/usr/include/root/TFormula.h is in libroot-hist-dev 5.34.19+dfsg-1.2.
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// Author: Nicolas Brun 19/08/95
/*************************************************************************
* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
// ---------------------------------- Formula.h
#ifndef ROOT_TFormula
#define ROOT_TFormula
//////////////////////////////////////////////////////////////////////////
// //
// TFormula //
// //
// The formula base class f(x,y,z,par) //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TNamed
#include "TNamed.h"
#endif
#ifndef ROOT_TBits
#include "TBits.h"
#endif
#ifndef ROOT_TObjArray
#include "TObjArray.h"
#endif
class TFormulaPrimitive;
const Int_t kMAXFOUND = 500;
const Int_t kTFOperMask = 0x7fffff;
const UChar_t kTFOperShift = 23;
class TOperOffset {
friend class TFormula;
public:
enum {
kVariable = 0,
kParameter = 1,
kConstant = 2
};
TOperOffset();
protected:
Short_t fType0; // type of operand 0
Short_t fOffset0; // offset of operand 0
Short_t fType1; // type of operand 1
Short_t fOffset1; // offset of operand 1
Short_t fType2; // type of operand 2
Short_t fOffset2; // offset of operand 2
Short_t fType3; // type of operand 3
Short_t fOffset3; // offset of operand 3
Short_t fToJump; // where to jump in case of optimized boolen
Short_t fOldAction; // temporary variable used during optimization
};
class TFormula : public TNamed {
protected:
typedef Double_t (TObject::*TFuncG)(const Double_t*,const Double_t*) const;
Int_t fNdim; //Dimension of function (1=1-Dim, 2=2-Dim,etc)
Int_t fNpar; //Number of parameters
Int_t fNoper; //Number of operators
Int_t fNconst; //Number of constants
Int_t fNumber; //formula number identifier
Int_t fNval; //Number of different variables in expression
Int_t fNstring; //Number of different constants character strings
TString *fExpr; //[fNoper] List of expressions
private:
Int_t *fOper; //[fNoper] List of operators. (See documentation for changes made at version 7)
protected:
Double_t *fConst; //[fNconst] Array of fNconst formula constants
Double_t *fParams; //[fNpar] Array of fNpar parameters
TString *fNames; //[fNpar] Array of parameter names
TObjArray fFunctions; //Array of function calls to make
TObjArray fLinearParts; //Linear parts if the formula is linear (contains '|' or "++")
TBits fAlreadyFound; //! cache for information
// Optimized expression
Int_t fNOperOptimized; //!Number of operators after optimization
TString *fExprOptimized; //![fNOperOptimized] List of expressions
Int_t *fOperOptimized; //![fNOperOptimized] List of operators. (See documentation for changes made at version 7)
TOperOffset *fOperOffset; //![fNOperOptimized] Offsets of operrands
TFormulaPrimitive **fPredefined; //![fNPar] predefined function
TFuncG fOptimal; //!pointer to optimal function
Int_t PreCompile();
virtual Bool_t CheckOperands(Int_t operation, Int_t &err);
virtual Bool_t CheckOperands(Int_t leftoperand, Int_t rightoperartion, Int_t &err);
virtual Bool_t StringToNumber(Int_t code);
void MakePrimitive(const char *expr, Int_t pos);
inline Int_t *GetOper() const { return fOper; }
inline Short_t GetAction(Int_t code) const { return fOper[code] >> kTFOperShift; }
inline Int_t GetActionParam(Int_t code) const { return fOper[code] & kTFOperMask; }
inline void SetAction(Int_t code, Int_t value, Int_t param = 0) {
fOper[code] = (value) << kTFOperShift;
fOper[code] += param;
}
inline Int_t *GetOperOptimized() const { return fOperOptimized; }
inline Short_t GetActionOptimized(Int_t code) const { return fOperOptimized[code] >> kTFOperShift; }
inline Int_t GetActionParamOptimized(Int_t code) const { return fOperOptimized[code] & kTFOperMask; }
inline void SetActionOptimized(Int_t code, Int_t value, Int_t param = 0) {
fOperOptimized[code] = (value) << kTFOperShift;
fOperOptimized[code] += param;
}
void ClearFormula(Option_t *option="");
virtual Bool_t IsString(Int_t oper) const;
virtual void Convert(UInt_t fromVersion);
//
// Functions - used for formula evaluation
Double_t EvalParFast(const Double_t *x, const Double_t *params);
Double_t EvalPrimitive(const Double_t *x, const Double_t *params);
Double_t EvalPrimitive0(const Double_t *x, const Double_t *params);
Double_t EvalPrimitive1(const Double_t *x, const Double_t *params);
Double_t EvalPrimitive2(const Double_t *x, const Double_t *params);
Double_t EvalPrimitive3(const Double_t *x, const Double_t *params);
Double_t EvalPrimitive4(const Double_t *x, const Double_t *params);
// Action code for Version 6 and above.
enum {
kEnd = 0,
kAdd = 1, kSubstract = 2,
kMultiply = 3, kDivide = 4,
kModulo = 5,
kcos = 10, ksin = 11 , ktan = 12,
kacos = 13, kasin = 14 , katan = 15,
katan2 = 16,
kfmod = 17,
kpow = 20, ksq = 21, ksqrt = 22,
kstrstr = 23,
kmin = 24, kmax = 25,
klog = 30, kexp = 31, klog10 = 32,
kpi = 40,
kabs = 41 , ksign= 42,
kint = 43 ,
kSignInv= 44 ,
krndm = 50 ,
kAnd = 60, kOr = 61,
kEqual = 62, kNotEqual = 63,
kLess = 64, kGreater = 65,
kLessThan = 66, kGreaterThan = 67,
kNot = 68,
kcosh = 70 , ksinh = 71, ktanh = 72,
kacosh = 73 , kasinh = 74, katanh = 75,
kStringEqual = 76, kStringNotEqual = 77,
kBitAnd = 78, kBitOr = 79,
kLeftShift = 80, kRightShift = 81,
kJumpIf = 82, kJump = 83,
kexpo = 100 , kxexpo = 100, kyexpo = 101, kzexpo = 102, kxyexpo = 105,
kgaus = 110 , kxgaus = 110, kygaus = 111, kzgaus = 112, kxygaus = 115,
klandau = 120 , kxlandau = 120, kylandau = 121, kzlandau = 122, kxylandau = 125,
kpol = 130 , kxpol = 130, kypol = 131, kzpol = 132,
kParameter = 140,
kConstant = 141,
kBoolOptimize = 142,
kStringConst = 143,
kVariable = 144,
kFunctionCall = 145,
kData = 146,
kUnary = 147,
kBinary = 148,
kThree = 149,
kDefinedVariable = 150,
kDefinedString = 151,
//
kPlusD = 152,
kPlusDD = 153,
kMultD = 154,
kMultDD = 155,
kBoolOptimizeOr = 156,
kBoolOptimizeAnd = 157,
kBoolSet = 158,
kFDM = 159,
kFD0 = 160,
kFD1 = 161,
kFD2 = 162,
kFD3 = 163
};
public:
// TFormula status bits
enum {
kNotGlobal = BIT(10), // don't store in gROOT->GetListOfFunction
kNormalized = BIT(14), // set to true if the function (ex gausn) is normalized
kLinear = BIT(16) //set to true if the function is for linear fitting
};
TFormula();
TFormula(const char *name,const char *formula);
TFormula(const TFormula &formula);
TFormula& operator=(const TFormula &rhs);
virtual ~TFormula();
public:
void Optimize();
virtual void Analyze(const char *schain, Int_t &err, Int_t offset=0);
virtual Bool_t AnalyzeFunction(TString &chaine, Int_t &err, Int_t offset=0);
virtual Int_t Compile(const char *expression="");
virtual void Copy(TObject &formula) const;
virtual void Clear(Option_t *option="");
virtual char *DefinedString(Int_t code);
virtual Double_t DefinedValue(Int_t code);
virtual Int_t DefinedVariable(TString &variable,Int_t &action);
virtual Double_t Eval(Double_t x, Double_t y=0, Double_t z=0, Double_t t=0) const;
virtual Double_t EvalParOld(const Double_t *x, const Double_t *params=0);
virtual Double_t EvalPar(const Double_t *x, const Double_t *params=0){return ((*this).*fOptimal)(x,params);};
virtual const TObject *GetLinearPart(Int_t i);
virtual Int_t GetNdim() const {return fNdim;}
virtual Int_t GetNpar() const {return fNpar;}
virtual Int_t GetNumber() const {return fNumber;}
virtual TString GetExpFormula(Option_t *option="") const;
Double_t GetParameter(Int_t ipar) const;
Double_t GetParameter(const char *name) const;
virtual Double_t *GetParameters() const {return fParams;}
virtual void GetParameters(Double_t *params){for(Int_t i=0;i<fNpar;i++) params[i] = fParams[i];}
virtual const char *GetParName(Int_t ipar) const;
virtual Int_t GetParNumber(const char *name) const;
virtual Bool_t IsLinear() {return TestBit(kLinear);}
virtual Bool_t IsNormalized() {return TestBit(kNormalized);}
virtual void Print(Option_t *option="") const; // *MENU*
virtual void ProcessLinear(TString &replaceformula);
virtual void SetNumber(Int_t number) {fNumber = number;}
virtual void SetParameter(const char *name, Double_t parvalue);
virtual void SetParameter(Int_t ipar, Double_t parvalue);
virtual void SetParameters(const Double_t *params);
virtual 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); // *MENU*
virtual void SetParName(Int_t ipar, const char *name);
virtual 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"); // *MENU*
virtual void Update() {;}
static void SetMaxima(Int_t maxop=1000, Int_t maxpar=1000, Int_t maxconst=1000);
ClassDef(TFormula,8) //The formula base class f(x,y,z,par)
};
#endif
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