x) and evaluate formula.
Definition at line 2642 of file TFormula.cxx.
Sets first 2 variables (e.g. x and y) and evaluate formula.
Definition at line 2633 of file TFormula.cxx.
Sets first 3 variables (e.g. x, y, z) and evaluate formula.
Definition at line 2624 of file TFormula.cxx.
Sets first 4 variables (e.g. x, y, z, t) and evaluate formula.
Definition at line 2615 of file TFormula.cxx.
Definition at line 2607 of file TFormula.cxx.
Extracts functors from formula, and put them in fFuncs.
Simple grammar:
Definition at line 1410 of file TFormula.cxx.
|
private |
Fill structures with default variables, constants and function shortcuts.
Definition at line 726 of file TFormula.cxx.
Return the expression formula.
Definition at line 2712 of file TFormula.cxx.
Return linear part.
Definition at line 2043 of file TFormula.cxx.
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inline |
Definition at line 169 of file TFormula.h.
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inline |
Definition at line 170 of file TFormula.h.
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inline |
Definition at line 171 of file TFormula.h.
Double_t TFormula::GetParameter | ( | const char * | name | ) | const |
Returns parameter value given by string.
Definition at line 2344 of file TFormula.cxx.
Return parameter value given by integer.
Definition at line 2358 of file TFormula.cxx.
Double_t * TFormula::GetParameters | ( | ) | const |
Definition at line 2384 of file TFormula.cxx.
Definition at line 2391 of file TFormula.cxx.
const char * TFormula::GetParName | ( | Int_t | ipar | ) | const |
Return parameter name given by integer.
Definition at line 2370 of file TFormula.cxx.
Int_t TFormula::GetParNumber | ( | const char * | name | ) | const |
Return parameter index given a name (return -1 for not existing parameters) non need to print an error.
Definition at line 2331 of file TFormula.cxx.
Double_t TFormula::GetVariable | ( | const char * | name | ) | const |
Returns variable value.
Definition at line 2190 of file TFormula.cxx.
Returns variable name given its position in the array.
Definition at line 2218 of file TFormula.cxx.
Int_t TFormula::GetVarNumber | ( | const char * | name | ) | const |
Returns variable number (positon in array) given its name.
Definition at line 2204 of file TFormula.cxx.
Handling exponentiation Can handle multiple carets, eg.
2^3^4 will be treated like 2^(3^4)
Definition at line 1199 of file TFormula.cxx.
Handle linear functions defined with the operator ++.
Definition at line 1296 of file TFormula.cxx.
Handling parametrized functions Function can be normalized, and have different variable then x.
Variables should be placed in brackets after function name. No brackets are treated like [x]. Normalized function has char 'n' after name, eg. gausn[var](0) will be replaced with [0]*exp(-0.5*((var-[1])/[2])^2)/(sqrt(2*pi)*[2])
Adding function is easy, just follow these rules:
Definition at line 940 of file TFormula.cxx.
Handling polN If before 'pol' exist any name, this name will be treated as variable used in polynomial eg.
varpol2(5) will be replaced with: [5] + [6]*var + [7]*var^2 Empty name is treated like variable x.
Definition at line 828 of file TFormula.cxx.
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private |
Definition at line 469 of file TFormula.cxx.
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private |
pointer to the lambda function
Inputs formula, transfered to C++ code into Cling.
Definition at line 713 of file TFormula.cxx.
Definition at line 211 of file TFormula.cxx.
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staticprotected |
Definition at line 153 of file TFormula.cxx.
Definition at line 170 of file TFormula.cxx.
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staticprotected |
Definition at line 164 of file TFormula.cxx.
Definition at line 188 of file TFormula.cxx.
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inline |
Definition at line 182 of file TFormula.h.
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staticprotected |
Definition at line 141 of file TFormula.cxx.
Definition at line 176 of file TFormula.cxx.
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inline |
Definition at line 181 of file TFormula.h.
= operator.
Definition at line 459 of file TFormula.cxx.
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private |
Sets TMethodCall to function inside Cling environment.
TFormula uses it to execute function. After call, TFormula should be ready to evaluate formula.
Definition at line 658 of file TFormula.cxx.
prepare the formula to be executed normally is called with fFormula
Definition at line 1371 of file TFormula.cxx.
Preprocessing of formula Replace all ** by ^, and removes spaces.
Handle also parametrized functions like polN,gaus,expo,landau and exponentiation. Similar functionality should be added here.
Definition at line 1351 of file TFormula.cxx.
Print the formula and its attributes.
Reimplemented from TNamed.
Definition at line 2785 of file TFormula.cxx.
Iterates through funtors in fFuncs and performs the appropriate action.
If functor has 0 arguments (has only name) can be:
Definition at line 1637 of file TFormula.cxx.
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Replace in Formula expression the parameter name.
Definition at line 2579 of file TFormula.cxx.
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Set the name of the formula.
We need to allow the list of function to properly handle the hashes.
Reimplemented from TNamed.
Definition at line 2142 of file TFormula.cxx.
Sets parameter value.
Definition at line 2405 of file TFormula.cxx.
Set a parameter given a parameter index The parameter index is by default the aphabetic order given to the parameters apart if the users has defined explicitly the parameter names.
Definition at line 2521 of file TFormula.cxx.
Set a vector of parameters value.
Order in the vector is by default the aphabetic order given to the parameters apart if the users has defined explicitly the parameter names
Definition at line 2489 of file TFormula.cxx.
void TFormula::SetParameters | ( | Double_t | p0, |
Double_t | p1, | ||
Double_t | p2 = 0 , |
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Double_t | p3 = 0 , |
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Double_t | p4 = 0 , |
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Double_t | p5 = 0 , |
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Double_t | p6 = 0 , |
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Double_t | p7 = 0 , |
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Double_t | p8 = 0 , |
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Double_t | p9 = 0 , |
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Double_t | p10 = 0 |
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Set a list of parameters.
The order is by default the aphabetic order given to the parameters apart if the users has defined explicitly the parameter names
Definition at line 2499 of file TFormula.cxx.
Definition at line 2549 of file TFormula.cxx.
void TFormula::SetParNames | ( | const char * | name0 = "p0" , |
const char * | name1 = "p1" , |
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const char * | name2 = "p2" , |
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const char * | name3 = "p3" , |
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const char * | name4 = "p4" , |
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const char * | name5 = "p5" , |
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const char * | name6 = "p6" , |
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const char * | name7 = "p7" , |
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const char * | name8 = "p8" , |
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const char * | name9 = "p9" , |
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const char * | name10 = "p10" |
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Definition at line 2531 of file TFormula.cxx.
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Set parameter names only in case of pre-defined functions.
Definition at line 1971 of file TFormula.cxx.
Sets variable value.
Definition at line 2234 of file TFormula.cxx.
Sets multiple variables.
First argument is an array of pairs<TString,Double>, where first argument is name of variable, second argument represents value. size - number of variables passed in first argument
Definition at line 2170 of file TFormula.cxx.
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transient to force re-initialization
Definition at line 94 of file TFormula.h.
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trasient to force initialization
Definition at line 93 of file TFormula.h.
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Definition at line 89 of file TFormula.h.
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pointer to methocall
Definition at line 96 of file TFormula.h.
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cached variables
Definition at line 91 of file TFormula.h.
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input function passed to Cling
Definition at line 90 of file TFormula.h.
Definition at line 115 of file TFormula.h.
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Definition at line 117 of file TFormula.h.
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unique name passed to Cling to define the function ( double clingName(double*x, double*p) )
Definition at line 98 of file TFormula.h.
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Definition at line 112 of file TFormula.h.
Definition at line 116 of file TFormula.h.
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function pointer
Definition at line 99 of file TFormula.h.
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Definition at line 121 of file TFormula.h.
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Definition at line 95 of file TFormula.h.
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Definition at line 118 of file TFormula.h.
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Definition at line 119 of file TFormula.h.
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Definition at line 120 of file TFormula.h.
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list of variable names
Definition at line 114 of file TFormula.h.
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Definition at line 92 of file TFormula.h.
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Definition at line 113 of file TFormula.h.