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Reference Guide
TFormulaPrimitive.h
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1 // @(#)root/hist:$Id$
2 // Author: Marian Ivanov, 2005
3 
4 /*************************************************************************
5 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11 // ---------------------------------- TFormulaPrimitive.h
12 
13 #ifndef ROOT_v5_TFormulaPrimitive
14 #define ROOT_v5_TFormulaPrimitive
15 
16 
17 
18 //////////////////////////////////////////////////////////////////////////
19 // //
20 // TFormulaPrimitive //
21 // //
22 // The formula primitive base class //
23 // //
24 //////////////////////////////////////////////////////////////////////////
25 
26 #include "TNamed.h"
27 #include "TBits.h"
28 #include "TObjArray.h"
29 
30 namespace ROOT {
31 
32  namespace v5 {
33 
34 class TFormula;
35 
36 class TFormulaPrimitive : public TNamed
37 {
38  friend class ROOT::v5::TFormula;
39 public:
40  typedef Double_t (*GenFuncG)(const Double_t*,const Double_t*);
41  typedef Double_t (*GenFunc0)();
45  typedef Double_t (TObject::*TFuncG)(const Double_t*,const Double_t*) const;
46  typedef Double_t (TObject::*TFunc0)() const;
47  typedef Double_t (TObject::*TFunc10)(Double_t) const;
50 protected:
51  static TObjArray * fgListOfFunction; //!list of global primitive formulas
52  static Int_t BuildBasicFormulas(); //build list of basic formulas
53  union {
54  GenFuncG fFuncG; //!pointer to the TFormula generic function
55  GenFunc0 fFunc0; //!pointer to the function
56  GenFunc10 fFunc10; //!pointer to the function
57  GenFunc110 fFunc110; //!pointer to the function
58  GenFunc1110 fFunc1110; //!pointer to the function
59  TFuncG fTFuncG; //!pointer to the TFormula generic function
60  TFunc0 fTFunc0; //! pointer to member function
61  TFunc10 fTFunc10; //! pointer to member function
62  TFunc110 fTFunc110; //! pointer to member function
63  TFunc1110 fTFunc1110; //! pointer to member function
64  };
65  Int_t fType; //type of the function
66  Int_t fNArguments; //number of arguments
67  Int_t fNParameters; //number of parameters
68  Bool_t fIsStatic; // indication if the function is static
69 private:
70  TFormulaPrimitive(const TFormulaPrimitive&); // Not implemented
71  TFormulaPrimitive& operator=(const TFormulaPrimitive&); // Not implemented
72 public:
74  TFormulaPrimitive(const char *name,const char *formula, GenFunc0 fpointer);
75  TFormulaPrimitive(const char *name,const char *formula, GenFunc10 fpointer);
76  TFormulaPrimitive(const char *name,const char *formula, GenFunc110 fpointer);
77  TFormulaPrimitive(const char *name,const char *formula, GenFunc1110 fpointer);
78  TFormulaPrimitive(const char *name,const char *formula, GenFuncG fpointer,Int_t npar);
79  TFormulaPrimitive(const char *name,const char *formula, TFunc0 fpointer);
80  TFormulaPrimitive(const char *name,const char *formula, TFunc10 fpointer);
81  TFormulaPrimitive(const char *name,const char *formula, TFunc110 fpointer);
82  TFormulaPrimitive(const char *name,const char *formula, TFunc1110 fpointer);
83  TFormulaPrimitive(const char *name,const char *formula, TFuncG fpointer);
84  static Int_t AddFormula(TFormulaPrimitive * formula);
85  static TFormulaPrimitive* FindFormula(const char* name);
86  static TFormulaPrimitive* FindFormula(const char* name, const char *args);
87  static TFormulaPrimitive* FindFormula(const char* name, UInt_t nargs);
88  Double_t Eval(Double_t* x); //eval primitive function
89  Double_t Eval(TObject *o, Double_t *x); //eval member function
90  Double_t Eval(Double_t *x, Double_t *param); //eval primitive parametric function
91 
92  ClassDef(ROOT::v5::TFormulaPrimitive,0) //The primitive formula
93 };
94 
95  } // end namespace v5
96 
97 } // end namespace ROOT
98 
99 
100 #endif
An array of TObjects.
Definition: TObjArray.h:37
Returns the available number of logical cores.
Definition: StringConv.hxx:21
Double_t(TObject::* TFunc110)(Double_t, Double_t) const
GenFunc10 fFunc10
pointer to the function
Double_t(* GenFuncG)(const Double_t *, const Double_t *)
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
TFunc110 fTFunc110
pointer to member function
Double_t(* GenFunc1110)(Double_t, Double_t, Double_t)
Double_t(TObject::* TFunc0)() const
TFunc0 fTFunc0
pointer to the TFormula generic function
TFormulaPrimitive & operator=(const TFormulaPrimitive &)
GenFunc0 fFunc0
pointer to the TFormula generic function
The Formula Primitive class.
TFunc10 fTFunc10
pointer to member function
Double_t x[n]
Definition: legend1.C:17
#define ClassDef(name, id)
Definition: Rtypes.h:326
The TNamed class is the base class for all named ROOT classes.
Definition: TNamed.h:29
TFunc1110 fTFunc1110
pointer to member function
Double_t(* GenFunc110)(Double_t, Double_t)
Double_t Eval(Double_t *x)
Eval primitive function at point x.
Double_t(TObject::* TFunc10)(Double_t) const
The Formula class.
Definition: TFormula.h:83
unsigned int UInt_t
Definition: RtypesCore.h:42
Double_t(* GenFunc10)(Double_t)
double Double_t
Definition: RtypesCore.h:55
The FORMULA class (ROOT version 5)
Definition: TFormula.h:65
Double_t(TObject::* TFunc1110)(Double_t, Double_t, Double_t) const
static Int_t AddFormula(TFormulaPrimitive *formula)
Add formula to the list of primitive formulas.
static Int_t BuildBasicFormulas()
list of global primitive formulas
Mother of all ROOT objects.
Definition: TObject.h:37
Double_t(TObject::* TFuncG)(const Double_t *, const Double_t *) const
TFormulaPrimitive()
Default constructor.
GenFunc110 fFunc110
pointer to the function
static TObjArray * fgListOfFunction
char name[80]
Definition: TGX11.cxx:109
static TFormulaPrimitive * FindFormula(const char *name)
Find the formula in the list of formulas.
TFuncG fTFuncG
pointer to the function
GenFunc1110 fFunc1110
pointer to the function