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Reference Guide
TFormula_v5.cxx
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1// @(#)root/hist:$Id$
2// Author: Nicolas Brun 19/08/95
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
12#include <cmath>
13
14#include "Riostream.h"
15#include "TROOT.h"
16#include "TClass.h"
17#include "v5/TFormula.h"
18#include "TMath.h"
19#include "TRandom.h"
20#include "TFunction.h"
21#include "TMethodCall.h"
22#include "TObjString.h"
23#include "TError.h"
24#include "v5/TFormulaPrimitive.h"
25#include "TInterpreter.h"
26#include "TVirtualMutex.h"
27
28#ifdef WIN32
29#pragma optimize("",off)
30#endif
31
32static Int_t gMAXOP=1000,gMAXPAR=1000,gMAXCONST=1000;
33const Int_t gMAXSTRINGFOUND = 10;
34const UInt_t kOptimizationError = BIT(19);
35
36ClassImp(ROOT::v5::TFormula);
37
38namespace ROOT {
39
40 namespace v5 {
41
42/** \class TFormula TFormula.h "inc/v5/TFormula.h"
43 \ingroup Hist
44The FORMULA class (ROOT version 5)
45
46 Example of valid expressions:
47
48 - `sin(x)/x`
49 - `[0]*sin(x) + [1]*exp(-[2]*x)`
50 - `x + y**2`
51 - `x^2 + y^2`
52 - `[0]*pow([1],4)`
53 - `2*pi*sqrt(x/y)`
54 - `gaus(0)*expo(3) + ypol3(5)*x`
55 - `gausn(0)*expo(3) + ypol3(5)*x`
56
57 In the last example above:
58
59 gaus(0) is a substitute for `[0]*exp(-0.5*((x-[1])/[2])**2)`
60 and (0) means start numbering parameters at 0
61
62 gausn(0) is a substitute for `[0]*exp(-0.5*((x-[1])/[2])**2)/(sqrt(2*pi)*[2]))`
63 and (0) means start numbering parameters at 0
64
65 expo(3) is a substitute for `exp([3]+[4]*x)`
66
67 pol3(5) is a substitute for `par[5]+par[6]*x+par[7]*x**2+par[8]*x**3`
68 (here Pol3 stands for Polynomial of degree 3)
69
70 TMath functions can be part of the expression, eg:
71
72 - `TMath::Landau(x)*sin(x)`
73 - `TMath::Erf(x)`
74
75 Comparisons operators are also supported (&&, ||, ==, <=, >=, !)
76 Examples:
77
78 sin(x*(x<0.5 || x>1))
79
80 If the result of a comparison is TRUE, the result is 1, otherwise 0.
81
82 Already predefined names can be given. For example, if the formula
83
84 TFormula old(sin(x*(x<0.5 || x>1))) one can assign a name to the formula. By default
85 the name of the object = title = formula itself.
86 old.SetName("old").
87 then, old can be reused in a new expression.
88 TFormula new("x*old") is equivalent to:
89 TFormula new("x*sin(x*(x<0.5 || x>1))")
90
91 Up to 4 dimensions are supported (indicated by x, y, z, t)
92 An expression may have 0 parameters or a list of parameters
93 indicated by the sequence [par_number]
94
95 A graph showing the logic to compile and analyze a formula
96 is shown in TFormula::Compile and TFormula::Analyze.
97 Once a formula has been compiled, it can be evaluated for a given
98 set of parameters. see graph in TFormula::EvalPar.
99
100 This class is the base class for the function classes TF1,TF2 and TF3.
101 It is also used by the ntuple selection mechanism TNtupleFormula.
102
103 In version 7 of TFormula, the usage of fOper has been changed
104 to improve the performance of TFormula::EvalPar.
105 Conceptually, fOper was changed from a simple array of Int_t
106 to an array of composite values.
107 For example a 'ylandau(5)' operation used to be encoded as 4105;
108 it is now encoded as (klandau >> kTFOperShift) + 5
109 Any class inheriting from TFormula and using directly fOper (which
110 is now a private data member), needs to be updated to take this
111 in consideration. The member functions recommended to set and
112 access fOper are: SetAction, GetAction, GetActionParam
113 For more performant access to the information, see the implementation
114 TFormula::EvalPar
115
116 ### CHANGING DEFAULT SETTINGS
117
118 When creating complex formula , it may be necessary to increase
119 some default parameters. see static function TFormula::SetMaxima
120
121 ### WHY TFormula CANNOT ACCEPT A CLASS MEMBER FUNCTION ?
122
123 This is a frequently asked question.
124 C++ is a strongly typed language. There is no way for TFormula (without
125 recompiling this class) to know about all possible user defined data types.
126 This also apply to the case of a static class function.
127 Because TMath is a special and frequent case, TFormula is aware
128 of all TMath functions.
129*/
130
131////////////////////////////////////////////////////////////////////////////////
132/// Formula default constructor.
133
134TFormula::TFormula(): TNamed()
135{
136 fNdim = 0;
137 fNpar = 0;
138 fNoper = 0;
139 fNconst = 0;
140 fNumber = 0;
141 fExpr = 0;
142 fOper = 0;
143 fConst = 0;
144 fParams = 0;
145 fNstring= 0;
146 fNames = 0;
147 fNval = 0;
148 //
149 //MI change
150 fNOperOptimized = 0;
151 fExprOptimized = 0;
152 fOperOptimized = 0;
153 fOperOffset = 0;
154 fPredefined = 0;
155 fOptimal = (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalParOld;
156}
157
158////////////////////////////////////////////////////////////////////////////////
159/// Normal Formula constructor.
160
161TFormula::TFormula(const char *name,const char *expression) :
162 TNamed(name,expression)
163{
164 fNdim = 0;
165 fNpar = 0;
166 fNoper = 0;
167 fNconst = 0;
168 fNumber = 0;
169 fExpr = 0;
170 fOper = 0;
171 fConst = 0;
172 fParams = 0;
173 fNstring= 0;
174 fNames = 0;
175 fNval = 0;
176 //
177 //MI change
178 fNOperOptimized = 0;
179 fExprOptimized = 0;
180 fOperOptimized = 0;
181 fOperOffset = 0;
182 fPredefined = 0;
183 fOptimal = (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalParOld;
184
185 if (!expression || !*expression) {
186 Error("TFormula", "expression may not be 0 or have 0 length");
187 return;
188 }
189
190 //eliminate blanks in expression
191 Int_t i,j,nch;
192 nch = strlen(expression);
193 char *expr = new char[nch+1];
194 j = 0;
195 for (i=0;i<nch;i++) {
196 if (expression[i] == ' ') continue;
197 if (i > 0 && (expression[i] == '*') && (expression[i-1] == '*')) {
198 expr[j-1] = '^';
199 continue;
200 }
201 expr[j] = expression[i]; j++;
202 }
203 expr[j] = 0;
204 Bool_t gausNorm = kFALSE;
205 Bool_t landauNorm = kFALSE;
206 Bool_t linear = kFALSE;
207
208 if (j) {
209 TString chaine = expr;
210 //special case for functions for linear fitting
211 if (chaine.Contains("++"))
212 linear = kTRUE;
213 // special case for normalized gaus
214 if (chaine.Contains("gausn")) {
215 gausNorm = kTRUE;
216 TString tmp = chaine;
217 tmp.ReplaceAll("gausn","");
218 tmp.ReplaceAll("landaun","");
219 if ( tmp.Contains("gaus") )
220 Warning("TFormula","Cannot use both gaus and gausn - gaus will be treated as gausn");
221 if ( tmp.Contains("landau") )
222 Warning("TFormula","Cannot use both gausn and landau - landau will be treated as landaun");
223 }
224 // special case for normalized landau
225 if (chaine.Contains("landaun")) {
226 landauNorm = kTRUE;
227 TString tmp = chaine;
228 tmp.ReplaceAll("landaun","");
229 tmp.ReplaceAll("gausn","");
230 if ( tmp.Contains("gaus") ) {
231 Warning("TFormula","Cannot use both gaus and landaun - gaus will be treated as gausn");
232 }
233 if ( tmp.Contains("landau") )
234 Warning("TFormula","Cannot use both landau and landaun - landau will be treated as landaun");
235 }
236 // need to the replacement here for the error message before
237 if (gausNorm)
238 chaine.ReplaceAll("gausn","gaus");
239 if (landauNorm)
240 chaine.ReplaceAll("landaun","landau");
241
242 SetTitle(chaine.Data());
243 }
244 delete [] expr;
245
246 if (linear) SetBit(kLinear);
247
248 if (Compile()) return;
249
250 if (gausNorm) SetBit(kNormalized);
251 if (landauNorm) SetBit(kNormalized);
252
253 // Store formula in linked list of formula in ROOT
254
255
256 if (strcmp(name,"x")==0 || strcmp(name,"y")==0 ||
257 strcmp(name,"z")==0 || strcmp(name,"t")==0 )
258 {
259 Error("TFormula","The name \'%s\' is reserved as a TFormula variable name.\n"
260 "\tThis function will not be registered in the list of functions",name);
261 } else {
262 R__LOCKGUARD(gROOTMutex);
263 TFormula *old = (TFormula*)gROOT->GetListOfFunctions()->FindObject(name);
264 if (old) {
265 gROOT->GetListOfFunctions()->Remove(old);
266 }
267 gROOT->GetListOfFunctions()->Add(this);
268 }
269}
270
271////////////////////////////////////////////////////////////////////////////////
272/// Default constructor.
273
274TFormula::TFormula(const TFormula &formula) : TNamed()
275{
276 fNdim = 0;
277 fNpar = 0;
278 fNoper = 0;
279 fNconst = 0;
280 fNumber = 0;
281 fExpr = 0;
282 fOper = 0;
283 fConst = 0;
284 fParams = 0;
285 fNstring= 0;
286 fNames = 0;
287 fNval = 0;
288 fNOperOptimized = 0;
289 fPredefined = 0;
290 fOperOffset = 0;
291 fExprOptimized = 0;
292 fOperOptimized = 0;
293 fOptimal = (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalParOld;
294
295 ((TFormula&)formula).TFormula::Copy(*this);
296}
297
298////////////////////////////////////////////////////////////////////////////////
299/// Operator =
300
301TFormula& TFormula::operator=(const TFormula &rhs)
302{
303 if (this != &rhs) {
304 rhs.Copy(*this);
305 }
306 return *this;
307}
308
309////////////////////////////////////////////////////////////////////////////////
310/// Formula default destructor.
311
312TFormula::~TFormula()
313{
314 if (gROOT) {
315 R__LOCKGUARD(gROOTMutex);
316 gROOT->GetListOfFunctions()->Remove(this);
317 }
318
319 ClearFormula();
320}
321
322////////////////////////////////////////////////////////////////////////////////
323/// Check if the chain as function call.
324///
325/// If you overload this member function, you also HAVE TO
326/// never call the constructor:
327///
328/// ~~~ {.cpp}
329/// TFormula::TFormula(const char *name,const char *expression)
330/// ~~~
331///
332/// and write your own constructor
333///
334/// ~~~ {.cpp}
335/// MyClass::MyClass(const char *name,const char *expression) : TFormula()
336/// ~~~
337///
338/// which has to call the TFormula default constructor and whose implementation
339/// should be similar to the implementation of the normal TFormula constructor
340///
341/// This is necessary because the normal TFormula constructor call indirectly
342/// the virtual member functions Analyze, DefaultString, DefaultValue
343/// and DefaultVariable.
344
345Bool_t TFormula::AnalyzeFunction(TString &chaine, Int_t &err, Int_t offset)
346{
347 int i;
348
349 // We have to decompose the chain is 3 potential components:
350 // namespace::functionName( args )
351
352 Ssiz_t argStart = chaine.First('(');
353 if (argStart<0) return false;
354
355 TString functionName = chaine(0,argStart);
356
357 // This does not support template yet (where the scope operator might be in
358 // one of the template arguments
359 Ssiz_t scopeEnd = functionName.Last(':');
360 TString spaceName;
361 if (scopeEnd>0 && functionName[scopeEnd-1]==':') {
362 spaceName = functionName(0,scopeEnd-1);
363 functionName.Remove(0,scopeEnd+1);
364 }
365
366 // Now we need to count and decompose the actual arguments, we could also check the type
367 // of the arguments
368 if (chaine[chaine.Length()-1] != ')') {
369 Error("AnalyzeFunction","We thought we had a function but we dont (in %s)\n",chaine.Data());
370 }
371
372 TString args = chaine(argStart+1,chaine.Length()-2-argStart);
373 TObjArray argArr;
374 argArr.SetOwner(kTRUE);
375 //fprintf(stderr,"args are '%s'\n",args.Data());
376
377 Bool_t inString = false;
378 int paran = 0;
379 int brack = 0;
380 int prevComma = 0;
381 int nargs = 0;
382 for(i=0; i<args.Length(); i++) {
383 if (args[i]=='"') inString = !inString;
384 if (inString) continue;
385
386 Bool_t foundArg = false;
387 switch(args[i]) {
388
389 case '(': paran++; break;
390 case ')': paran--; break;
391 case '[': brack++; break;
392 case ']': brack--; break;
393
394 case ',': if (paran==0 && brack==0) { foundArg = true; } break;
395 }
396 if ((i+1)==args.Length()) {
397 foundArg = true; i++;
398 }
399 if (foundArg) {
400 TString arg = args(prevComma,i-prevComma);
401
402 // Here we could
403 // a) check the type
404 //fprintf(stderr,"found #%d arg %s\n",nargs,arg.Data());
405
406 // We register the arg for later usage
407 argArr.Add(new TObjString(arg));
408 nargs++;
409
410 prevComma = i+1;
411 };
412 }
413
414 if (nargs>999) {
415 err = 7;
416 return false;
417 }
418
419 // Now we need to lookup the function and check its arguments.
420 TClass *ns = (spaceName.Length()) ? TClass::GetClass(spaceName) : 0;
421 ClassInfo_t *cinfo = 0;
422 if (ns) {
423 cinfo = ns->GetClassInfo();
424 } else {
425 cinfo = gInterpreter->ClassInfo_Factory();
426 }
427
428 // ROOT does yet have a complete TType class, but TCling does,
429 // so let's use that for now.
430 static TypeInfo_t *const doubletype { gInterpreter->TypeInfo_Factory("double") };
431
432 std::vector<TypeInfo_t*> proto(nargs,doubletype);
433
434 CallFunc_t *callfunc = gInterpreter->CallFunc_Factory();
435 Long_t func_offset;
436 gInterpreter->CallFunc_SetFuncProto(callfunc,cinfo,functionName,proto,false,&func_offset,ROOT::kConversionMatch);
437
438 TMethodCall *method = new TMethodCall(ns,callfunc,func_offset);
439
440 if (!ns) gInterpreter->ClassInfo_Delete(cinfo);
441 gInterpreter->CallFunc_Delete(callfunc);
442
443 if (method->IsValid()) {
444 if (method->ReturnType() == TMethodCall::kOther) {
445 /*
446 Error("Compile",
447 "TFormula can only call interpreted and compiled function that returns a numerical type %s returns a %s\n",
448 method->GetMethodName(), method->GetMethod()->GetReturnTypeName());
449 */
450 err=29;
451
452 } else {
453
454 // Analyze the arguments
455 TIter next(&argArr);
456 TObjString *objstr;
457 while ( (objstr=(TObjString*)next()) ) {
458 Analyze(objstr->String(),err,offset);
459 }
460
461 fFunctions.Add(method);
462 fExpr[fNoper] = method->GetMethod()->GetPrototype();
463 SetAction(fNoper, kFunctionCall, fFunctions.GetLast()*1000 + nargs);
464 fNoper++;
465 return true;
466 }
467 }
468
469 delete method;
470 //
471 // MI change - extended space of functions
472 // not forward compatible change
473 //
474 TString cbase(chaine);
475 Int_t args_paran = cbase.First("(");
476 if (args_paran>0){
477 cbase[args_paran]=0;
478 }
479
480 ROOT::v5::TFormulaPrimitive *prim = ROOT::v5::TFormulaPrimitive::FindFormula(cbase, args_paran>0 ? cbase.Data() + args_paran + 1 : (const char*)0);
481 if (prim && (!IsA()->GetBaseClass("TTreeFormula"))) {
482 // TO BE DONE ALSO IN TTREFORMULA - temporary fix MI
483 // Analyze the arguments
484 TIter next(&argArr);
485 TObjString *objstr;
486 while ( (objstr=(TObjString*)next()) ) {
487 Analyze(objstr->String(),err,offset); if (err) return kFALSE;
488 }
489 if (nargs!=prim->fNArguments) {
490 Error("Compile", "%s requires %d arguments",
491 prim->GetName(), prim->fNArguments);
492 return kFALSE;
493 }
494 fExpr[fNoper] = prim->GetName();
495 if (prim->fType==10){
496 SetAction(fNoper, kFD1);
497 }
498 if (prim->fType==110){
499 SetAction(fNoper, kFD2);
500 }
501 if (prim->fType==1110){
502 SetAction(fNoper, kFD3);
503 }
504 if (prim->fType==-1){
505 SetAction(fNoper, kFDM);
506 if (fNpar<prim->fNParameters) fNpar+=prim->fNParameters;
507 }
508
509 fNoper++;
510 return kTRUE;
511 }
512
513 return kFALSE;
514}
515
516////////////////////////////////////////////////////////////////////////////////
517/// Analyze a sub-expression in one formula.
518///
519/// Expressions in one formula are recursively analyzed.
520/// Result of analysis is stored in the object tables.
521///
522/// ### Table of function codes and errors
523///
524/// ~~~ {.cpp}
525/// * functions :
526///
527/// + 1 pow 20
528/// - 2 sq 21
529/// * 3 sqrt 22
530/// / 4 strstr 23
531/// % 5 min 24
532/// max 25
533/// log 30
534/// cos 10 exp 31
535/// sin 11 log10 32
536/// tan 12
537/// acos 13 abs 41
538/// asin 14 sign 42
539/// atan 15 int 43
540/// atan2 16
541/// fmod 17 rndm 50
542///
543/// cosh 70 acosh 73
544/// sinh 71 asinh 74
545/// tanh 72 atanh 75
546///
547/// expo 100 gaus 110 gausn (see note below)
548/// expo(0) 100 0 gaus(0) 110 0 gausn(0)
549/// expo(1) 100 1 gaus(1) 110 1 gausn(1)
550/// xexpo 100 x xgaus 110 x xgausn
551/// yexpo 101 x ygaus 111 x ygausn
552/// zexpo 102 x zgaus 112 x zgausn
553/// xyexpo 105 x xygaus 115 x xygausn
554/// yexpo(5) 102 5 ygaus(5) 111 5 ygausn(5)
555/// xyexpo(2) 105 2 xygaus(2) 115 2 xygausn(2)
556///
557/// landau 120 x landaun (see note below)
558/// landau(0) 120 0 landaun(0)
559/// landau(1) 120 1 landaun(1)
560/// xlandau 120 x xlandaun
561/// ylandau 121 x ylandaun
562/// zlandau 122 x zlandaun
563/// xylandau 125 x xylandaun
564/// ylandau(5) 121 5 ylandaun(5)
565/// xylandau(2) 125 2 xylandaun(2)
566///
567/// pol0 130 x pol1 130 1xx
568/// pol0(0) 130 0 pol1(0) 130 100
569/// pol0(1) 130 1 pol1(1) 130 101
570/// xpol0 130 x xpol1 130 101
571/// ypol0 131 x ypol1 131 101
572/// zpol0 132 x zpol1 132 1xx
573/// ypol0(5) 131 5 ypol1(5) 131 105
574///
575/// pi 40
576///
577/// && 60 < 64
578/// || 61 > 65
579/// == 62 <= 66
580/// != 63 => 67
581/// ! 68
582/// ==(string) 76 & 78
583/// !=(string) 77 | 79
584/// <<(shift) 80 >>(shift) 81
585/// ? : 82
586///
587/// * constants (kConstants) :
588///
589/// c0 141 1 c1 141 2 etc..
590///
591/// * strings (kStringConst):
592///
593/// sX 143 x
594///
595/// * variables (kFormulaVar) :
596///
597/// x 144 0 y 144 1 z 144 2 t 144 3
598///
599/// * parameters :
600///
601/// [1] 140 1
602/// [2] 140 2
603/// etc.
604/// ~~~
605///
606/// ### Special cases for normalized gaussian or landau distributions
607///
608/// the expression "gaus" is a substitute for
609///
610/// [0]*exp(-0.5*((x-[1])/[2])**2)
611///
612/// to obtain a standard normalized gaussian, use "gausn" instead of "gaus"
613/// the expression "gausn" is a substitute for
614///
615/// [0]*exp(-0.5*((x-[1])/[2])**2)/(sqrt(2*pi)*[2]))
616///
617/// WARNING: gaus and gausn are mutually exclusive in the same expression.
618///
619/// In the same way the expression "landau" is a substitute for
620///
621/// [0]*TMath::Landau(x,[1],[2],kFALSE)
622///
623/// to obtain a standard normalized landau, use "landaun" instead of "landau"
624/// the expression "landaun" is a substitute for
625///
626/// [0]*TMath::Landau(x,[1],[2],kTRUE)
627///
628/// WARNING: landau and landaun are mutually exclusive in the same expression.
629///
630/// ### Boolean optimization (kBoolOptmize) :
631///
632/// Those pseudo operation are used to implement lazy evaluation of
633/// && and ||. When the left hand of the expression if false
634/// (respectively true), the evaluation of the right is entirely skipped
635/// (since it would not change the value of the expression).
636///
637/// && 142 11 (one operation on right) 142 21 (2 operations on right)
638/// || 142 12 (one operation on right) 142 22 (2 operations on right)
639///
640/// * functions calls (kFunctionCall) :
641///
642/// f0 145 0 f1 145 1 etc..
643///
644/// ### Errors :
645///
646/// 1 : Division By Zero
647/// 2 : Invalid Floating Point Operation
648/// 4 : Empty String
649/// 5 : invalid syntax
650/// 6 : Too many operators
651/// 7 : Too many parameters
652/// 10 : z specified but not x and y
653/// 11 : z and y specified but not x
654/// 12 : y specified but not x
655/// 13 : z and x specified but not y
656/// 20 : non integer value for parameter number
657/// 21 : atan2 requires two arguments
658/// 22 : pow requires two arguments
659/// 23 : degree of polynomial not specified
660/// 24 : Degree of polynomial must be positive
661/// 25 : Degree of polynomial must be less than 20
662/// 26 : Unknown name
663/// 27 : Too many constants in expression
664/// 28 : strstr requires two arguments
665/// 29 : interpreted or compiled function have to return a numerical type
666/// 30 : Bad numerical expression
667/// 31 : Part of the variable exist but some of it is not accessible or useable
668/// 40 : '(' is expected
669/// 41 : ')' is expected
670/// 42 : '[' is expected
671/// 43 : ']' is expected
672///
673/// \image html TFormula_analyze.png
674///
675/// ### Special functions
676///
677/// By default, the formula is assigned fNumber=0. However, the following
678/// formula built with simple functions are assigned fNumber:
679///
680/// "gaus" 100 (or gausn)
681/// "xygaus" 110
682/// "expo" 200
683/// "polN" 300+N
684/// "landau" 400
685/// "xylandau" 410
686///
687/// Note that expressions like gaus(0), expo(1) will force fNumber=0
688///
689/// ### Warning when deriving a class from TFormula
690///
691/// If you overload this member function, you also HAVE TO
692/// never call the constructor:
693///
694/// ~~~ {.cpp}
695/// TFormula::TFormula(const char *name,const char *expression)
696/// ~~~
697///
698/// and write your own constructor
699///
700/// ~~~ {.cpp}
701/// MyClass::MyClass(const char *name,const char *expression) : TFormula()
702/// ~~~
703///
704/// which has to call the TFormula default constructor and whose implementation
705/// should be similar to the implementation of the normal TFormula constructor
706///
707/// This is necessary because the normal TFormula constructor call indirectly
708/// the virtual member functions Analyze, DefaultString, DefaultValue
709/// and DefaultVariable.
710
711void TFormula::Analyze(const char *schain, Int_t &err, Int_t offset)
712{
713
714
715 Int_t valeur,find,n,i,j,k,lchain,nomb,virgule,inter,nest;
716 valeur=find=n=i=j=k=lchain=nomb=virgule=inter=nest = 0;
717 Int_t compt,compt2,compt3,compt4;
718 Bool_t inString;
719 Double_t vafConst;
720 ULong_t vafConst2;
721 Bool_t parenthese;
722 TString s,chaine_error,chaine1ST;
723 TString s1,s2,s3,ctemp;
724
725 TString chaine = schain;
726 const TFormula *oldformula;
727 Int_t modulo,plus,puiss10,puiss10bis,moins,multi,divi,puiss,et,ou,petit,grand,egal,diff,peteg,grdeg,etx,oux,rshift,lshift,tercond,terelse;
728 char t;
729 TString slash("/"), escapedSlash("\\/");
730 Int_t inter2 = 0;
731 SetNumber(0);
732 Int_t actionCode,actionParam;
733 Int_t err_hint = 0;
734
735 // Verify correct matching of parenthesis and remove unnecessary parenthesis.
736 lchain = chaine.Length();
737 //if (chaine(lchain-2,2) == "^2") chaine = "sq(" + chaine(0,lchain-2) + ")";
738 parenthese = kTRUE;
739 lchain = chaine.Length();
740 while (parenthese && lchain>0 && err==0){
741 compt = 0;
742 compt2 = 0;
743 inString = false;
744 lchain = chaine.Length();
745 if (lchain==0) err=4;
746 else {
747 for (i=1; i<=lchain; ++i) {
748 if (chaine(i-1,1) == "\"") inString = !inString;
749 if (!inString) {
750 if (chaine(i-1,1) == "[") compt2++;
751 if (chaine(i-1,1) == "]") compt2--;
752 if (chaine(i-1,1) == "(") compt++;
753 if (chaine(i-1,1) == ")") compt--;
754 }
755 if (compt < 0) err = 40; // more open parentheses than close parentheses
756 if (compt2< 0) err = 42; // more ] than [
757 if (compt==0 && (i!=lchain || lchain==1)) parenthese = kFALSE;
758 // if (lchain<3 && chaine(0,1)!="(" && chaine(lchain-1,1)!=")") parenthese = kFALSE;
759 }
760 if (compt > 0) err = 41; // more ( than )
761 if (compt2> 0) err = 43; // more [ than ]
762 if (parenthese) chaine = chaine(1,lchain-2);
763 }
764 } // while parenthesis
765
766 if (lchain==0) err=4; // empty string
767 modulo=plus=moins=multi=divi=puiss=et=ou=petit=grand=egal=diff=peteg=grdeg=etx=oux=rshift=lshift=tercond=terelse=0;
768
769 // Look for simple operators
770
771 if (err==0) {
772 compt = compt2 = compt3 = compt4 = 0;puiss10=0;puiss10bis = 0;
773 inString = false;
774 j = lchain;
775 Bool_t isdecimal = 1; // indicates whether the left part is decimal.
776
777 for (i=1;i<=lchain; i++) {
778
779 puiss10=puiss10bis=0;
780 if (i>2) {
781 t = chaine[i-3];
782 isdecimal = isdecimal && (strchr("0123456789.",t)!=0);
783 if (isdecimal) {
784 if ( chaine[i-2] == 'e' || chaine[i-2] == 'E' ) puiss10 = 1;
785 } else if ( strchr("+-/[]()&|><=!*/%^\\",t) ) {
786 isdecimal = 1; // reset after delimiter
787 }
788 }
789 if (j>2) {
790 if (chaine[j-2] == 'e' || chaine[j-2] == 'E') {
791 Bool_t isrightdecimal = 1;
792
793 for(k=j-3; k>=0 && isrightdecimal; --k) {
794 t = chaine[k];
795 isrightdecimal = isrightdecimal && (strchr("0123456789.",t)!=0);
796 if (!isrightdecimal) {
797 if (strchr("+-/[]()&|><=!*/%^\\",t)!=0) {
798 puiss10bis = 1;
799 }
800 }
801 }
802 if (k<0 && isrightdecimal) puiss10bis = 1;
803 }
804 }
805 if (puiss10 && (i<=lchain)) {
806 t = chaine[i];
807 puiss10 = (strchr("0123456789.",t)!=0);
808 }
809 if (puiss10bis && (j<=lchain)) {
810 t = chaine[j];
811 puiss10bis = (strchr("0123456789.",t)!=0);
812 }
813
814 if (chaine(i-1,1) == "\"") inString = !inString;
815 if (inString) continue;
816 if (chaine(i-1,1) == "[") compt2++;
817 if (chaine(i-1,1) == "]") compt2--;
818 if (chaine(i-1,1) == "(") compt++;
819 if (chaine(i-1,1) == ")") compt--;
820 if (chaine(j-1,1) == "[") compt3++;
821 if (chaine(j-1,1) == "]") compt3--;
822 if (chaine(j-1,1) == "(") compt4++;
823 if (chaine(j-1,1) == ")") compt4--;
824 if (chaine(i-1,2)=="&&" && !inString && compt==0 && compt2==0 && et==0) {et=i;puiss=0;}
825 if (chaine(i-1,2)=="||" && compt==0 && compt2==0 && ou==0) {puiss10=0; ou=i;}
826 if (chaine(i-1,1)=="&" && compt==0 && compt2==0 && etx==0) {etx=i;puiss=0;}
827 if (chaine(i-1,1)=="|" && compt==0 && compt2==0 && oux==0) {puiss10=0; oux=i;}
828 if (chaine(i-1,2)==">>" && compt==0 && compt2==0 && rshift==0) {puiss10=0; rshift=i;}
829 if (chaine(i-1,1)==">" && compt==0 && compt2==0 && rshift==0 && grand==0)
830 {puiss10=0; grand=i;}
831 if (chaine(i-1,2)=="<<" && compt==0 && compt2==0 && lshift==0) {puiss10=0; lshift=i;}
832 if (chaine(i-1,1)=="<" && compt==0 && compt2==0 && lshift==0 && petit==0)
833 {puiss10=0; petit=i;
834 // Check whether or not we have a template names! (actually this can
835 // only happen in TTreeFormula.
836 for(int ip = i,depth=0; ip < lchain; ++ip) {
837 char c = chaine(ip);
838 // The characters allowed in the template parameter are alpha-numerical characters,
839 // underscores, comma, <, > and scope operator.
840 if (isalnum(c) || c=='_' || c==',') continue;
841 if (c==':' && chaine(ip+1)==':') { ++ip; continue; }
842 if (c=='<') { ++depth; continue; }
843 if (c=='>') {
844 if (depth) { --depth; continue; }
845 else {
846 // We reach the end of the template parameter.
847 petit = 0;
848 i = ip+1;
849 break;
850 }
851 }
852 // Character not authorized within a template parameter
853 break;
854 }
855 if (petit==0) {
856 // We found a template parameter and modified i
857 continue; // the for(int i ,...)
858 }
859 }
860 if ((chaine(i-1,2)=="<=" || chaine(i-1,2)=="=<") && compt==0 && compt2==0
861 && peteg==0) {peteg=i; puiss10=0; petit=0;}
862 if ((chaine(i-1,2)=="=>" || chaine(i-1,2)==">=") && compt==0 && compt2==0
863 && grdeg==0) {puiss10=0; grdeg=i; grand=0;}
864 if (chaine(i-1,2) == "==" && compt == 0 && compt2 == 0 && egal == 0) {puiss10=0; egal=i;}
865 if (chaine(i-1,2) == "!=" && compt == 0 && compt2 == 0 && diff == 0) {puiss10=0; diff=i;}
866 if (i>1 && chaine(i-1,1) == "+" && compt == 0 && compt2 == 0 && puiss10==0) plus=i;
867 if (chaine(j-1,1) == "-" && chaine(j-2,1) != "*" && chaine(j-2,1) != "/"
868 && chaine(j-2,1)!="^" && compt3==0 && compt4==0 && moins==0 && puiss10bis==0) moins=j;
869 if (chaine(i-1,1)=="%" && compt==0 && compt2==0 && modulo==0) {puiss10=0; modulo=i;}
870 if (chaine(i-1,1)=="*" && compt==0 && compt2==0 && multi==0) {puiss10=0; multi=i;}
871 if (chaine(j-1,1)=="/" && chaine(j-2,1)!="\\"
872 && compt4==0 && compt3==0 && divi==0)
873 {
874 puiss10=0; divi=j;
875 }
876 if (chaine(j-1)=='^' && compt4==0 && compt3==0 && puiss==0) {puiss10=0; puiss=j;}
877 if (chaine(i-1)=='?' && compt == 0 && compt2 == 0 && tercond == 0) {puiss10=0; tercond=i;}
878 if (chaine(i-1)==':' && tercond && compt == 0 && compt2 == 0 && terelse == 0) {
879 if (i>2 && chaine(i-2)!=':' && chaine(i)!=':') {
880 puiss10=0; terelse=i;
881 }
882 }
883
884 j--;
885 }
886
887 // If operator found, analyze left and right part of the statement
888
889 actionParam = 0;
890 if (tercond && terelse) {
891 if (tercond == 1 || terelse == lchain || tercond == (terelse-1) ) {
892 err = 5;
893 chaine_error = "?:";
894 } else {
895 // Condition
896 ctemp = chaine(0,tercond-1);
897 Analyze(ctemp.Data(),err,offset); if (err) return;
898
899 fExpr[fNoper] = "?: condition jump";
900 actionCode = kJumpIf;
901 actionParam = 0;
902 SetAction(fNoper,actionCode, actionParam);
903 Int_t optloc = fNoper++;
904
905 // Expression executed if condition is true.
906 ctemp = chaine(tercond,terelse-tercond-1);
907 Analyze(ctemp.Data(),err,offset); if (err) return;
908 actionParam = fNoper; // We want to skip the next instruction ('else jump'), so we set the param to the current cursor and the next instruction will be skip by the ++i in the eval loop
909 SetAction(optloc, actionCode, actionParam);
910
911 fExpr[fNoper] = "?: else jump";
912 actionCode = kJump;
913 actionParam = 0;
914 // Set jump target.
915 SetAction(fNoper,actionCode, actionParam);
916 optloc = fNoper++;
917
918 // Expression executed if condition is false.
919 ctemp = chaine(terelse,lchain-terelse);
920 Analyze(ctemp.Data(),err,offset); if (err) return;
921 // Set jump target.
922 actionParam = fNoper - 1; // We need to not skip the next instruction, so we compensate for the ++i in the eval loop
923 SetAction(optloc, actionCode, actionParam);
924
925 if (IsString(optloc-1) != IsString(fNoper-1)) {
926 err = 45;
927 chaine_error = "?:";
928 }
929 }
930 } else if (ou != 0) { //check for ||
931 if (ou==1 || ou==lchain-1) {
932 err=5;
933 chaine_error="||";
934 }
935 else {
936 ctemp = chaine(0,ou-1);
937 Analyze(ctemp.Data(),err,offset); if (err) return;
938
939 fExpr[fNoper] = "|| checkpoint";
940 actionCode = kBoolOptimize;
941 actionParam = 2;
942 SetAction(fNoper,actionCode, actionParam);
943 Int_t optloc = fNoper++;
944
945 ctemp = chaine(ou+1,lchain-ou-1);
946 Analyze(ctemp.Data(),err,offset); if (err) return;
947 fExpr[fNoper] = "||";
948 actionCode = kOr;
949 SetAction(fNoper,actionCode, 0);
950
951 SetAction( optloc, GetAction(optloc), GetActionParam(optloc) + (fNoper-optloc) * 10);
952 fNoper++;
953 if (!CheckOperands(optloc-1,fNoper-1,err)) return;
954 }
955 } else if (et!=0) {
956 if (et==1 || et==lchain-1) {
957 err=5;
958 chaine_error="&&";
959 }
960 else {
961 ctemp = chaine(0,et-1);
962 Analyze(ctemp.Data(),err,offset); if (err) return;
963
964 fExpr[fNoper] = "&& checkpoint";
965 actionCode = kBoolOptimize;
966 actionParam = 1;
967 SetAction(fNoper,actionCode,actionParam);
968
969 Int_t optloc = fNoper++;
970
971 ctemp = chaine(et+1,lchain-et-1);
972 Analyze(ctemp.Data(),err,offset); if (err) return;
973 fExpr[fNoper] = "&&";
974 actionCode = kAnd;
975 SetAction(fNoper,actionCode,0);
976
977 SetAction(optloc, GetAction(optloc), GetActionParam(optloc) + (fNoper-optloc) * 10);
978 fNoper++;
979 if (!CheckOperands(optloc-1,fNoper-1,err)) return;
980 }
981 } else if (oux!=0) {
982 if (oux==1 || oux==lchain) {
983 err=5;
984 chaine_error="|";
985 }
986 else {
987 ctemp = chaine(0,oux-1);
988 Analyze(ctemp.Data(),err,offset); if (err) return;
989 UInt_t leftopr = fNoper-1;
990 ctemp = chaine(oux,lchain-oux);
991 Analyze(ctemp.Data(),err,offset); if (err) return;
992 fExpr[fNoper] = "|";
993 actionCode = kBitOr;
994 SetAction(fNoper,actionCode,actionParam);
995 fNoper++;
996 if (!CheckOperands(leftopr,fNoper-1,err)) return;
997 }
998 } else if (etx!=0) {
999 if (etx==1 || etx==lchain) {
1000 err=5;
1001 chaine_error="&";
1002 }
1003 else {
1004 ctemp = chaine(0,etx-1);
1005 Analyze(ctemp.Data(),err,offset); if (err) return;
1006 UInt_t leftopr = fNoper-1;
1007 ctemp = chaine(etx,lchain-etx);
1008 Analyze(ctemp.Data(),err,offset); if (err) return;
1009 fExpr[fNoper] = "&";
1010 actionCode = kBitAnd;
1011 SetAction(fNoper,actionCode,actionParam);
1012 fNoper++;
1013 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1014 }
1015 } else if (petit != 0) {
1016 if (petit==1 || petit==lchain) {
1017 err=5;
1018 chaine_error="<";
1019 }
1020 else {
1021 ctemp = chaine(0,petit-1);
1022 Analyze(ctemp.Data(),err,offset); if (err) return;
1023 UInt_t leftopr = fNoper-1;
1024 ctemp = chaine(petit,lchain-petit);
1025 Analyze(ctemp.Data(),err,offset); if (err) return;
1026 fExpr[fNoper] = "<";
1027 actionCode = kLess;
1028 SetAction(fNoper,actionCode,actionParam);
1029 fNoper++;
1030 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1031 }
1032 } else if (grand != 0) {
1033 if (grand==1 || grand==lchain) {
1034 err=5;
1035 chaine_error=">";
1036 }
1037 else {
1038 ctemp = chaine(0,grand-1);
1039 Analyze(ctemp.Data(),err,offset); if (err) return;
1040 UInt_t leftopr = fNoper-1;
1041 ctemp = chaine(grand,lchain-grand);
1042 Analyze(ctemp.Data(),err,offset); if (err) return;
1043 fExpr[fNoper] = ">";
1044 actionCode = kGreater;
1045 SetAction(fNoper,actionCode,actionParam);
1046 fNoper++;
1047 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1048 }
1049 } else if (peteg != 0) {
1050 if (peteg==1 || peteg==lchain-1) {
1051 err=5;
1052 chaine_error="<=";
1053 }
1054 else {
1055 ctemp = chaine(0,peteg-1);
1056 Analyze(ctemp.Data(),err,offset); if (err) return;
1057 ctemp = chaine(peteg+1,lchain-peteg-1);
1058 UInt_t leftopr = fNoper-1;
1059 Analyze(ctemp.Data(),err,offset); if (err) return;
1060 fExpr[fNoper] = "<=";
1061 actionCode = kLessThan;
1062 SetAction(fNoper,actionCode,actionParam);
1063 fNoper++;
1064 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1065 }
1066 } else if (grdeg != 0) {
1067 if (grdeg==1 || grdeg==lchain-1) {
1068 err=5;
1069 chaine_error="=>";
1070 }
1071 else {
1072 ctemp = chaine(0,grdeg-1);
1073 Analyze(ctemp.Data(),err,offset); if (err) return;
1074 UInt_t leftopr = fNoper-1;
1075 ctemp = chaine(grdeg+1,lchain-grdeg-1);
1076 Analyze(ctemp.Data(),err,offset); if (err) return;
1077 fExpr[fNoper] = ">=";
1078 actionCode = kGreaterThan;
1079 SetAction(fNoper,actionCode,actionParam);
1080 fNoper++;
1081 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1082 }
1083 } else if (egal != 0) {
1084 if (egal==1 || egal==lchain-1) {
1085 err=5;
1086 chaine_error="==";
1087 }
1088 else {
1089 ctemp = chaine(0,egal-1);
1090 Analyze(ctemp.Data(),err,offset); if (err) return;
1091 Int_t optloc = fNoper-1;
1092
1093 ctemp = chaine(egal+1,lchain-egal-1);
1094 Analyze(ctemp.Data(),err,offset); if (err) return;
1095 fExpr[fNoper] = "==";
1096 actionCode = kEqual;
1097
1098 Bool_t isstring = IsString(fNoper-1);
1099 if (IsString(optloc) != isstring) {
1100 err = 45;
1101 chaine_error = "==";
1102 } else if (isstring) {
1103 actionCode = kStringEqual;
1104 }
1105 SetAction(fNoper,actionCode,actionParam);
1106 fNoper++;
1107 }
1108 } else if (diff != 0) {
1109 if (diff==1 || diff==lchain-1) {
1110 err=5;
1111 chaine_error = "!=";
1112 }
1113 else {
1114 ctemp = chaine(0,diff-1);
1115 Analyze(ctemp.Data(),err,offset); if (err) return;
1116 Int_t optloc = fNoper-1;
1117
1118 ctemp = chaine(diff+1,lchain-diff-1);
1119 Analyze(ctemp.Data(),err,offset); if (err) return;
1120 fExpr[fNoper] = "!=";
1121 actionCode = kNotEqual;
1122
1123 Bool_t isstring = IsString(fNoper-1);
1124 if (IsString(optloc) != isstring) {
1125 err = 45;
1126 chaine_error = "!=";
1127 } else if (isstring) {
1128 actionCode = kStringNotEqual;
1129 }
1130 SetAction(fNoper,actionCode,actionParam);
1131 fNoper++;
1132 }
1133 } else if (plus != 0) {
1134 if (plus==lchain) {
1135 err=5;
1136 chaine_error = "+";
1137 }
1138 else {
1139 ctemp = chaine(0,plus-1);
1140 Analyze(ctemp.Data(),err,offset); if (err) return;
1141 UInt_t leftopr = fNoper-1;
1142 ctemp = chaine(plus,lchain-plus);
1143 Analyze(ctemp.Data(),err,offset); if (err) return;
1144 fExpr[fNoper] = "+";
1145 actionCode = kAdd;
1146 SetAction(fNoper,actionCode,actionParam);
1147 fNoper++;
1148 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1149 }
1150 } else {
1151 if (moins != 0) {
1152 if (moins == 1) {
1153 ctemp = chaine(moins,lchain-moins);
1154 Analyze(ctemp.Data(),err,offset); if (err) return;
1155 fExpr[fNoper] = "-";
1156 actionCode = kSignInv;
1157 SetAction(fNoper,actionCode,actionParam);
1158 ++fNoper;
1159 if (!CheckOperands(fNoper-1,err)) return;
1160 } else {
1161 if (moins == lchain) {
1162 err=5;
1163 chaine_error = "-";
1164 } else {
1165 ctemp = chaine(0,moins-1);
1166 Analyze(ctemp.Data(),err,offset); if (err) return;
1167 UInt_t leftopr = fNoper-1;
1168 ctemp = chaine(moins,lchain-moins);
1169 Analyze(ctemp.Data(),err,offset); if (err) return;
1170 fExpr[fNoper] = "-";
1171 actionCode = kSubstract;
1172 SetAction(fNoper,actionCode,actionParam);
1173 fNoper++;
1174 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1175 }
1176 }
1177 } else if (modulo != 0) {
1178 if (modulo == 1 || modulo == lchain) {
1179 err=5;
1180 chaine_error="%";
1181 } else {
1182 ctemp = chaine(0,modulo-1);
1183 Analyze(ctemp.Data(),err,offset); if (err) return;
1184 UInt_t leftopr = fNoper-1;
1185 ctemp = chaine(modulo,lchain-modulo);
1186 Analyze(ctemp.Data(),err,offset); if (err) return;
1187 fExpr[fNoper] = "%";
1188 actionCode = kModulo;
1189 SetAction(fNoper,actionCode,actionParam);
1190 fNoper++;
1191 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1192 }
1193 } else if (rshift != 0) {
1194 if (rshift == 1 || rshift == lchain) {
1195 err=5;
1196 chaine_error=">>";
1197 } else {
1198 ctemp = chaine(0,rshift-1);
1199 Analyze(ctemp.Data(),err,offset); if (err) return;
1200 UInt_t leftopr = fNoper-1;
1201 ctemp = chaine(rshift+1,lchain-rshift-1);
1202 Analyze(ctemp.Data(),err,offset); if (err) return;
1203 fExpr[fNoper] = ">>";
1204 actionCode = kRightShift;
1205 SetAction(fNoper,actionCode,actionParam);
1206 fNoper++;
1207 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1208 }
1209 } else if (lshift != 0) {
1210 if (lshift == 1 || lshift == lchain) {
1211 err=5;
1212 chaine_error=">>";
1213 } else {
1214 ctemp = chaine(0,lshift-1);
1215 Analyze(ctemp.Data(),err,offset); if (err) return;
1216 UInt_t leftopr = fNoper-1;
1217 ctemp = chaine(lshift+1,lchain-lshift-1);
1218 Analyze(ctemp.Data(),err,offset); if (err) return;
1219 fExpr[fNoper] = ">>";
1220 actionCode = kLeftShift;
1221 SetAction(fNoper,actionCode,actionParam);
1222 fNoper++;
1223 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1224 }
1225 } else {
1226 if (multi != 0) {
1227 if (multi == 1 || multi == lchain) {
1228 err=5;
1229 chaine_error="*";
1230 }
1231 else {
1232 ctemp = chaine(0,multi-1);
1233 Analyze(ctemp.Data(),err,offset); if (err) return;
1234 UInt_t leftopr = fNoper-1;
1235 ctemp = chaine(multi,lchain-multi);
1236 Analyze(ctemp.Data(),err,offset); if (err) return;
1237 fExpr[fNoper] = "*";
1238 actionCode = kMultiply;
1239 SetAction(fNoper,actionCode,actionParam);
1240 fNoper++;
1241 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1242 }
1243 } else {
1244 if (divi != 0) {
1245 if (divi == 1 || divi == lchain) {
1246 err=5;
1247 chaine_error = "/";
1248 }
1249 else {
1250 ctemp = chaine(0,divi-1);
1251 Analyze(ctemp.Data(),err,offset); if (err) return;
1252 UInt_t leftopr = fNoper-1;
1253 ctemp = chaine(divi,lchain-divi);
1254 Analyze(ctemp.Data(),err,offset); if (err) return;
1255 fExpr[fNoper] = "/";
1256 actionCode = kDivide;
1257 SetAction(fNoper,actionCode,actionParam);
1258 fNoper++;
1259 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1260 }
1261 } else {
1262 if (puiss != 0) {
1263 if (puiss == 1 || puiss == lchain) {
1264 err = 5;
1265 chaine_error = "**";
1266 }
1267 else {
1268 if (chaine(lchain-2,2) == "^2") {
1269 ctemp = "sq(" + chaine(0,lchain-2) + ")";
1270 Analyze(ctemp.Data(),err,offset); if (err) return;
1271 } else {
1272 ctemp = chaine(0,puiss-1);
1273 Analyze(ctemp.Data(),err,offset); if (err) return;
1274 UInt_t leftopr = fNoper-1;
1275 ctemp = chaine(puiss,lchain-puiss);
1276 Analyze(ctemp.Data(),err,offset); if (err) return;
1277 fExpr[fNoper] = "^";
1278 actionCode = kpow;
1279 SetAction(fNoper,actionCode,actionParam);
1280 fNoper++;
1281 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1282 }
1283 }
1284 } else {
1285
1286 find=0;
1287
1288 // Check for a numerical expression
1289 {
1290 Bool_t hasDot = kFALSE;
1291 Bool_t isHexa = kFALSE;
1292 Bool_t hasExpo= kFALSE;
1293 if ((chaine(0,2)=="0x")||(chaine(0,2)=="0X")) isHexa=kTRUE;
1294 for (j=0; j<chaine.Length() && err==0; j++) {
1295 t=chaine[j];
1296 if (!isHexa) {
1297 if (j>0 && (chaine(j,1)=="e" || chaine(j,2)=="e+" || chaine(j,2)=="e-" || chaine(j,1)=="E" || chaine(j,2)=="E+" || chaine(j,2)=="E-")) {
1298 if (hasExpo) {
1299 err=26;
1300 chaine_error=chaine;
1301 }
1302 hasExpo = kTRUE;
1303 // The previous implementation allowed a '.' in the exponent.
1304 // That information was ignored (by sscanf), we now make it an error
1305 // hasDot = kFALSE;
1306 hasDot = kTRUE; // forbid any additional '.'
1307 if (chaine(j,2)=="e+" || chaine(j,2)=="e-" || chaine(j,2)=="E+" || chaine(j,2)=="E-") j++;
1308 }
1309 else {
1310 if (chaine(j,1) == "." && !hasDot) hasDot = kTRUE; // accept only one '.' in the number
1311 else {
1312 // The previous implementation was allowing ANYTHING after the '.' and thus
1313 // made legal code like '2.3 and fpx' and was just silently ignoring the
1314 // 'and fpx'.
1315 if (!strchr("0123456789",t) && (chaine(j,1)!="+" || j!=0)) {
1316 err = 30;
1317 chaine_error=chaine;
1318 }
1319 }
1320 }
1321 }
1322 else {
1323 if (!strchr("0123456789abcdefABCDEF",t) && (j>1)) {
1324 err = 30;
1325 chaine_error=chaine;
1326 }
1327 }
1328 }
1329 if (fNconst >= gMAXCONST) err = 27;
1330 if (!err) {
1331 if (!isHexa) {if (sscanf((const char*)chaine,"%lg",&vafConst) > 0) err = 0; else err =1;}
1332 else {if (sscanf((const char*)chaine,"%lx",&vafConst2) > 0) err = 0; else err=1;
1333 vafConst = (Double_t) vafConst2;}
1334 fExpr[fNoper] = chaine;
1335 k = -1;
1336 for (j=0;j<fNconst;j++) {
1337 if (vafConst == fConst[j] ) k= j;
1338 }
1339 if ( k < 0) { k = fNconst; fNconst++; fConst[k] = vafConst; }
1340 actionCode = kConstant;
1341 actionParam = k;
1342 SetAction(fNoper,actionCode,actionParam);
1343 fNoper++;
1344 }
1345 if (err==30) err=0;
1346 else find = kTRUE;
1347 }
1348
1349 // Look for an already defined expression
1350
1351 if (find==0) {
1352 {
1353 R__LOCKGUARD(gROOTMutex);
1354 oldformula = (const TFormula*)gROOT->GetListOfFunctions()->FindObject((const char*)chaine);
1355 }
1356 if (oldformula && strcmp(schain,oldformula->GetTitle())) {
1357 Int_t nprior = fNpar;
1358 Analyze(oldformula->GetExpFormula(),err,fNpar);
1359 // if the oldformula was using a normalized function (gausn or landaun) set also in this one
1360 if (oldformula->IsNormalized()) SetBit(kNormalized);
1361 if (err) return; // changes fNpar
1362 fNpar = nprior;
1363 find=1;
1364 if (!err) {
1365 Int_t npold = oldformula->GetNpar();
1366 fNpar += npold;
1367 for (Int_t ipar=0;ipar<npold;ipar++) {
1368 fParams[ipar+fNpar-npold] = oldformula->GetParameter(ipar);
1369 }
1370 }
1371 }
1372 }
1373 if (find == 0) {
1374
1375 // Check if chaine is a defined variable.
1376 // Note that DefinedVariable can be overloaded
1377
1378 ctemp = chaine;
1379 ctemp.ReplaceAll(escapedSlash, slash);
1380 Int_t action;
1381 k = DefinedVariable(ctemp,action);
1382 if (k==-3) {
1383 // Error message already issued
1384 err = 1;
1385 } else if (k==-2) {
1386 err = 31;
1387 chaine_error = ctemp;
1388 } else if ( k >= 0 ) {
1389 fExpr[fNoper] = ctemp;
1390 actionCode = action;
1391 actionParam = k;
1392 SetAction(fNoper,actionCode,actionParam);
1393 if (action==kDefinedString) fNstring++;
1394 else if (k <kMAXFOUND && !fAlreadyFound.TestBitNumber(k)) {
1395 fAlreadyFound.SetBitNumber(k);
1396 fNval++;
1397 }
1398 fNoper++;
1399 } else if (chaine(0,1) == "!") {
1400 ctemp = chaine(1,lchain-1);
1401 Analyze(ctemp.Data(),err,offset); if (err) return;
1402 fExpr[fNoper] = "!";
1403 actionCode = kNot;
1404 SetAction(fNoper,actionCode,actionParam);
1405 fNoper++;
1406 if (!CheckOperands(fNoper-1,err)) return;
1407 } else if (chaine(0,1)=="\"" && chaine(chaine.Length()-1,1)=="\"") {
1408 // It is a string !!!
1409 fExpr[fNoper] = chaine(1,chaine.Length()-2);
1410 actionCode = kStringConst;
1411 SetAction(fNoper,actionCode,actionParam);
1412 fNoper++;
1413 } else if (chaine(0,4) == "cos(") {
1414 ctemp = chaine(3,lchain-3);
1415 Analyze(ctemp.Data(),err,offset); if (err) return;
1416 fExpr[fNoper] = "cos";
1417 actionCode = kcos;
1418 SetAction(fNoper,actionCode,actionParam);
1419 fNoper++;
1420 if (!CheckOperands(fNoper-1,err)) return;
1421 } else if (chaine(0,4) == "sin(") {
1422 ctemp = chaine(3,lchain-3);
1423 Analyze(ctemp.Data(),err,offset); if (err) return;
1424 fExpr[fNoper] = "sin";
1425 actionCode = ksin;
1426 SetAction(fNoper,actionCode,actionParam);
1427 fNoper++;
1428 if (!CheckOperands(fNoper-1,err)) return;
1429 } else if (chaine(0,4) == "tan(") {
1430 ctemp = chaine(3,lchain-3);
1431 Analyze(ctemp.Data(),err,offset); if (err) return;
1432 fExpr[fNoper] = "tan";
1433 actionCode = ktan;
1434 SetAction(fNoper,actionCode,actionParam);
1435 fNoper++;
1436 if (!CheckOperands(fNoper-1,err)) return;
1437 } else if (chaine(0,5) == "acos(") {
1438 ctemp = chaine(4,lchain-4);
1439 Analyze(ctemp.Data(),err,offset); if (err) return;
1440 fExpr[fNoper] = "acos";
1441 actionCode = kacos;
1442 SetAction(fNoper,actionCode,actionParam);
1443 fNoper++;
1444 if (!CheckOperands(fNoper-1,err)) return;
1445 } else if (chaine(0,5) == "asin(") {
1446 ctemp = chaine(4,lchain-4);
1447 Analyze(ctemp.Data(),err,offset); if (err) return;
1448 fExpr[fNoper] = "asin";
1449 actionCode = kasin;
1450 SetAction(fNoper,actionCode,actionParam);
1451 fNoper++;
1452 if (!CheckOperands(fNoper-1,err)) return;
1453 } else if (chaine(0,5) == "atan(") {
1454 ctemp = chaine(4,lchain-4);
1455 Analyze(ctemp.Data(),err,offset); if (err) return;
1456 fExpr[fNoper] = "atan";
1457 actionCode = katan;
1458 SetAction(fNoper,actionCode,actionParam);
1459 fNoper++;
1460 if (!CheckOperands(fNoper-1,err)) return;
1461 } else if (chaine(0,5) == "cosh(") {
1462 ctemp = chaine(4,lchain-4);
1463 Analyze(ctemp.Data(),err,offset); if (err) return;
1464 fExpr[fNoper] = "cosh";
1465 actionCode = kcosh;
1466 SetAction(fNoper,actionCode,actionParam);
1467 fNoper++;
1468 if (!CheckOperands(fNoper-1,err)) return;
1469 } else if (chaine(0,5) == "sinh(") {
1470 ctemp = chaine(4,lchain-4);
1471 Analyze(ctemp.Data(),err,offset); if (err) return;
1472 fExpr[fNoper] = "sinh";
1473 actionCode = ksinh;
1474 SetAction(fNoper,actionCode,actionParam);
1475 fNoper++;;
1476 if (!CheckOperands(fNoper-1,err)) return;
1477 } else if (chaine(0,5) == "tanh(") {
1478 ctemp = chaine(4,lchain-4);
1479 Analyze(ctemp.Data(),err,offset); if (err) return;
1480 fExpr[fNoper] = "tanh";
1481 actionCode = ktanh;
1482 SetAction(fNoper,actionCode,actionParam);
1483 fNoper++;;
1484 if (!CheckOperands(fNoper-1,err)) return;
1485 } else if (chaine(0,6) == "acosh(") {
1486 ctemp = chaine(5,lchain-5);
1487 Analyze(ctemp.Data(),err,offset); if (err) return;
1488 fExpr[fNoper] = "acosh";
1489 actionCode = kacosh;
1490 SetAction(fNoper,actionCode,actionParam);
1491 fNoper++;;
1492 if (!CheckOperands(fNoper-1,err)) return;
1493 } else if (chaine(0,6) == "asinh(") {
1494 ctemp = chaine(5,lchain-5);
1495 Analyze(ctemp.Data(),err,offset); if (err) return;
1496 fExpr[fNoper] = "asinh";
1497 actionCode = kasinh;
1498 SetAction(fNoper,actionCode,actionParam);
1499 fNoper++;;
1500 if (!CheckOperands(fNoper-1,err)) return;
1501 } else if (chaine(0,6) == "atanh(") {
1502 ctemp = chaine(5,lchain-5);
1503 Analyze(ctemp.Data(),err,offset); if (err) return;
1504 fExpr[fNoper] = "atanh";
1505 actionCode = katanh;
1506 SetAction(fNoper,actionCode,actionParam);
1507 fNoper++;;
1508 if (!CheckOperands(fNoper-1,err)) return;
1509 } else if (chaine(0,3) == "sq(") {
1510 ctemp = chaine(2,lchain-2);
1511 Analyze(ctemp.Data(),err,offset); if (err) return;
1512 fExpr[fNoper] = "sq";
1513 actionCode = ksq;
1514 SetAction(fNoper,actionCode,actionParam);
1515 fNoper++;;
1516 if (!CheckOperands(fNoper-1,err)) return;
1517 } else if (chaine(0,4) == "log(") {
1518 ctemp = chaine(3,lchain-3);
1519 Analyze(ctemp.Data(),err,offset); if (err) return;
1520 fExpr[fNoper] = "log";
1521 actionCode = klog;
1522 SetAction(fNoper,actionCode,actionParam);
1523 fNoper++;;
1524 if (!CheckOperands(fNoper-1,err)) return;
1525 } else if (chaine(0,6) == "log10(") {
1526 ctemp = chaine(5,lchain-5);
1527 Analyze(ctemp.Data(),err,offset); if (err) return;
1528 fExpr[fNoper] = "log10";
1529 actionCode = klog10;
1530 SetAction(fNoper,actionCode,actionParam);
1531 fNoper++;;
1532 if (!CheckOperands(fNoper-1,err)) return;
1533 } else if (chaine(0,4) == "exp(") {
1534 ctemp = chaine(3,lchain-3);
1535 Analyze(ctemp.Data(),err,offset); if (err) return;
1536 fExpr[fNoper] = "exp";
1537 actionCode = kexp;
1538 SetAction(fNoper,actionCode,actionParam);
1539 fNoper++;;
1540 if (!CheckOperands(fNoper-1,err)) return;
1541 } else if (chaine(0,4) == "abs(") {
1542 ctemp = chaine(3,lchain-3);
1543 Analyze(ctemp.Data(),err,offset); if (err) return;
1544 fExpr[fNoper] = "abs";
1545 actionCode = kabs;
1546 SetAction(fNoper,actionCode,actionParam);
1547 fNoper++;;
1548 if (!CheckOperands(fNoper-1,err)) return;
1549 } else if (chaine(0,5) == "sign(") {
1550 ctemp = chaine(4,lchain-4);
1551 Analyze(ctemp.Data(),err,offset); if (err) return;
1552 fExpr[fNoper] = "sign";
1553 actionCode = ksign;
1554 SetAction(fNoper,actionCode,actionParam);
1555 fNoper++;;
1556 if (!CheckOperands(fNoper-1,err)) return;
1557 } else if (chaine(0,4) == "int(") {
1558 ctemp = chaine(3,lchain-3);
1559 Analyze(ctemp.Data(),err,offset); if (err) return;
1560 fExpr[fNoper] = "int";
1561 actionCode = kint;
1562 SetAction(fNoper,actionCode,actionParam);
1563 fNoper++;;
1564 if (!CheckOperands(fNoper-1,err)) return;
1565 } else if (chaine == "rndm" || chaine(0,5) == "rndm(") {
1566 fExpr[fNoper] = "rndm";
1567 actionCode = krndm;
1568 SetAction(fNoper,actionCode,actionParam);
1569 fNoper++;;
1570 } else if (chaine(0,5) == "sqrt(") {
1571 ctemp = chaine(4,lchain-4);
1572 Analyze(ctemp.Data(),err,offset); if (err) return;
1573 fExpr[fNoper] = "sqrt";
1574 actionCode = ksqrt;
1575 SetAction(fNoper,actionCode,actionParam);
1576 fNoper++;;
1577 if (!CheckOperands(fNoper-1,err)) return;
1578
1579 // Look for an exponential
1580
1581 } else if ( chaine == "expo" || chaine(0,5)=="expo("
1582 || (lchain==5 && chaine(1,4)=="expo")
1583 || (lchain==6 && chaine(2,4)=="expo")
1584 || chaine(1,5)=="expo(" || chaine(2,5)=="expo(" ) {
1585 chaine1ST=chaine;
1586 if (chaine(1,4) == "expo") {
1587 ctemp=chaine(0,1);
1588 if (ctemp=="x") {
1589 inter2=0;
1590 if (fNdim < 1) fNdim = 1; }
1591 else if (ctemp=="y") {
1592 inter2=1;
1593 if (fNdim < 2) fNdim = 2; }
1594 else if (ctemp=="z") {
1595 inter2=2;
1596 if (fNdim < 3) fNdim = 3; }
1597 else if (ctemp=="t") {
1598 inter2=3;
1599 if (fNdim < 4) fNdim = 4; }
1600 else {
1601 err=26; // unknown name;
1602 chaine_error=chaine1ST;
1603 }
1604 chaine=chaine(1,lchain-1);
1605 lchain=chaine.Length();
1606 } else inter2=0;
1607 if (chaine(2,4) == "expo") {
1608 if (chaine(0,2) != "xy") {
1609 err=26; // unknown name
1610 chaine_error=chaine1ST;
1611 }
1612 else {
1613 inter2=5;
1614 if (fNdim < 2) fNdim = 2;
1615 chaine=chaine(2,lchain-2);
1616 lchain=chaine.Length();
1617 }
1618 }
1619 if (lchain == 4) {
1620 if (fNpar>=gMAXPAR) err=7; // too many parameters
1621 if (!err) {
1622 fExpr[fNoper] = chaine1ST;
1623 actionCode = kexpo + inter2;
1624 actionParam = offset;
1625 SetAction(fNoper,actionCode,actionParam);
1626 if (inter2 == 5+offset && fNpar < 3+offset) fNpar = 3+offset;
1627 if (fNpar < 2+offset) fNpar = 2+offset;
1628 if (fNpar>=gMAXPAR) err=7; // too many parameters
1629 if (!err) {
1630 fNoper++;
1631 if (fNdim < 1) fNdim = 1;
1632 if (fNpar == 2) SetNumber(200);
1633 }
1634 }
1635 } else if (chaine(4,1) == "(") {
1636 ctemp = chaine(5,lchain-6);
1637 fExpr[fNoper] = chaine1ST;
1638 for (j=0; j<ctemp.Length(); j++) {
1639 t=ctemp[j];
1640 if (strchr("0123456789",t)==0 && (ctemp(j,1)!="+" || j!=0)) {
1641 err=20;
1642 chaine_error=chaine1ST;
1643 }
1644 }
1645 if (err==0) {
1646 sscanf(ctemp.Data(),"%d",&inter);
1647 if (inter>=0) {
1648 inter += offset;
1649 actionCode = kexpo + inter2;
1650 actionParam = inter;
1651 SetAction(fNoper,actionCode,actionParam);
1652 if (inter2 == 5) inter++;
1653 if (inter+2>fNpar) fNpar = inter+2;
1654 if (fNpar>=gMAXPAR) err=7; // too many parameters
1655 if (!err) fNoper++;
1656 if (fNpar == 2) SetNumber(200);
1657 } else err=20;
1658 } else err = 20; // non integer value for parameter number
1659 } else {
1660 err=26; // unknown name
1661 chaine_error=chaine;
1662 }
1663
1664 // Look for gaus, xgaus,ygaus,xygaus
1665
1666 } else if (chaine=="gaus"
1667 || (lchain==5 && chaine(1,4)=="gaus")
1668 || (lchain==6 && chaine(2,4)=="gaus")
1669 || chaine(0,5)=="gaus(" || chaine(1,5)=="gaus(" || chaine(2,5)=="gaus(") {
1670 chaine1ST=chaine;
1671 if (chaine(1,4) == "gaus") {
1672 ctemp=chaine(0,1);
1673 if (ctemp=="x") {
1674 inter2=0;
1675 if (fNdim < 1) fNdim = 1; }
1676 else if (ctemp=="y") {
1677 inter2=1;
1678 if (fNdim < 2) fNdim = 2; }
1679 else if (ctemp=="z") {
1680 inter2=2;
1681 if (fNdim < 3) fNdim = 3; }
1682 else if (ctemp=="t") {
1683 inter2=3;
1684 if (fNdim < 4) fNdim = 4; }
1685 else {
1686 err=26; // unknown name
1687 chaine_error=chaine1ST;
1688 }
1689 chaine=chaine(1,lchain-1);
1690 lchain=chaine.Length();
1691 } else inter2=0;
1692 if (chaine(2,4) == "gaus") {
1693 if (chaine(0,2) != "xy") {
1694 err=26; // unknown name
1695 chaine_error=chaine1ST;
1696 }
1697 else {
1698 inter2=5;
1699 if (fNdim < 2) fNdim = 2;
1700 chaine=chaine(2,lchain-2);
1701 lchain=chaine.Length();
1702 SetNumber(110); // xygaus
1703 }
1704 }
1705 if (lchain == 4 && err==0) {
1706 if (fNpar>=gMAXPAR) err=7; // too many parameters
1707 if (!err) {
1708 fExpr[fNoper] = chaine1ST;
1709 actionCode = kgaus + inter2;
1710 actionParam = offset;
1711 SetAction(fNoper,actionCode,actionParam);
1712 if (inter2 == 5+offset && fNpar < 5+offset) fNpar = 5+offset;
1713 if (3+offset>fNpar) fNpar = 3+offset;
1714 if (fNpar>=gMAXPAR) err=7; // too many parameters
1715 if (!err) {
1716 fNoper++;
1717 if (fNdim < 1) fNdim = 1;
1718 if (fNpar == 3) SetNumber(100);
1719 }
1720 }
1721 } else if (chaine(4,1) == "(" && err==0) {
1722 ctemp = chaine(5,lchain-6);
1723 fExpr[fNoper] = chaine1ST;
1724 for (j=0; j<ctemp.Length(); j++) {
1725 t=ctemp[j];
1726 if (strchr("0123456789",t)==0 && (ctemp(j,1)!="+" || j!=0)) {
1727 err=20;
1728 chaine_error=chaine1ST;
1729 }
1730 }
1731 if (err==0) {
1732 sscanf(ctemp.Data(),"%d",&inter);
1733 if (inter >= 0) {
1734 inter += offset;
1735 actionCode = kgaus + inter2;
1736 actionParam = inter;
1737 SetAction(fNoper,actionCode,actionParam);
1738 if (inter2 == 5) inter += 2;
1739 if (inter+3>fNpar) fNpar = inter+3;
1740 if (fNpar>=gMAXPAR) err=7; // too many parameters
1741 if (!err) fNoper++;
1742 if(fNpar == 3) SetNumber(100);
1743 } else err = 20; // non integer value for parameter number
1744 }
1745 } else if (err==0) {
1746 err=26; // unknown name
1747 chaine_error=chaine1ST;
1748 }
1749
1750 // Look for landau, xlandau,ylandau,xylandau
1751
1752 } else if (chaine=="landau" || (lchain==7 && chaine(1,6)=="landau")
1753 || (lchain==8 && chaine(2,6)=="landau")
1754 || chaine(0,7)=="landau(" || chaine(1,7)=="landau(" || chaine(2,7)=="landau(") {
1755 chaine1ST=chaine;
1756 if (chaine(1,6) == "landau") {
1757 ctemp=chaine(0,1);
1758 if (ctemp=="x") {
1759 inter2=0;
1760 if (fNdim < 1) fNdim = 1; }
1761 else if (ctemp=="y") {
1762 inter2=1;
1763 if (fNdim < 2) fNdim = 2; }
1764 else if (ctemp=="z") {
1765 inter2=2;
1766 if (fNdim < 3) fNdim = 3; }
1767 else if (ctemp=="t") {
1768 inter2=3;
1769 if (fNdim < 4) fNdim = 4; }
1770 else {
1771 err=26; // unknown name
1772 chaine_error=chaine1ST;
1773 }
1774 chaine=chaine(1,lchain-1);
1775 lchain=chaine.Length();
1776 } else inter2=0;
1777 if (chaine(2,6) == "landau") {
1778 if (chaine(0,2) != "xy") {
1779 err=26; // unknown name
1780 chaine_error=chaine1ST;
1781 }
1782 else {
1783 inter2=5;
1784 if (fNdim < 2) fNdim = 2;
1785 chaine=chaine(2,lchain-2);
1786 lchain=chaine.Length();
1787 SetNumber(410);
1788 }
1789 }
1790 if (lchain == 6 && err==0) {
1791 if (fNpar>=gMAXPAR) err=7; // too many parameters
1792 if (!err) {
1793 fExpr[fNoper] = chaine1ST;
1794 actionCode = klandau + inter2;
1795 actionParam = offset;
1796 SetAction(fNoper,actionCode,actionParam);
1797 if (inter2 == 5+offset && fNpar < 5+offset) fNpar = 5+offset;
1798 if (3+offset>fNpar) fNpar = 3+offset;
1799 if (fNpar>=gMAXPAR) err=7; // too many parameters
1800 if (!err) {
1801 fNoper++;
1802 if (fNdim < 1) fNdim = 1;
1803 if (fNpar == 3) SetNumber(400);
1804 }
1805 }
1806 } else if (chaine(6,1) == "(" && err==0) {
1807 ctemp = chaine(7,lchain-8);
1808 fExpr[fNoper] = chaine1ST;
1809 for (j=0; j<ctemp.Length(); j++) {
1810 t=ctemp[j];
1811 if (strchr("0123456789",t)==0 && (ctemp(j,1)!="+" || j!=0)) {
1812 err=20;
1813 chaine_error=chaine1ST;
1814 }
1815 }
1816 if (err==0) {
1817 sscanf(ctemp.Data(),"%d",&inter);
1818 if (inter >= 0) {
1819 inter += offset;
1820 actionCode = klandau + inter2;
1821 actionParam = inter;
1822 SetAction(fNoper,actionCode,actionParam);
1823 if (inter2 == 5) inter += 2;
1824 if (inter+3>fNpar) fNpar = inter+3;
1825 if (fNpar>=gMAXPAR) err=7; // too many parameters
1826 if (!err) fNoper++;
1827 if (fNpar == 3) SetNumber(400);
1828 } else err = 20; // non integer value for parameter number
1829 }
1830 } else if (err==0) {
1831 err=26; // unknown name
1832 chaine_error=chaine1ST;
1833 }
1834
1835 // Look for a polynomial
1836
1837 } else if (chaine(0,3) == "pol" || chaine(1,3) == "pol") {
1838 chaine1ST=chaine;
1839 if (chaine(1,3) == "pol") {
1840 ctemp=chaine(0,1);
1841 if (ctemp=="x") {
1842 inter2=1;
1843 if (fNdim < 1) fNdim = 1; }
1844 else if (ctemp=="y") {
1845 inter2=2;
1846 if (fNdim < 2) fNdim = 2; }
1847 else if (ctemp=="z") {
1848 inter2=3;
1849 if (fNdim < 3) fNdim = 3; }
1850 else if (ctemp=="t") {
1851 inter2=4;
1852 if (fNdim < 4) fNdim = 4; }
1853 else {
1854 err=26; // unknown name;
1855 chaine_error=chaine1ST;
1856 }
1857 chaine=chaine(1,lchain-1);
1858 lchain=chaine.Length();
1859 } else inter2=1;
1860 if (chaine(lchain-1,1) == ")") {
1861 nomb = 0;
1862 for (j=3;j<lchain;j++) if (chaine(j,1)=="(" && nomb == 0) nomb = j;
1863 if (nomb == 3) err = 23; // degree of polynomial not specified
1864 if (nomb == 0) err = 40; // '(' is expected
1865 ctemp = chaine(nomb+1,lchain-nomb-2);
1866 for (j=0; j<ctemp.Length(); j++) {
1867 t=ctemp[j];
1868 if (strchr("0123456789",t)==0 && (ctemp(j,1)!="+" || j!=0)) {
1869 err=20;
1870 chaine_error=chaine1ST;
1871 }
1872 }
1873 if (!err) {
1874 sscanf(ctemp.Data(),"%d",&inter);
1875 if (inter < 0) err = 20;
1876 }
1877 }
1878 else {
1879 nomb = lchain;
1880 inter = 0;
1881 }
1882 if (!err) {
1883 inter--;
1884 ctemp = chaine(3,nomb-3);
1885 if (sscanf(ctemp.Data(),"%d",&n) > 0) {
1886 if (n < 0 ) err = 24; //Degree of polynomial must be positive
1887 if (n >= 20) err = 25; //Degree of polynomial must be less than 20
1888 } else err = 20;
1889 }
1890 if (!err) {
1891 fExpr[fNoper] = chaine1ST;
1892 actionCode = kpol+(inter2-1);
1893 actionParam = n*100+inter+2;
1894 SetAction(fNoper,actionCode,actionParam);
1895 if (inter+n+1>=fNpar) fNpar = inter + n + 2;
1896 if (fNpar>=gMAXPAR) err=7; // too many parameters
1897 if (!err) {
1898 fNoper++;
1899 if (fNdim < 1) fNdim = 1;
1900 SetNumber(300+n);
1901 }
1902 }
1903
1904 // Look for pow,atan2,etc
1905
1906 } else if (chaine(0,4) == "pow(") {
1907 compt = 4; nomb = 0; virgule = 0; nest=0;
1908 while(compt != lchain) {
1909 compt++;
1910 if (chaine(compt-1,1) == "(") nest++;
1911 else if (chaine(compt-1,1) == ")") nest--;
1912 else if (chaine(compt-1,1) == "," && nest==0) {
1913 nomb++;
1914 if (nomb == 1 && virgule == 0) virgule = compt;
1915 }
1916 }
1917 if (nomb != 1) err = 22; // There are plus or minus than 2 arguments for pow
1918 else {
1919 ctemp = chaine(4,virgule-5);
1920 Analyze(ctemp.Data(),err,offset); if (err) return;
1921 UInt_t leftopr = fNoper-1;
1922 ctemp = chaine(virgule,lchain-virgule-1);
1923 Analyze(ctemp.Data(),err,offset); if (err) return;
1924 fExpr[fNoper] = "^";
1925 actionCode = kpow;
1926 SetAction(fNoper,actionCode,actionParam);
1927 fNoper++;
1928 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1929 }
1930 } else if (chaine(0,7) == "strstr(") {
1931 compt = 7; nomb = 0; virgule = 0; nest=0;
1932 inString = false;
1933 while(compt != lchain) {
1934 compt++;
1935 if (chaine(compt-1,1) == "\"") {
1936 inString = !inString;
1937 } else if (!inString) {
1938 if (chaine(compt-1,1) == "(") nest++;
1939 else if (chaine(compt-1,1) == ")") nest--;
1940 else if (chaine(compt-1,1) == "," && nest==0) {
1941 nomb++;
1942 if (nomb == 1 && virgule == 0) virgule = compt;
1943 }
1944 }
1945 }
1946 if (nomb != 1) err = 28; // There are plus or minus than 2 arguments for strstr
1947 else {
1948 ctemp = chaine(7,virgule-8);
1949 Analyze(ctemp.Data(),err,offset); if (err) return;
1950 Int_t optloc = fNoper-1;
1951
1952 ctemp = chaine(virgule,lchain-virgule-1);
1953 Analyze(ctemp.Data(),err,offset); if (err) return;
1954 fExpr[fNoper] = "strstr";
1955 actionCode = kstrstr;
1956 SetAction(fNoper,actionCode,actionParam);
1957 fNoper++;
1958
1959 if ( !IsString(optloc) || !IsString(fNoper-2) ) {
1960 err = 46;
1961 chaine_error = "strstr";
1962 }
1963 }
1964 } else if (chaine(0,4) == "min(") {
1965 compt = 4; nomb = 0; virgule = 0; nest=0;
1966 while(compt != lchain) {
1967 compt++;
1968 if (chaine(compt-1,1) == "(") nest++;
1969 else if (chaine(compt-1,1) == ")") nest--;
1970 else if (chaine(compt-1,1) == "," && nest==0) {
1971 nomb++;
1972 if (nomb == 1 && virgule == 0) virgule = compt;
1973 }
1974 }
1975 if (nomb != 1) {
1976 err = 44; // There are plus or minus than 2 arguments for min
1977 err_hint = 3;
1978 }
1979 else {
1980 ctemp = chaine(4,virgule-5);
1981 Analyze(ctemp.Data(),err,offset); if (err) return;
1982 UInt_t leftopr = fNoper-1;
1983 ctemp = chaine(virgule,lchain-virgule-1);
1984 Analyze(ctemp.Data(),err,offset); if (err) return;
1985 fExpr[fNoper] = "min";
1986 actionCode = kmin;
1987 SetAction(fNoper,actionCode,actionParam);
1988 fNoper++;
1989 if (!CheckOperands(leftopr,fNoper-1,err)) return;
1990 }
1991 } else if (chaine(0,4) == "max(") {
1992 compt = 4; nomb = 0; virgule = 0; nest=0;
1993 while(compt != lchain) {
1994 compt++;
1995 if (chaine(compt-1,1) == "(") nest++;
1996 else if (chaine(compt-1,1) == ")") nest--;
1997 else if (chaine(compt-1,1) == "," && nest==0) {
1998 nomb++;
1999 if (nomb == 1 && virgule == 0) virgule = compt;
2000 }
2001 }
2002 if (nomb != 1) {
2003 err = 44; // There are plus or minus than 2 arguments for min
2004 err_hint = 3;
2005 }
2006 else {
2007 ctemp = chaine(4,virgule-5);
2008 Analyze(ctemp.Data(),err,offset); if (err) return;
2009 UInt_t leftopr = fNoper-1;
2010 ctemp = chaine(virgule,lchain-virgule-1);
2011 Analyze(ctemp.Data(),err,offset); if (err) return;
2012 fExpr[fNoper] = "max";
2013 actionCode = kmax;
2014 SetAction(fNoper,actionCode,actionParam);
2015 fNoper++;
2016 if (!CheckOperands(leftopr,fNoper-1,err)) return;
2017 }
2018
2019 } else if (chaine(0,6) == "atan2(") {
2020 compt = 6; nomb = 0; virgule = 0; nest=0;
2021 while(compt != lchain) {
2022 compt++;
2023 if (chaine(compt-1,1) == "(") nest++;
2024 else if (chaine(compt-1,1) == ")") nest--;
2025 else if (chaine(compt-1,1) == "," && nest==0) {
2026 nomb++;
2027 if (nomb == 1 && virgule == 0) virgule = compt;
2028 }
2029 }
2030 if (nomb != 1) err = 21; //{ There are plus or minus than 2 arguments for atan2
2031 else {
2032 ctemp = chaine(6,virgule-7);
2033 Analyze(ctemp.Data(),err,offset); if (err) return;
2034 UInt_t leftopr = fNoper-1;
2035 ctemp = chaine(virgule,lchain-virgule-1);
2036 Analyze(ctemp.Data(),err,offset); if (err) return;
2037 fExpr[fNoper] = "atan2";
2038 actionCode = katan2;
2039 SetAction(fNoper,actionCode,actionParam);
2040 fNoper++;
2041 if (!CheckOperands(leftopr,fNoper-1,err)) return;
2042 }
2043 } else if (chaine(0,5) == "fmod(") {
2044 compt = 5; nomb = 0; virgule = 0; nest=0;
2045 while(compt != lchain) {
2046 compt++;
2047 if (chaine(compt-1,1) == "(") nest++;
2048 else if (chaine(compt-1,1) == ")") nest--;
2049 else if (chaine(compt-1,1) == "," && nest==0) {
2050 nomb++;
2051 if (nomb == 1 && virgule == 0) virgule = compt;
2052 }
2053 }
2054 if (nomb != 1) {
2055 err = 44; // There are plus or minus than 2 arguments for fmod
2056 err_hint = 4;
2057 }
2058 else {
2059 ctemp = chaine(5,virgule-6);
2060 Analyze(ctemp.Data(),err,offset); if (err) return;
2061 UInt_t leftopr = fNoper-1;
2062 ctemp = chaine(virgule,lchain-virgule-1);
2063 Analyze(ctemp.Data(),err,offset); if (err) return;
2064 fExpr[fNoper] = "fmod";
2065 actionCode = kfmod;
2066 SetAction(fNoper,actionCode,actionParam);
2067 fNoper++;
2068 if (!CheckOperands(leftopr,fNoper-1,err)) return;
2069 }
2070 } else if (AnalyzeFunction(chaine,err,offset) || err) { // The '||err' is to grab an error coming from AnalyzeFunction
2071 if (err) {
2072 chaine_error = chaine;
2073 } else {
2074 // We have a function call. Note that all the work was already,
2075 // eventually done in AnalyzeFunction
2076 //fprintf(stderr,"We found a foreign function in %s\n",chaine.Data());
2077 }
2078 } else if (chaine(0,1) == "[" && chaine(lchain-1,1) == "]") {
2079 fExpr[fNoper] = chaine;
2080 fNoper++;
2081 ctemp = chaine(1,lchain-2);
2082 for (j=0; j<ctemp.Length(); j++) {
2083 t=ctemp[j];
2084 if (strchr("0123456789",t)==0 && (ctemp(j,1)!="+" || j!=0)) {
2085 err=20;
2086 chaine_error=chaine1ST; // le numero ? de par[?] n'est pas un entier }
2087 }
2088 }
2089 if (!err) {
2090 sscanf(ctemp.Data(),"%d",&valeur);
2091 actionCode = kParameter;
2092 actionParam = offset + valeur;
2093 SetAction(fNoper-1, actionCode, actionParam);
2094 fExpr[fNoper-1] = "[";
2095 fExpr[fNoper-1] = (fExpr[fNoper-1] + (long int)(valeur+offset)) + "]";
2096 }
2097 } else if (chaine == "pi") {
2098 fExpr[fNoper] = "pi";
2099 actionCode = kpi;
2100 SetAction(fNoper,actionCode,actionParam);
2101 fNoper++;
2102 }
2103 else {
2104
2105 // None of the above.
2106
2107 err = 30;
2108 }
2109 }
2110 }
2111 }
2112 }
2113 }
2114 }
2115
2116 // Overflows
2117 if (fNoper>=gMAXOP) err=6; // too many operators
2118
2119 }
2120
2121 // errors!
2122 if (err>1) {
2123 TString er = "";
2124 chaine_error = "\""+chaine_error+"\"";
2125 switch(err) {
2126 case 2 : er = " Invalid Floating Point Operation"; break;
2127 case 4 : er = " Empty String"; break;
2128 case 5 : er = " Invalid Syntax " + chaine_error; break;
2129 case 6 : er = " Too many operators !"; break;
2130 case 7 : er = " Too many parameters !"; break;
2131 case 10 : er = " z specified but not x and y"; break;
2132 case 11 : er = " z and y specified but not x"; break;
2133 case 12 : er = " y specified but not x"; break;
2134 case 13 : er = " z and x specified but not y"; break;
2135 case 20 : er = " Non integer value for parameter number : " + chaine_error; break;
2136 case 21 : er = " ATAN2 requires two arguments"; break;
2137 case 22 : er = " POW requires two arguments"; break;
2138 case 23 : er = " Degree of polynomial not specified"; break;
2139 case 24 : er = " Degree of polynomial must be positive"; break;
2140 case 25 : er = " Degree of polynomial must be less than 20"; break;
2141 case 26 : er = " Unknown name : " + chaine_error; break;
2142 case 27 : er = " Too many constants in expression"; break;
2143 case 28 : er = " strstr requires two arguments"; break;
2144 case 29 : er = " TFormula can only call interpreted and compiled functions that return a numerical type: " + chaine_error; break;
2145 case 30 : er = " Bad numerical expression : " + chaine_error; break;
2146 case 31 : er = " Part of the Variable " + chaine_error; er += " exists but some of it is not accessible or useable"; break;
2147 case 40 : er = " '(' is expected"; break;
2148 case 41 : er = " ')' is expected"; break;
2149 case 42 : er = " '[' is expected"; break;
2150 case 43 : er = " ']' is expected"; break;
2151 case 44 : er = " The function '" + chaine(0,err_hint) + "' requires two arguments."; break;
2152 case 45 : er = "The operator " + chaine_error + " requires a numerical operand."; break;
2153 case 46 : er = "Both operands of the operator " + chaine_error + " have to be either numbers or strings."; break;
2154 case 47 : er = chaine_error + " requires 2 string arguments"; break;
2155 }
2156 Error("Compile", "%s", er.Data());
2157 err=1;
2158 }
2159
2160}
2161
2162////////////////////////////////////////////////////////////////////////////////
2163/// Check whether the operand at 'oper-1' is compatible with the operation
2164/// at 'oper'.
2165
2166Bool_t TFormula::CheckOperands(Int_t oper, Int_t &err)
2167{
2168 if ( IsString(oper-1) && !StringToNumber(oper-1) ) {
2169 Error("Compile","\"%s\" requires a numerical operand.",fExpr[oper].Data());
2170 err = 45;
2171 return kFALSE;
2172 }
2173 return kTRUE;
2174}
2175
2176////////////////////////////////////////////////////////////////////////////////
2177/// Check whether the operands at 'leftoper' and 'oper-1' are compatible with
2178/// the operation at 'oper'.
2179
2180Bool_t TFormula::CheckOperands(Int_t leftoper, Int_t oper, Int_t &err)
2181{
2182 if ( IsString(oper-1) || IsString(leftoper) ) {
2183 if (IsString(oper-1) && StringToNumber(oper-1)) {
2184 return kTRUE;
2185 }
2186 if (IsString(leftoper) && StringToNumber(leftoper)) {
2187 return kTRUE;
2188 }
2189 Error("Compile","\"%s\" requires two numerical operands.",fExpr[oper].Data());
2190 err = 46;
2191 return kFALSE;
2192 }
2193 return kTRUE;
2194}
2195
2196////////////////////////////////////////////////////////////////////////////////
2197/// Try to 'demote' a string into an array bytes. If this is not possible,
2198/// return false.
2199
2200Bool_t TFormula::StringToNumber(Int_t /* code */)
2201{
2202 // In TFormula proper, we can not handle array of bytes ...
2203 return kFALSE;
2204}
2205
2206////////////////////////////////////////////////////////////////////////////////
2207/// Resets the objects.
2208///
2209/// Resets the object to its state before compilation.
2210
2211void TFormula::Clear(Option_t * /*option*/ )
2212{
2213 ClearFormula();
2214}
2215
2216////////////////////////////////////////////////////////////////////////////////
2217/// Resets the objects.
2218///
2219/// Resets the object to its state before compilation.
2220
2221void TFormula::ClearFormula(Option_t * /*option*/ )
2222{
2223 fNdim = 0;
2224 fNpar = 0;
2225 fNoper = 0;
2226 fNconst = 0;
2227 fNumber = 0;
2228 fNstring= 0;
2229 fNval = 0;
2230
2231 if (fExpr) { delete [] fExpr; fExpr = 0;}
2232 if (fNames) { delete [] fNames; fNames = 0;}
2233 if (fOper) { delete [] fOper; fOper = 0;}
2234 if (fConst) { delete [] fConst; fConst = 0;}
2235 if (fParams) { delete [] fParams; fParams = 0;}
2236 fFunctions.Delete();
2237 fLinearParts.Delete();
2238 //
2239 //MI change
2240 if (fPredefined) { delete [] fPredefined; fPredefined = 0;}
2241 if (fOperOffset) { delete [] fOperOffset; fOperOffset = 0;}
2242 if (fExprOptimized) { delete [] fExprOptimized; fExprOptimized = 0;}
2243 if (fOperOptimized) { delete [] fOperOptimized; fOperOptimized = 0;}
2244 // should we also remove the object from the list?
2245 // gROOT->GetListOfFunctions()->Remove(this);
2246 // if we don't, what happens if it fails the new compilation?
2247}
2248
2249namespace {
2250 template <class T>
2251 inline static void ResizeArrayIfAllocated(T*& oldArray, int newSize){
2252
2253 // Don't do anything in this case.
2254 if (!oldArray || newSize <=0) return;
2255
2256 T* newArray = new T[newSize];
2257 std::copy(oldArray, oldArray+newSize, newArray);
2258 delete [] oldArray;
2259 oldArray = newArray;
2260 }
2261}
2262
2263////////////////////////////////////////////////////////////////////////////////
2264/// Compile expression already stored in fTitle.
2265///
2266/// Loop on all subexpressions of formula stored in fTitle
2267///
2268/// If you overload this member function, you also HAVE TO
2269/// never call the constructor:
2270///
2271/// ~~~ {.cpp}
2272/// TFormula::TFormula(const char *name,const char *expression)
2273/// ~~~
2274///
2275/// and write your own constructor
2276///
2277/// ~~~ {.cpp}
2278/// MyClass::MyClass(const char *name,const char *expression) : TFormula()
2279/// ~~~
2280///
2281/// which has to call the TFormula default constructor and whose implementation
2282/// should be similar to the implementation of the normal TFormula constructor
2283///
2284/// This is necessary because the normal TFormula constructor call indirectly
2285/// the virtual member functions Analyze, DefaultString, DefaultValue
2286/// and DefaultVariable.
2287///
2288/// \image html TFormula_compile.png
2289
2290Int_t TFormula::Compile(const char *expression)
2291{
2292 Int_t i,j,lc,valeur,err;
2293 TString ctemp;
2294
2295 ClearFormula();
2296
2297 // If expression is not empty, take it, otherwise take the title
2298 if (strlen(expression)) SetTitle(expression);
2299
2300 TString chaine = GetTitle();
2301
2302 if (chaine.Contains(";")) {
2303 char *sctemp = new char[chaine.Length()+1];
2304 strlcpy(sctemp,chaine.Data(),chaine.Length()+1);
2305 char *semicol = (char*)strstr(sctemp,";");
2306 if (semicol) *semicol = 0;
2307 chaine = sctemp;
2308 delete [] sctemp;
2309 }
2310
2311 // if the function is linear, process it and fill the array of linear parts
2312 if (TestBit(kLinear)){
2313 ProcessLinear(chaine);
2314 }
2315
2316 // see static function SetMaxima to change the gMAX.. default values
2317 fExpr = new TString[gMAXOP];
2318 fConst = new Double_t[gMAXCONST];
2319 fParams = new Double_t[gMAXPAR];
2320 fNames = new TString[gMAXPAR];
2321 fOper = new Int_t[gMAXOP];
2322 for (i=0; i<gMAXPAR; i++) {
2323 fParams[i] = 0;
2324 fNames[i] = "";
2325 }
2326 for (i=0; i<gMAXOP; i++) {
2327 fExpr[i] = "";
2328 fOper[i] = 0;
2329 }
2330 for (i=0; i<gMAXCONST; i++)
2331 fConst[i] = 0;
2332
2333 // Substitution of some operators to C++ style
2334 Bool_t inString = false;
2335 for (i=1; i<=chaine.Length(); i++) {
2336 lc =chaine.Length();
2337 if (chaine(i-1,1) == "\"") inString = !inString;
2338 if (inString) continue;
2339 if (chaine(i-1,2) == "**") {
2340 chaine = chaine(0,i-1) + "^" + chaine(i+1,lc-i-1);
2341 i=0;
2342 } else if (chaine(i-1,2) == "++") {
2343 chaine = chaine(0,i) + chaine(i+1,lc-i-1);
2344 i=0;
2345 } else if (chaine(i-1,2) == "+-" || chaine(i-1,2) == "-+") {
2346 chaine = chaine(0,i-1) + "-" + chaine(i+1,lc-i-1);
2347 i=0;
2348 } else if (chaine(i-1,2) == "--") {
2349 chaine = chaine(0,i-1) + "+" + chaine(i+1,lc-i-1);
2350 i=0;
2351 } else if (chaine(i-1,2) == "->") {
2352 chaine = chaine(0,i-1) + "." + chaine(i+1,lc-i-1);
2353 i=0;
2354 } else if (chaine(i-1,1) == "[") {
2355 for (j=1;j<=chaine.Length()-i;j++) {
2356 if (chaine(j+i-1,1) == "]" || j+i > chaine.Length()) break;
2357 }
2358 ctemp = chaine(i,j-1);
2359 valeur=0;
2360 sscanf(ctemp.Data(),"%d",&valeur);
2361 if (valeur >= fNpar) fNpar = valeur+1;
2362 } else if (chaine(i-1,1) == " ") {
2363 chaine = chaine(0,i-1)+chaine(i,lc-i);
2364 i=0;
2365 }
2366 }
2367 err = 0;
2368 Analyze((const char*)chaine,err);
2369
2370 // if no parameters delete arrays fParams and fNames
2371 if (!fNpar) {
2372 delete [] fParams; fParams = 0;
2373 delete [] fNames; fNames = 0;
2374 }
2375
2376 // if no errors, copy local parameters to formula objects
2377 if (!err) {
2378 if (fNdim <= 0) fNdim = 1;
2379 if (chaine.Length() > 4)
2380 {
2381 if ( GetNumber() != 400 &&
2382 GetNumber() != 410 &&
2383 GetNumber() != 110 )
2384 SetNumber(0);
2385 else if ( GetNumber() == 110 && chaine.Length() > 6 )
2386 SetNumber(0);
2387 else if ( GetNumber() == 410 && chaine.Length() > 8 )
2388 SetNumber(0);
2389 }
2390 // if formula is a gaussian, set parameter names
2391 if (GetNumber() == 100) {
2392 SetParName(0,"Constant");
2393 SetParName(1,"Mean");
2394 SetParName(2,"Sigma");
2395 }
2396 // if formula is a 2D gaussian, set parameter names
2397 if (GetNumber() == 110){
2398 SetParName(0,"Constant");
2399 SetParName(1,"MeanX");
2400 SetParName(2,"SigmaX");
2401 SetParName(3,"MeanY");
2402 SetParName(4,"SigmaY");
2403 }
2404 // if formula is an exponential, set parameter names
2405 if (GetNumber() == 200) {
2406 SetParName(0,"Constant");
2407 SetParName(1,"Slope");
2408 }
2409 // if formula is a polynom, set parameter names
2410 if (GetNumber() == 300+fNpar) {
2411 for (i=0;i<fNpar;i++) SetParName(i,Form("p%d",i));
2412 }
2413 // if formula is a landau, set parameter names
2414 if (GetNumber() == 400) {
2415 SetParName(0,"Constant");
2416 SetParName(1,"MPV");
2417 SetParName(2,"Sigma");
2418 }
2419 // if formula is a 2D landau, set parameter names
2420 if (GetNumber() == 410) {
2421 SetParName(0,"Constant");
2422 SetParName(1,"MPVX");
2423 SetParName(2,"SigmaX");
2424 SetParName(3,"MPVY");
2425 SetParName(4,"SigmaY");
2426 }
2427 }
2428
2429 // Here we shrink the arrays allocated like this:
2430 // fExpr = new TString[gMAXOP];
2431 // fConst = new Double_t[gMAXCONST];
2432 // fParams = new Double_t[gMAXPAR];
2433 // fNames = new TString[gMAXPAR];
2434 // fOper = new Int_t[gMAXOP];
2435 // fParams and fNames may be already 0, so we have to check.
2436 if (!err){
2437 ResizeArrayIfAllocated(fExpr, fNoper);
2438 ResizeArrayIfAllocated(fConst, fNconst);
2439 ResizeArrayIfAllocated(fParams, fNpar);
2440 ResizeArrayIfAllocated(fNames, fNpar);
2441 ResizeArrayIfAllocated(fOper, fNoper);
2442 }
2443
2444
2445 if (err) { fNdim = 0; return 1; }
2446 // Convert(5);
2447 //
2448 //MI change
2449 if (!IsA()->GetBaseClass("TTreeFormula")) {
2450 Optimize();
2451 }
2452 //
2453 return 0;
2454}
2455
2456////////////////////////////////////////////////////////////////////////////////
2457/// Copy this formula.
2458
2459void TFormula::Copy(TObject &obj) const
2460{
2461 Int_t i;
2462 ((TFormula&)obj).ClearFormula();
2463 TNamed::Copy(obj);
2464 ((TFormula&)obj).fNdim = fNdim;
2465 ((TFormula&)obj).fNpar = fNpar;
2466 ((TFormula&)obj).fNoper = fNoper;
2467 ((TFormula&)obj).fNconst = fNconst;
2468 ((TFormula&)obj).fNumber = fNumber;
2469 ((TFormula&)obj).fNval = fNval;
2470 ((TFormula&)obj).fExpr = 0;
2471 ((TFormula&)obj).fConst = 0;
2472 ((TFormula&)obj).fParams = 0;
2473 ((TFormula&)obj).fNames = 0;
2474 if (fExpr && fNoper) {
2475 ((TFormula&)obj).fExpr = new TString[fNoper];
2476 for (i=0;i<fNoper;i++) ((TFormula&)obj).fExpr[i] = fExpr[i];
2477 }
2478 if (fOper && fNoper) {
2479 ((TFormula&)obj).fOper = new Int_t[fNoper];
2480 for (i=0;i<fNoper;i++) ((TFormula&)obj).fOper[i] = fOper[i];
2481 }
2482 if (fConst && fNconst) {
2483 ((TFormula&)obj).fConst = new Double_t[fNconst];
2484 for (i=0;i<fNconst;i++) ((TFormula&)obj).fConst[i] = fConst[i];
2485 }
2486 if (fParams && fNpar) {
2487 ((TFormula&)obj).fParams = new Double_t[fNpar];
2488 for (i=0;i<fNpar;i++) ((TFormula&)obj).fParams[i] = fParams[i];
2489 }
2490 if (fNames && fNpar) {
2491 ((TFormula&)obj).fNames = new TString[fNpar];
2492 for (i=0;i<fNpar;i++) ((TFormula&)obj).fNames[i] = fNames[i];
2493 }
2494
2495 TIter next(&fFunctions);
2496 TObject *fobj;
2497 while ( (fobj = next()) ) {
2498 ((TFormula&)obj).fFunctions.Add( fobj->Clone() );
2499 }
2500 //
2501 // MI change
2502 //
2503 //
2504 if (fNoper) {
2505 if(fExprOptimized) {
2506 ((TFormula&)obj).fExprOptimized = new TString[fNoper];
2507 for (i=0;i<fNoper;i++) ((TFormula&)obj).fExprOptimized[i] = fExprOptimized[i];
2508 }
2509 if (fOperOptimized) {
2510 ((TFormula&)obj).fOperOptimized = new Int_t[fNoper];
2511 for (i=0;i<fNoper;i++) ((TFormula&)obj).fOperOptimized[i] = fOperOptimized[i];
2512 }
2513 if (fPredefined) {
2514 ((TFormula&)obj).fPredefined = new ROOT::v5::TFormulaPrimitive*[fNoper];
2515 for (i=0;i<fNoper;i++) {((TFormula&)obj).fPredefined[i] = fPredefined[i];}
2516 }
2517 if (fOperOffset) {
2518 ((TFormula&)obj).fOperOffset = new TOperOffset[fNoper];
2519 for (i=0;i<fNoper;i++) {((TFormula&)obj).fOperOffset[i] = fOperOffset[i];}
2520 }
2521 }
2522 ((TFormula&)obj).fNOperOptimized = fNOperOptimized;
2523 ((TFormula&)obj).fOptimal = fOptimal;
2524
2525}
2526
2527////////////////////////////////////////////////////////////////////////////////
2528/// Return address of string corresponding to special code.
2529///
2530/// This member function is inactive in the TFormula class.
2531/// It may be redefined in derived classes.
2532///
2533/// If you overload this member function, you also HAVE TO
2534/// never call the constructor:
2535///
2536/// ~~~ {.cpp}
2537/// TFormula::TFormula(const char *name,const char *expression)
2538/// ~~~
2539///
2540/// and write your own constructor
2541///
2542/// ~~~ {.cpp}
2543/// MyClass::MyClass(const char *name,const char *expression) : TFormula()
2544/// ~~~
2545///
2546/// which has to call the TFormula default constructor and whose implementation
2547/// should be similar to the implementation of the normal TFormula constructor
2548///
2549/// This is necessary because the normal TFormula constructor call indirectly
2550/// the virtual member functions Analyze, DefaultString, DefaultValue
2551/// and DefaultVariable.
2552
2553char *TFormula::DefinedString(Int_t)
2554{
2555 return 0;
2556}
2557
2558////////////////////////////////////////////////////////////////////////////////
2559/// Return value corresponding to special code.
2560///
2561/// This member function is inactive in the TFormula class.
2562/// It may be redefined in derived classes.
2563///
2564/// If you overload this member function, you also HAVE TO
2565/// never call the constructor:
2566///
2567/// ~~~ {.cpp}
2568/// TFormula::TFormula(const char *name,const char *expression)
2569/// ~~~
2570///
2571/// and write your own constructor
2572///
2573/// ~~~ {.cpp}
2574/// MyClass::MyClass(const char *name,const char *expression) : TFormula()
2575/// ~~~
2576///
2577/// which has to call the TFormula default constructor and whose implementation
2578/// should be similar to the implementation of the normal TFormula constructor
2579///
2580/// This is necessary because the normal TFormula constructor call indirectly
2581/// the virtual member functions Analyze, DefaultString, DefaultValue
2582/// and DefaultVariable.
2583
2584Double_t TFormula::DefinedValue(Int_t)
2585{
2586 return 0;
2587}
2588
2589////////////////////////////////////////////////////////////////////////////////
2590/// Check if expression is in the list of defined variables.
2591///
2592/// This member function can be overloaded in derived classes
2593///
2594/// If you overload this member function, you also HAVE TO
2595/// never call the constructor:
2596///
2597/// ~~~ {.cpp}
2598/// TFormula::TFormula(const char *name,const char *expression)
2599/// ~~~
2600///
2601/// and write your own constructor
2602///
2603/// ~~~ {.cpp}
2604/// MyClass::MyClass(const char *name,const char *expression) : TFormula()
2605/// ~~~
2606///
2607/// which has to call the TFormula default constructor and whose implementation
2608/// should be similar to the implementation of the normal TFormula constructor
2609///
2610/// This is necessary because the normal TFormula constructor call indirectly
2611/// the virtual member functions Analyze, DefaultString, DefaultValue
2612/// and DefaultVariable.
2613///
2614/// The expected returns values are
2615/// - -2 : the name has been recognized but won't be usable
2616/// - -1 : the name has not been recognized
2617/// - >=0 : the name has been recognized, return the action parameter.
2618
2619Int_t TFormula::DefinedVariable(TString &chaine,Int_t &action)
2620{
2621 action = kVariable;
2622 if (chaine == "x") {
2623 if (fNdim < 1) fNdim = 1;
2624 return 0;
2625 } else if (chaine == "y") {
2626 if (fNdim < 2) fNdim = 2;
2627 return 1;
2628 } else if (chaine == "z") {
2629 if (fNdim < 3) fNdim = 3;
2630 return 2;
2631 } else if (chaine == "t") {
2632 if (fNdim < 4) fNdim = 4;
2633 return 3;
2634 }
2635 // MI change
2636 // extended defined variable (MI)
2637 //
2638 if (chaine.Data()[0]=='x'){
2639 if (chaine.Data()[1]=='[' && chaine.Data()[3]==']'){
2640 const char ch0 = '0';
2641 Int_t dim = chaine.Data()[2]-ch0;
2642 if (dim<0) return -1;
2643 if (dim>9) return -1;
2644 if (fNdim<=dim) fNdim = dim+1;
2645 return dim;
2646 }
2647 if (chaine.Data()[1]=='[' && chaine.Data()[4]==']'){
2648 const char ch0 = '0';
2649 Int_t dim = (chaine.Data()[2]-ch0)*10+(chaine.Data()[3]-ch0);
2650 if (dim<0) return -1;
2651 if (dim>99) return -1;
2652 if (fNdim<=dim) fNdim = dim+1;
2653 return dim;
2654 }
2655 }
2656 return -1;
2657}
2658
2659////////////////////////////////////////////////////////////////////////////////
2660/// Evaluate this formula.
2661///
2662/// The current value of variables x,y,z,t is passed through x, y, z and t.
2663/// The parameters used will be the ones in the array params if params is given
2664/// otherwise parameters will be taken from the stored data members fParams
2665
2666Double_t TFormula::Eval(Double_t x, Double_t y, Double_t z, Double_t t) const
2667{
2668 Double_t xx[4];
2669 xx[0] = x;
2670 xx[1] = y;
2671 xx[2] = z;
2672 xx[3] = t;
2673 return ((TFormula*)this)->EvalPar(xx);
2674}
2675
2676////////////////////////////////////////////////////////////////////////////////
2677/// Evaluate this formula.
2678///
2679/// The current value of variables x,y,z,t is passed through the pointer x.
2680/// The parameters used will be the ones in the array params if params is given
2681/// otherwise parameters will be taken from the stored data members fParams
2682///
2683/// \image html TFormula_eval.png
2684
2685Double_t TFormula::EvalParOld(const Double_t *x, const Double_t *uparams)
2686{
2687 Int_t i,j;
2688 // coverity[uninit] the tab value of tab is guaranteed to be set properly by the control flow.
2689 Double_t tab[kMAXFOUND];
2690 const char *stringStack[gMAXSTRINGFOUND] = {0};
2691 Double_t param_calc[kMAXFOUND];
2692 char *string_calc[gMAXSTRINGFOUND] = {0};
2693 Int_t precalculated = 0;
2694 Int_t precalculated_str = 0;
2695 Double_t *params;
2696
2697 if (uparams) {
2698 params = const_cast<Double_t*>(uparams);
2699 } else {
2700 params = fParams;
2701 }
2702 UInt_t pos = 0;
2703 UInt_t strpos = 0;
2704
2705 for (i=0; i<fNoper; ++i) {
2706
2707 const int oper = fOper[i];
2708 const int opcode = oper >> kTFOperShift;
2709
2710 switch(opcode) {
2711
2712 case kParameter : { pos++; tab[pos-1] = params[ oper & kTFOperMask ]; continue; }
2713 case kConstant : { pos++; tab[pos-1] = fConst[ oper & kTFOperMask ]; continue; }
2714 case kVariable : { pos++; tab[pos-1] = x[ oper & kTFOperMask ]; continue; }
2715 case kStringConst: { strpos++; stringStack[strpos-1] = (char*)fExpr[i].Data(); pos++; tab[pos-1] = 0; continue; }
2716
2717 case kAdd : pos--; tab[pos-1] += tab[pos]; continue;
2718 case kSubstract : pos--; tab[pos-1] -= tab[pos]; continue;
2719 case kMultiply : pos--; tab[pos-1] *= tab[pos]; continue;
2720 case kDivide : pos--; if (tab[pos] == 0) tab[pos-1] = 0; // division by 0
2721 else tab[pos-1] /= tab[pos];
2722 continue;
2723 case kModulo : {pos--;
2724 Long64_t int1((Long64_t)tab[pos-1]);
2725 Long64_t int2((Long64_t)tab[pos]);
2726 tab[pos-1] = Double_t(int1%int2);
2727 continue;}
2728
2729 case kcos : tab[pos-1] = TMath::Cos(tab[pos-1]); continue;
2730 case ksin : tab[pos-1] = TMath::Sin(tab[pos-1]); continue;
2731 case ktan : if (TMath::Cos(tab[pos-1]) == 0) {tab[pos-1] = 0;} // { tangente indeterminee }
2732 else tab[pos-1] = TMath::Tan(tab[pos-1]);
2733 continue;
2734 case kacos : if (TMath::Abs(tab[pos-1]) > 1) {tab[pos-1] = 0;} // indetermination
2735 else tab[pos-1] = TMath::ACos(tab[pos-1]);
2736 continue;
2737 case kasin : if (TMath::Abs(tab[pos-1]) > 1) {tab[pos-1] = 0;} // indetermination
2738 else tab[pos-1] = TMath::ASin(tab[pos-1]);
2739 continue;
2740 case katan : tab[pos-1] = TMath::ATan(tab[pos-1]); continue;
2741 case kcosh : tab[pos-1] = TMath::CosH(tab[pos-1]); continue;
2742 case ksinh : tab[pos-1] = TMath::SinH(tab[pos-1]); continue;
2743 case ktanh : if (TMath::CosH(tab[pos-1]) == 0) {tab[pos-1] = 0;} // { tangente indeterminee }
2744 else tab[pos-1] = TMath::TanH(tab[pos-1]);
2745 continue;
2746 case kacosh: if (tab[pos-1] < 1) {tab[pos-1] = 0;} // indetermination
2747 else tab[pos-1] = TMath::ACosH(tab[pos-1]);
2748 continue;
2749 case kasinh: tab[pos-1] = TMath::ASinH(tab[pos-1]); continue;
2750 case katanh: if (TMath::Abs(tab[pos-1]) > 1) {tab[pos-1] = 0;} // indetermination
2751 else tab[pos-1] = TMath::ATanH(tab[pos-1]);
2752 continue;
2753 case katan2: pos--; tab[pos-1] = TMath::ATan2(tab[pos-1],tab[pos]); continue;
2754
2755 case kfmod : pos--; tab[pos-1] = fmod(tab[pos-1],tab[pos]); continue;
2756 case kpow : pos--; tab[pos-1] = TMath::Power(tab[pos-1],tab[pos]); continue;
2757 case ksq : tab[pos-1] = tab[pos-1]*tab[pos-1]; continue;
2758 case ksqrt : tab[pos-1] = TMath::Sqrt(TMath::Abs(tab[pos-1])); continue;
2759
2760 case kstrstr : strpos -= 2; pos-=2; pos++;
2761 if (strstr(stringStack[strpos],stringStack[strpos+1])) tab[pos-1]=1;
2762 else tab[pos-1]=0;
2763 continue;
2764
2765 case kmin : pos--; tab[pos-1] = TMath::Min(tab[pos-1],tab[pos]); continue;
2766 case kmax : pos--; tab[pos-1] = TMath::Max(tab[pos-1],tab[pos]); continue;
2767
2768 case klog : if (tab[pos-1] > 0) tab[pos-1] = TMath::Log(tab[pos-1]);
2769 else {tab[pos-1] = 0;} //{indetermination }
2770 continue;
2771 case kexp : { Double_t dexp = tab[pos-1];
2772 if (dexp < -700) {tab[pos-1] = 0; continue;}
2773 if (dexp > 700) {tab[pos-1] = TMath::Exp(700); continue;}
2774 tab[pos-1] = TMath::Exp(dexp); continue; }
2775 case klog10: if (tab[pos-1] > 0) tab[pos-1] = TMath::Log10(tab[pos-1]);
2776 else {tab[pos-1] = 0;} //{indetermination }
2777 continue;
2778
2779 case kpi : pos++; tab[pos-1] = TMath::ACos(-1); continue;
2780
2781 case kabs : tab[pos-1] = TMath::Abs(tab[pos-1]); continue;
2782 case ksign : if (tab[pos-1] < 0) tab[pos-1] = -1; else tab[pos-1] = 1; continue;
2783 case kint : tab[pos-1] = Double_t(Int_t(tab[pos-1])); continue;
2784
2785 case kSignInv: tab[pos-1] = -1 * tab[pos-1]; continue;
2786
2787 case krndm : pos++; tab[pos-1] = gRandom->Rndm(); continue;
2788
2789 case kAnd : pos--; if (tab[pos-1]!=0 && tab[pos]!=0) tab[pos-1]=1;
2790 else tab[pos-1]=0;
2791 continue;
2792 case kOr : pos--; if (tab[pos-1]!=0 || tab[pos]!=0) tab[pos-1]=1;
2793 else tab[pos-1]=0;
2794 continue;
2795 case kEqual: pos--; if (tab[pos-1] == tab[pos]) tab[pos-1]=1;
2796 else tab[pos-1]=0;
2797 continue;
2798 case kNotEqual : pos--; if (tab[pos-1] != tab[pos]) tab[pos-1]=1;
2799 else tab[pos-1]=0;
2800 continue;
2801 case kLess : pos--; if (tab[pos-1] < tab[pos]) tab[pos-1]=1;
2802 else tab[pos-1]=0;
2803 continue;
2804 case kGreater : pos--; if (tab[pos-1] > tab[pos]) tab[pos-1]=1;
2805 else tab[pos-1]=0;
2806 continue;
2807
2808 case kLessThan: pos--; if (tab[pos-1]<=tab[pos]) tab[pos-1]=1;
2809 else tab[pos-1]=0;
2810 continue;
2811 case kGreaterThan: pos--; if (tab[pos-1]>=tab[pos]) tab[pos-1]=1;
2812 else tab[pos-1]=0;
2813 continue;
2814 case kNot : if (tab[pos-1]!=0) tab[pos-1] = 0; else tab[pos-1] = 1;
2815 continue;
2816
2817 case kStringEqual : strpos -= 2; pos -=2 ; pos++;
2818 if (!strcmp(stringStack[strpos+1],stringStack[strpos])) tab[pos-1]=1;
2819 else tab[pos-1]=0;
2820 continue;
2821 case kStringNotEqual: strpos -= 2; pos -= 2; pos++;
2822 if (strcmp(stringStack[strpos+1],stringStack[strpos])) tab[pos-1]=1;
2823 else tab[pos-1]=0;
2824 continue;
2825
2826 case kBitAnd : pos--; tab[pos-1]= ((Int_t) tab[pos-1]) & ((Int_t) tab[pos]); continue;
2827 case kBitOr : pos--; tab[pos-1]= ((Int_t) tab[pos-1]) | ((Int_t) tab[pos]); continue;
2828 case kLeftShift : pos--; tab[pos-1]= ((Int_t) tab[pos-1]) <<((Int_t) tab[pos]); continue;
2829 case kRightShift: pos--; tab[pos-1]= ((Int_t) tab[pos-1]) >>((Int_t) tab[pos]); continue;
2830
2831 case kJump : i = (oper & kTFOperMask); continue;
2832 case kJumpIf : pos--; if (!tab[pos]) i = (oper & kTFOperMask); continue;
2833
2834 case kBoolOptimize: {
2835 // boolean operation optimizer
2836
2837 int param = (oper & kTFOperMask);
2838 Bool_t skip = kFALSE;
2839 int op = param % 10; // 1 is && , 2 is ||
2840
2841 if (op == 1 && (!tab[pos-1]) ) {
2842 // &&: skip the right part if the left part is already false
2843
2844 skip = kTRUE;
2845
2846 // Preserve the existing behavior (i.e. the result of a&&b is
2847 // either 0 or 1)
2848 tab[pos-1] = 0;
2849
2850 } else if (op == 2 && tab[pos-1] ) {
2851 // ||: skip the right part if the left part is already true
2852
2853 skip = kTRUE;
2854
2855 // Preserve the existing behavior (i.e. the result of a||b is
2856 // either 0 or 1)
2857 tab[pos-1] = 1;
2858
2859 }
2860
2861 if (skip) {
2862 int toskip = param / 10;
2863 i += toskip;
2864 }
2865 continue;
2866 }
2867
2868 }
2869
2870 switch(opcode) {
2871
2872 #define R__EXPO(var) \
2873 { \
2874 pos++; int param = (oper & kTFOperMask); \
2875 tab[pos-1] = TMath::Exp(params[param]+params[param+1]*x[var]); \
2876 continue; \
2877 }
2878 // case kexpo:
2879 case kxexpo: R__EXPO(0);
2880 case kyexpo: R__EXPO(1);
2881 case kzexpo: R__EXPO(2);
2882 case kxyexpo:{ pos++; int param = (oper & kTFOperMask);
2883 tab[pos-1] = TMath::Exp(params[param]+params[param+1]*x[0]+params[param+2]*x[1]);
2884 continue; }
2885
2886 #define R__GAUS(var) \
2887 { \
2888 pos++; int param = (oper & kTFOperMask); \
2889 tab[pos-1] = params[param]*TMath::Gaus(x[var],params[param+1],params[param+2],IsNormalized()); \
2890 continue; \
2891 }
2892
2893 // case kgaus:
2894 case kxgaus: R__GAUS(0);
2895 case kygaus: R__GAUS(1);
2896 case kzgaus: R__GAUS(2);
2897 case kxygaus: {pos++; int param = (oper & kTFOperMask);
2898 Double_t intermede1;
2899 if (params[param+2] == 0) {
2900 intermede1=1e10;
2901 } else {
2902 intermede1=Double_t((x[0]-params[param+1])/params[param+2]);
2903 }
2904 Double_t intermede2;
2905 if (params[param+4] == 0) {
2906 intermede2=1e10;
2907 } else {
2908 intermede2=Double_t((x[1]-params[param+3])/params[param+4]);
2909 }
2910 tab[pos-1] = params[param]*TMath::Exp(-0.5*(intermede1*intermede1+intermede2*intermede2));
2911 continue; }
2912
2913 #define R__LANDAU(var) \
2914 { \
2915 pos++; const int param = (oper & kTFOperMask); \
2916 tab[pos-1] = params[param]*TMath::Landau(x[var],params[param+1],params[param+2],IsNormalized()); \
2917 continue; \
2918 }
2919 // case klandau:
2920 case kxlandau: R__LANDAU(0);
2921 case kylandau: R__LANDAU(1);
2922 case kzlandau: R__LANDAU(2);
2923 case kxylandau: { pos++; int param = oper&0x7fffff /* ActionParams[i] */ ;
2924 Double_t intermede1=TMath::Landau(x[0], params[param+1], params[param+2],IsNormalized());
2925 Double_t intermede2=TMath::Landau(x[1], params[param+3], params[param+4],IsNormalized());
2926 tab[pos-1] = params[param]*intermede1*intermede2;
2927 continue;
2928 }
2929
2930 #define R__POLY(var) \
2931 { \
2932 pos++; int param = (oper & kTFOperMask); \
2933 tab[pos-1] = 0; Double_t intermede = 1; \
2934 Int_t inter = param/100; /* arrondit */ \
2935 Int_t int1= param-inter*100-1; /* aucune simplification ! (sic) */ \
2936 for (j=0 ;j<inter+1;j++) { \
2937 tab[pos-1] += intermede*params[j+int1]; \
2938 intermede *= x[var]; \
2939 } \
2940 continue; \
2941 }
2942 // case kpol:
2943 case kxpol: R__POLY(0);
2944 case kypol: R__POLY(1);
2945 case kzpol: R__POLY(2);
2946
2947 case kDefinedVariable : {
2948 if (!precalculated) {
2949 precalculated = 1;
2950 for(j=0;j<fNval;j++) param_calc[j]=DefinedValue(j);
2951 }
2952 pos++; tab[pos-1] = param_calc[(oper & kTFOperMask)];
2953 continue;
2954 }
2955
2956 case kDefinedString : {
2957 int param = (oper & kTFOperMask);
2958 if (!precalculated_str) {
2959 precalculated_str=1;
2960 for (j=0;j<fNstring;j++) string_calc[j]=DefinedString(j);
2961 }
2962 strpos++; stringStack[strpos-1] = string_calc[param];
2963 pos++; tab[pos-1] = 0;
2964 continue;
2965 }
2966
2967 case kFunctionCall: {
2968 // an external function call
2969
2970 int param = (oper & kTFOperMask);
2971 int fno = param / 1000;
2972 int nargs = param % 1000;
2973
2974 // Retrieve the function
2975 TMethodCall *method = (TMethodCall*)fFunctions.At(fno);
2976
2977 // Set the arguments
2978 method->ResetParam();
2979 if (nargs) {
2980 UInt_t argloc = pos-nargs;
2981 for(j=0;j<nargs;j++,argloc++,pos--) {
2982 method->SetParam(tab[argloc]);
2983 }
2984 }
2985 pos++;
2986 Double_t ret;
2987 method->Execute(ret);
2988 tab[pos-1] = ret; // check for the correct conversion!
2989
2990 continue;
2991 };
2992 }
2993 if (!TestBit(kOptimizationError)) {
2994 SetBit(kOptimizationError);
2995 Warning("EvalParOld","Found an unsupported opcode (%d)",oper >> kTFOperShift);
2996 }
2997 }
2998 Double_t result0 = tab[0];
2999 return result0;
3000
3001}
3002
3003////////////////////////////////////////////////////////////////////////////////
3004/// Reconstruct the formula expression from the internal TFormula member variables
3005///
3006/// This function uses the internal member variables of TFormula to
3007/// construct the mathematical expression associated with the TFormula
3008/// instance. This function can be used to get an expanded version of the
3009/// expression originally assigned to the TFormula instance, i.e. that
3010/// the string returned by GetExpFormula() doesn't depend on other
3011/// TFormula object names.
3012///
3013/// if option contains "p" the returned string will contain the formula
3014/// expression with symbolic parameters, eg [0] replaced by the actual value
3015/// of the parameter. Example:
3016/// if expression in formula is: "[0]*(x>-[1])+[2]*exp(-[3]*x)"
3017/// and parameters are 3.25,-4.01,4.44,-0.04, GetExpFormula("p") will return:
3018/// "(3.25*(x>+4.01))+(4.44*exp(+0.04*x))"
3019
3020TString TFormula::GetExpFormula(Option_t *option) const
3021{
3022 if (fNoper>0) {
3023 TString* tab=new TString[fNoper];
3024 Bool_t* ismulti=new Bool_t[fNoper];
3025 Int_t spos=0;
3026
3027 ismulti[0]=kFALSE;
3028 Int_t optype;
3029 Int_t j;
3030 Int_t ternaryend = -1;
3031 for(Int_t i=0;i<fNoper;i++){
3032 optype = GetAction(i);
3033
3034 if (ternaryend==i) {
3035 // The ? and : have been added to tab[spos-2]
3036 if(ismulti[spos-1]){
3037 tab[spos-2]=tab[spos-2]+"("+tab[spos-1]+")";
3038 } else {
3039 tab[spos-2]=tab[spos-2]+tab[spos-1];
3040 }
3041 spos--;
3042 // Do not call continue since we need to
3043 // do the rest of the loop.
3044 }
3045
3046 // Boolean optimization breakpoint
3047 if (optype==kBoolOptimize) { // -3) {
3048 continue;
3049 }
3050
3051 //Sign inversion
3052 if (optype==kSignInv) { // -1) {
3053 tab[spos-1]="-("+tab[spos-1]+")";
3054 // i++;
3055 continue;
3056 }
3057
3058 //Simple name (parameter,pol0,landau, etc)
3059 if (kexpo<=optype && optype<=kzpol) { // >=0) {
3060 tab[spos]=fExpr[i];
3061 ismulti[spos]=kFALSE;
3062 spos++;
3063 continue;
3064 }
3065
3066 //constants, variables x,y,z,t, pi
3067 if ((optype<=151 && optype>=140 && optype!=145) || (optype == 40)) {
3068 tab[spos]=fExpr[i];
3069 ismulti[spos]=kFALSE;
3070 spos++;
3071 continue;
3072 }
3073
3074 //Basic operators (+,-,*,/,==,^,etc)
3075 if(((optype>0 && optype<6) || optype==20 ||
3076 (((optype>59 && optype<69) || (optype >75 && optype<82)) && spos>=2))) {
3077 // if(optype==-20 && spos>=2){
3078 if(ismulti[spos-2]){
3079 tab[spos-2]="("+tab[spos-2]+")";
3080 }
3081 if(ismulti[spos-1]){
3082 tab[spos-2]+=fExpr[i]+("("+tab[spos-1]+")");
3083 }else{
3084 tab[spos-2]+=fExpr[i]+tab[spos-1];
3085 }
3086 ismulti[spos-2]=kTRUE;
3087 spos--;
3088 continue;
3089 }
3090 //Ternary condition
3091 if (optype==kJumpIf) {
3092 if(ismulti[spos-1]){
3093 tab[spos-1]="("+tab[spos-1]+")?";
3094 } else {
3095 tab[spos-1]=tab[spos-1]+"?";
3096 }
3097 continue;
3098 }
3099 if (optype==kJump) {
3100 if(ismulti[spos-1]){
3101 tab[spos-2]=tab[spos-2]+"("+tab[spos-1]+"):";
3102 } else {
3103 tab[spos-2]=tab[spos-2]+tab[spos-1]+":";
3104 }
3105 ternaryend = GetActionParam(i) + 1;
3106 spos--;
3107 continue;
3108 }
3109
3110 //Functions
3111 int offset = 0;
3112 TString funcname = fExpr[i];
3113 if((optype>9 && optype<16) ||
3114 (optype>20 && optype<23) ||
3115 (optype>29 && optype<34) ||
3116 (optype>40 && optype<44) ||
3117 (optype>69 && optype<76) ||
3118 (optype==145)) {
3119 //Functions with the format func(x)
3120 offset = -1;
3121 }
3122
3123 if((optype>15 && optype<20) ||
3124 (optype>22 && optype<26)) {
3125 //Functions with the format func(x,y)
3126 offset = -2;
3127 }
3128 if(optype==145) {
3129 int param = (fOper[i] & kTFOperMask);
3130 //int fno = param / 1000;
3131 int nargs = param % 1000;
3132 offset = -nargs;
3133 // The function name contains return type and parameters types we need
3134 // to trim them.
3135 int depth;
3136 for(j=0, depth=0;j<funcname.Length();++j) {
3137 switch (funcname[j]) {
3138 case '<':
3139 ++depth; break;
3140 case '>':
3141 --depth; break;
3142 case ' ':
3143 if (depth==0) {
3144 funcname.Remove(0,j+1);
3145 j = funcname.Length();
3146 break;
3147 }
3148 }
3149 }
3150 Ssiz_t ind = funcname.First('(');
3151 funcname.Remove(ind);
3152 }
3153 if (offset > 0) {
3154 Error("GetExpFormula","Internal error, number of argument found is %d",-offset);
3155 } else if (offset == 0) {
3156 tab[spos]=funcname+"()";
3157 ismulti[spos]=kFALSE;
3158 spos += 1;
3159 continue;
3160 } else if (offset<=0 && (spos+offset>=0)) {
3161 tab[spos+offset]=funcname+("("+tab[spos+offset]);
3162 for (j=offset+1; j<0; j++){
3163 tab[spos+offset]+=","+tab[spos+j];
3164 }
3165 tab[spos+offset]+=")";
3166 ismulti[spos+offset]=kFALSE;
3167 spos += offset+1;
3168 continue;
3169 }
3170 }
3171 if (ternaryend==fNoper) {
3172 // The ? and : have been added to tab[spos-2]
3173 if(ismulti[spos-1]){
3174 tab[spos-2]=tab[spos-2]+"("+tab[spos-1]+")";
3175 } else {
3176 tab[spos-2]=tab[spos-2]+tab[spos-1];
3177 }
3178 spos--;
3179 }
3180
3181 TString ret = "";
3182 if (spos > 0) ret = tab[spos-1];
3183 delete[] tab;
3184 delete[] ismulti;
3185
3186 //if option "p" is specified, return the real values of parameters instead of [0]
3187 TString opt = option;
3188 opt.ToLower();
3189 if (opt.Contains("p")) {
3190 char pb[13];
3191 char pbv[100];
3192 for (j=0;j<fNpar;j++) {
3193 snprintf(pb,sizeof(pb),"[%d]",j);
3194 snprintf(pbv,100,"%g",fParams[j]);
3195 ret.ReplaceAll(pb,pbv);
3196 }
3197 ret.ReplaceAll("--","+");
3198 ret.ReplaceAll("+-","-");
3199 }
3200 return ret;
3201 } else{
3202 TString ret="";
3203 return ret;
3204 }
3205}
3206
3207////////////////////////////////////////////////////////////////////////////////
3208/// Return linear part.
3209
3210const TObject* TFormula::GetLinearPart(Int_t i)
3211{
3212 if (!fLinearParts.IsEmpty())
3213 return fLinearParts.UncheckedAt(i);
3214 return 0;
3215}
3216
3217////////////////////////////////////////////////////////////////////////////////
3218/// Return value of parameter number ipar.
3219
3220Double_t TFormula::GetParameter(Int_t ipar) const
3221{
3222 if (ipar <0 || ipar >= fNpar) return 0;
3223 return fParams[ipar];
3224}
3225
3226////////////////////////////////////////////////////////////////////////////////
3227/// Return value of parameter named parName.
3228
3229Double_t TFormula::GetParameter(const char *parName) const
3230{
3231 const Double_t kNaN = 1e-300;
3232 Int_t index = GetParNumber(parName);
3233 if (index==-1) {
3234 Error("TFormula", "Parameter %s not found", parName);
3235 return kNaN;
3236 }
3237 return GetParameter(index);
3238}
3239
3240////////////////////////////////////////////////////////////////////////////////
3241/// Return name of one parameter.
3242
3243const char *TFormula::GetParName(Int_t ipar) const
3244{
3245 if (ipar <0 || ipar >= fNpar) return "";
3246 if (fNames[ipar].Length() > 0) return (const char*)fNames[ipar];
3247 return Form("p%d",ipar);
3248}
3249
3250////////////////////////////////////////////////////////////////////////////////
3251/// Return parameter number by name.
3252
3253Int_t TFormula::GetParNumber(const char *parName) const
3254{
3255 if (!parName)
3256 return -1;
3257
3258 for (Int_t i=0; i<fNpar; i++) {
3259 if (!strcmp(GetParName(i),parName)) return i;
3260 }
3261 return -1;
3262}
3263
3264////////////////////////////////////////////////////////////////////////////////
3265/// Return true if the expression at the index 'oper' has to be treated as a string
3266
3267Bool_t TFormula::IsString(Int_t oper) const
3268{
3269 return GetAction(oper) == kStringConst;
3270}
3271
3272////////////////////////////////////////////////////////////////////////////////
3273/// Dump this formula with its attributes.
3274
3275void TFormula::Print(Option_t *) const
3276{
3277 Int_t i;
3278 Printf(" %20s : %s Ndim= %d, Npar= %d, Noper= %d",GetName(),GetTitle(), fNdim,fNpar,fNoper);
3279 for (i=0;i<fNoper;i++) {
3280 Printf(" fExpr[%d] = %s action = %d action param = %d ",
3281 i,(const char*)fExpr[i],GetAction(i),GetActionParam(i));
3282 }
3283 //MI change
3284 //
3285 if (fNOperOptimized>0){
3286 Printf("Optimized expression");
3287 for (i=0;i<fNOperOptimized;i++) {
3288 Printf(" fExpr[%d] = %s\t\t action = %d action param = %d ",
3289 i,(const char*)fExprOptimized[i],GetActionOptimized(i),GetActionParamOptimized(i));
3290 }
3291 }
3292
3293 if (!fNames) return;
3294 if (!fParams) return;
3295 for (i=0;i<fNpar;i++) {
3296 Printf(" Par%3d %20s = %g",i,GetParName(i),fParams[i]);
3297 }
3298}
3299
3300////////////////////////////////////////////////////////////////////////////////
3301/// If the formula is for linear fitting, change the title to
3302/// normal and fill the LinearParts array
3303
3304void TFormula::ProcessLinear(TString &formula)
3305{
3306 TString formula2(formula);
3307 char repl[20];
3308 char *pch;
3309 Int_t nf, offset, replsize;
3310 //replace "++" with "+[i]*"
3311 pch= (char*)strstr(formula.Data(), "++");
3312 if (pch)
3313 formula.Insert(0, "[0]*(");
3314 pch= (char*)strstr(formula.Data(), "++");
3315 if (pch){
3316 //if there are "++", replaces them with +[i]*
3317 nf = 1;
3318 while (pch){
3319 snprintf(repl,20, ")+[%d]*(", nf);
3320 offset = pch-formula.Data();
3321 if (nf<10) replsize = 7;
3322 else if (nf<100) replsize = 8;
3323 else replsize = 9;
3324 formula.Replace(pch-formula.Data(), 2, repl, replsize);
3325 pch = (char*)strstr(formula.Data()+offset, "++");
3326 nf++;
3327 }
3328 formula.Append(')', 1);
3329 } else {
3330 //if there are no ++, create a new string with ++ instead of +[i]*
3331 formula2=formula2(4, formula2.Length()-4);
3332 pch= (char*)strchr(formula2.Data(), '[');
3333 snprintf(repl,20, "++");
3334 nf = 1;
3335 while (pch){
3336 offset = pch-formula2.Data()-1;
3337 if (nf<10) replsize = 5;
3338 else replsize = 6;
3339 formula2.Replace(pch-formula2.Data()-1, replsize, repl, 2);
3340 pch = (char*)strchr(formula2.Data()+offset, '[');
3341 nf++;
3342 }
3343 }
3344
3345 fLinearParts.Expand(nf);
3346 //break up the formula and fill the array of linear parts
3347 TString replaceformula;
3348 formula2 = formula2.ReplaceAll("++", 2, "|", 1);
3349 TObjArray *oa = formula2.Tokenize("|");
3350 TString replaceformula_name;
3351 for (Int_t i=0; i<nf; i++) {
3352 replaceformula = ((TObjString *)oa->UncheckedAt(i))->GetString();
3353 replaceformula_name = "f_linear_";
3354 replaceformula_name.Append(replaceformula);
3355 TFormula *f = new TFormula(replaceformula_name.Data(), replaceformula.Data());
3356 if (!f) {
3357 Error("TFormula", "f_linear not allocated");
3358 return;
3359 }
3360 {
3361 R__LOCKGUARD(gROOTMutex);
3362 gROOT->GetListOfFunctions()->Remove(f);
3363 }
3364 f->SetBit(kNotGlobal, 1);
3365 fLinearParts.Add(f);
3366 }
3367 oa->Delete();
3368}
3369
3370////////////////////////////////////////////////////////////////////////////////
3371/// Initialize parameter number ipar.
3372
3373void TFormula::SetParameter(const char *name, Double_t value)
3374{
3375 Int_t ipar = GetParNumber(name);
3376 if (ipar <0 || ipar >= fNpar) return;
3377 fParams[ipar] = value;
3378 Update();
3379}
3380
3381////////////////////////////////////////////////////////////////////////////////
3382/// Initialize parameter number ipar.
3383
3384void TFormula::SetParameter(Int_t ipar, Double_t value)
3385{
3386 if (ipar <0 || ipar >= fNpar) return;
3387 fParams[ipar] = value;
3388 Update();
3389}
3390
3391////////////////////////////////////////////////////////////////////////////////
3392/// Initialize array of all parameters.
3393/// See also the next function with the same name.
3394
3395void TFormula::SetParameters(const Double_t *params)
3396{
3397 for (Int_t i=0; i<fNpar;i++) {
3398 fParams[i] = params[i];
3399 }
3400 Update();
3401}
3402
3403////////////////////////////////////////////////////////////////////////////////
3404/// Initialize up to 11 parameters
3405/// All arguments except THE FIRST TWO are optional
3406/// In case of a function with only one parameter, call this function with p1=0.
3407/// Minimum two arguments are required to differentiate this function
3408/// from the SetParameters(cont Double_t *params)
3409
3410void TFormula::SetParameters(Double_t p0,Double_t p1,Double_t p2,Double_t p3,Double_t p4
3411 ,Double_t p5,Double_t p6,Double_t p7,Double_t p8,Double_t p9,Double_t p10)
3412{
3413 if (fNpar > 0) fParams[0] = p0;
3414 if (fNpar > 1) fParams[1] = p1;
3415 if (fNpar > 2) fParams[2] = p2;
3416 if (fNpar > 3) fParams[3] = p3;
3417 if (fNpar > 4) fParams[4] = p4;
3418 if (fNpar > 5) fParams[5] = p5;
3419 if (fNpar > 6) fParams[6] = p6;
3420 if (fNpar > 7) fParams[7] = p7;
3421 if (fNpar > 8) fParams[8] = p8;
3422 if (fNpar > 9) fParams[9] = p9;
3423 if (fNpar >10) fParams[10]= p10;
3424 Update();
3425}
3426
3427////////////////////////////////////////////////////////////////////////////////
3428/// Set name of parameter number ipar
3429
3430void TFormula::SetParName(Int_t ipar, const char *name)
3431{
3432 if (ipar <0 || ipar >= fNpar) return;
3433 fNames[ipar] = name;
3434}
3435
3436////////////////////////////////////////////////////////////////////////////////
3437/// Set up to 11 parameter names.
3438
3439void TFormula::SetParNames(const char*name0,const char*name1,const char*name2,const char*name3,const char*name4,
3440 const char*name5,const char*name6,const char*name7,const char*name8,const char*name9,const char*name10)
3441{
3442 if (fNpar > 0) fNames[0] = name0;
3443 if (fNpar > 1) fNames[1] = name1;
3444 if (fNpar > 2) fNames[2] = name2;
3445 if (fNpar > 3) fNames[3] = name3;
3446 if (fNpar > 4) fNames[4] = name4;
3447 if (fNpar > 5) fNames[5] = name5;
3448 if (fNpar > 6) fNames[6] = name6;
3449 if (fNpar > 7) fNames[7] = name7;
3450 if (fNpar > 8) fNames[8] = name8;
3451 if (fNpar > 9) fNames[9] = name9;
3452 if (fNpar >10) fNames[10]= name10;
3453}
3454
3455////////////////////////////////////////////////////////////////////////////////
3456/// Stream a class object.
3457
3458void TFormula::Streamer(TBuffer &b, const TClass *onfile_class)
3459{
3460 if (b.IsReading()) {
3461 UInt_t R__s, R__c;
3462 Version_t v = b.ReadVersion(&R__s, &R__c);
3463 if (v==6) {
3464 Error("Streamer","version 6 is not supported");
3465 return;
3466 }
3467 Streamer(b, v, R__s, R__c, onfile_class);
3468
3469 } else {
3470 b.WriteClassBuffer(TFormula::Class(),this);
3471 }
3472}
3473
3474////////////////////////////////////////////////////////////////////////////////
3475/// Stream a class object.
3476
3477void TFormula::Streamer(TBuffer &b)
3478{
3479 if (b.IsReading()) {
3480 UInt_t R__s, R__c;
3481 Version_t v = b.ReadVersion(&R__s, &R__c);
3482 if (v==6) {
3483 Error("Streamer","version 6 is not supported");
3484 return;
3485 }
3486 Streamer(b, v, R__s, R__c, nullptr);
3487
3488 } else {
3489 b.WriteClassBuffer(TFormula::Class(),this);
3490 }
3491}
3492
3493////////////////////////////////////////////////////////////////////////////////
3494/// specialized streamer function being able to read old TF1 versions as TF1Old in memory
3495
3496void TFormula::Streamer(TBuffer &b, Int_t v, UInt_t R__s, UInt_t R__c, const TClass *onfile_class)
3497{
3498
3499 //printf("Reading TFormula - version %d \n",v);
3500 if (v > 3 ) {
3501 b.ReadClassBuffer(TFormula::Class(), this, v, R__s, R__c, onfile_class);
3502 if (!TestBit(kNotGlobal)) {
3503 R__LOCKGUARD(gROOTMutex);
3504 gROOT->GetListOfFunctions()->Add(this);
3505 }
3506
3507 // We need to reinstate (if possible) the TMethodCall.
3508 if (fFunctions.GetLast()>=0) {
3509 // Compiles will reset the parameter values so we need
3510 // to temporarily keep them
3511 Double_t *param = fParams;
3512 TString *names = fNames;
3513 Int_t npar = fNpar;
3514 fParams = 0;
3515 fNames = 0;
3516 if (Compile()) {
3517 Error("Streamer","error compiling formula");
3518 return;
3519 }
3520 for (Int_t i = 0; i<npar && i<fNpar; ++i) fParams[i] = param[i];
3521 delete [] param;
3522 delete [] fNames;
3523 fNames = names;
3524 } else if (v<6) {
3525 Convert(v);
3526 }
3527 Optimize();
3528 return;
3529 }
3530 // version smaller or equal to 3
3531 // process old versions before automatic schema evolution
3532 TNamed::Streamer(b);
3533 b >> fNdim;
3534 b >> fNumber;
3535 if (v > 1) b >> fNval;
3536 if (v > 2) b >> fNstring;
3537 fNpar = b.ReadArray(fParams);
3538 fOper = new Int_t[gMAXOP];
3539 fNoper = b.ReadArray(fOper);
3540 fNconst = b.ReadArray(fConst);
3541 if (fNoper) {
3542 fExpr = new TString[fNoper];
3543 }
3544 if (fNpar) {
3545 fNames = new TString[fNpar];
3546 }
3547 Int_t i;
3548 for (i=0;i<fNoper;i++) fExpr[i].Streamer(b);
3549 for (i=0;i<fNpar;i++) fNames[i].Streamer(b);
3550 {
3551 R__LOCKGUARD(gROOTMutex);
3552 if (gROOT->GetListOfFunctions()->FindObject(GetName())) return;
3553 gROOT->GetListOfFunctions()->Add(this);
3554 }
3555 b.CheckByteCount(R__s, R__c, TFormula::IsA());
3556
3557 Convert(v);
3558 // end of old versions
3559
3560}
3561
3562void TFormula::Convert(UInt_t /* fromVersion */)
3563{
3564 // Convert the fOper of a TFormula version fromVersion to the current in memory version
3565
3566 enum {
3567 kOldexpo = 1000,
3568 kOldgaus = 2000,
3569 kOldlandau = 4000,
3570 kOldxylandau = 4500,
3571 kOldConstants = 50000,
3572 kOldStrings = 80000,
3573 kOldVariable = 100000,
3574 kOldTreeString = 105000,
3575 kOldFormulaVar = 110000,
3576 kOldBoolOptimize = 120000,
3577 kOldFunctionCall = 200000
3578 };
3579 int i,j;
3580
3581 for (i=0,j=0; i<fNoper; ++i,++j) {
3582 Int_t action = fOper[i];
3583 Int_t newActionCode = 0;
3584 Int_t newActionParam = 0;
3585
3586 if ( action == 0) {
3587 // Sign Inversion
3588
3589 newActionCode = kSignInv;
3590
3591 Float_t aresult = 99.99;
3592 sscanf((const char*)fExpr[i],"%g",&aresult);
3593 R__ASSERT((aresult+1)<0.001);
3594
3595 ++i; // skip the implied multiplication.
3596
3597 // For consistency and for Optimize to work correctly
3598 // we need to remove the "-1" string in fExpr
3599 for (int z=i; z<fNoper; ++z) {
3600 fExpr[z-1] = fExpr[z];
3601 }
3602
3603 } else if ( action < 100 ) {
3604 // basic operators and mathematical library
3605
3606 newActionCode = action;
3607
3608 } else if (action >= kOldFunctionCall) {
3609 // Function call
3610
3611 newActionCode = kFunctionCall;
3612 newActionParam = action-kOldFunctionCall;
3613
3614 } else if (action >= kOldBoolOptimize) {
3615 // boolean operation optimizer
3616
3617 newActionCode = kBoolOptimize;
3618 newActionParam = action-kOldBoolOptimize;
3619
3620 } else if (action >= kOldFormulaVar) {
3621 // a variable
3622
3623 newActionCode = kVariable;
3624 newActionParam = action-kOldFormulaVar;
3625
3626 } else if (action >= kOldTreeString) {
3627 // a tree string
3628
3629 newActionCode = kDefinedString;
3630 newActionParam = action-kOldTreeString;
3631
3632 } else if (action >= kOldVariable) {
3633 // a tree variable
3634
3635 newActionCode = kDefinedVariable;
3636 newActionParam = action-kOldVariable;
3637
3638 } else if (action == kOldStrings) {
3639 // String
3640
3641 newActionCode = kStringConst;
3642
3643 } else if (action >= kOldConstants) {
3644 // numerical value
3645
3646 newActionCode = kConstant;
3647 newActionParam = action-kOldConstants;
3648
3649 } else if (action > 10000 && action < kOldConstants) {
3650 // Polynomial
3651
3652 int var = action/10000; //arrondit
3653 newActionCode = kpol + (var-1);
3654 newActionParam = action - var*10000;
3655
3656 } else if (action >= 4600) {
3657
3658 Error("Convert","Unsupported value %d",action);
3659
3660 } else if (action > kOldxylandau) {
3661 // xylandau
3662
3663 newActionCode = kxylandau;
3664 newActionParam = action - (kOldxylandau+1);
3665
3666 } else if (action > kOldlandau) {
3667 // landau, xlandau, ylandau or zlandau
3668
3669 newActionCode = klandau;
3670 int var = action/100-40;
3671 if (var) newActionCode += var;
3672 newActionParam = action - var*100 - (kOldlandau+1);
3673
3674 } else if (action > 2500 && action < 2600) {
3675 // xygaus
3676
3677 newActionCode = kxygaus;
3678 newActionParam = action-2501;
3679
3680 } else if (action > 2000 && action < 2500) {
3681 // gaus, xgaus, ygaus or zgaus
3682
3683 newActionCode = kgaus;
3684 int var = action/100-20;
3685 if (var) newActionCode += var;
3686 newActionParam = action - var*100 - (kOldgaus+1);
3687
3688 } else if (action > 1500 && action < 1600) {
3689 // xyexpo
3690
3691 newActionCode = kxyexpo;
3692 newActionParam = action-1501;
3693
3694 } else if (action > 1000 && action < 1500) {
3695 // expo or xexpo or yexpo or zexpo
3696
3697 newActionCode = kexpo;
3698 int var = action/100-10;
3699 if (var) newActionCode += var;
3700 newActionParam = action - var*100 - (kOldexpo+1);
3701
3702 } if (action > 100 && action < 200) {
3703 // Parameter substitution
3704
3705 newActionCode = kParameter;
3706 newActionParam = action - 101;
3707 }
3708
3709 SetAction( j, newActionCode, newActionParam );
3710
3711 }
3712 if (i!=j) {
3713 fNoper -= (i-j);
3714 }
3715
3716}
3717
3718////////////////////////////////////////////////////////////////////////////////
3719/// TOper offset - helper class for TFormula*
3720/// specify type of operand
3721/// fTypeX = kVariable
3722/// = kParameter
3723/// = kConstant
3724/// fOffestX = offset in corresponding array
3725
3726TOperOffset::TOperOffset()
3727{
3728 fType0=0;
3729 fType1=0;
3730 fType2=0;
3731 fType3=0;
3732 fOffset0=0;
3733 fOffset1=0;
3734 fOffset2=0;
3735 fOffset3=0;
3736 fOldAction=0;
3737 fToJump=0;
3738}
3739
3740////////////////////////////////////////////////////////////////////////////////
3741/// MakePrimitive
3742/// find TFormulaPrimitive replacement for some operands
3743
3744void TFormula::MakePrimitive(const char *expr, Int_t pos)
3745{
3746 TString cbase(expr);
3747 cbase.ReplaceAll("Double_t ","");
3748 int paran = cbase.First("(");
3749 // int nargs = 0;
3750 if (paran>0) {
3751 //nargs = 1;
3752 cbase[paran]=0;
3753 }
3754
3755 if (cbase=="<") cbase="XlY";
3756 if (cbase=="<=") cbase="XleY";
3757 if (cbase==">") cbase="XgY";
3758 if (cbase==">=") cbase="XgeY";
3759 if (cbase=="==" && GetActionOptimized(pos)!=kStringEqual) cbase="XeY";
3760 if (cbase=="!=" && GetActionOptimized(pos)!=kStringNotEqual) cbase="XneY";
3761
3762 ROOT::v5::TFormulaPrimitive *prim = ROOT::v5::TFormulaPrimitive::FindFormula(cbase ,paran>0 ? cbase.Data() + paran + 1 : (const char*)0);
3763 if (prim) {
3764 fPredefined[pos] = prim;
3765 if (prim->fType==10) {
3766 SetActionOptimized(pos, kFD1);
3767 }
3768 if (prim->fType==110) {
3769 SetActionOptimized(pos, kFD2);
3770 }
3771 if (prim->fType==1110) {
3772 SetActionOptimized(pos, kFD3);
3773 }
3774 if (prim->fType==-1) {
3775 SetActionOptimized(pos, kFDM);
3776 }
3777 if (prim->fType==0){
3778 SetActionOptimized(pos,kConstant,fNconst);
3779 fConst[fNconst] = prim->Eval(0);
3780 fNconst++;
3781 }
3782 return;
3783 }
3784}
3785
3786////////////////////////////////////////////////////////////////////////////////
3787/// MI include
3788///
3789/// Optimize formula
3790/// - Minimize the number of operands
3791/// 1. several operands are glued together
3792/// 2. some primitive functions glued together - exemp. (x+y) => PlusXY(x,y)
3793/// 3. maximize number of standard calls minimizing number of jumps in Eval cases
3794/// 4. variables, parameters and constants are mapped - using fOperOfssets0
3795/// Eval procedure use direct acces to data (only one corresponding case statement in eval procedure)
3796/// ~~~ {.cpp}
3797/// pdata[operand={Var,Par,Const}][offset]
3798/// pdata[fOperOffsets0[i]][fOperOffset1[i+1]]
3799/// ~~~
3800/// - The fastest evaluation function is chosen at the end
3801/// 1. fOptimal := pointer to the fastest function for given evaluation string
3802/// ~~~ {.cpp}
3803/// switch(GetActionOptimized(0)){
3804/// case kData : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive0; break;}
3805/// case kUnary : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive1; break;}
3806/// case kBinary : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive2; break;}
3807/// case kThree : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive3; break;}
3808/// case kFDM : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive4; break;}
3809/// }
3810/// ~~~
3811/// 2. ex.
3812/// - fOptimal = ::EvalPrimitive0 - if it return only variable, constant or parameter
3813/// - = ::EvalParameter1 - if only one unary operation
3814/// - = ::EvalPrimitive2 - if only one binary operation
3815
3816void TFormula::Optimize()
3817{
3818 //
3819 // Initialize data members
3820 //
3821
3822 Int_t i;
3823
3824 if (fPredefined) { delete [] fPredefined; fPredefined = 0;}
3825 if (fOperOffset) { delete [] fOperOffset; fOperOffset = 0;}
3826 if (fExprOptimized) { delete [] fExprOptimized; fExprOptimized = 0;}
3827 if (fOperOptimized) { delete [] fOperOptimized; fOperOptimized = 0;}
3828
3829 fExprOptimized = new TString[fNoper];
3830 fOperOptimized = new Int_t[fNoper];
3831 fPredefined = new ROOT::v5::TFormulaPrimitive*[fNoper];
3832 fOperOffset = new TOperOffset[fNoper];
3833 for (i=0; i<fNoper; i++) {
3834 fExprOptimized[i] = fExpr[i] ;
3835 fOperOptimized[i] = fOper[i];
3836 fPredefined[i]= 0;
3837 }
3838
3839 //
3840 //Make primitives
3841 //
3842 for (i=0;i<fNoper;i++){
3843 if (fExprOptimized[i].Data()) {
3844 MakePrimitive(fExprOptimized[i].Data(), i);
3845 }
3846 }
3847 //
3848 Int_t maxfound = fNoper+1;
3849 Int_t *offset = new Int_t[maxfound*16];
3850 Int_t *optimized = new Int_t[maxfound];
3851 //
3852 //
3853 ROOT::v5::TFormulaPrimitive* primitive[10];
3854 primitive[0] = ROOT::v5::TFormulaPrimitive::FindFormula("PlusXY");
3855 primitive[1] = ROOT::v5::TFormulaPrimitive::FindFormula("MinusXY");
3856 primitive[2] = ROOT::v5::TFormulaPrimitive::FindFormula("MultXY");
3857 primitive[3] = ROOT::v5::TFormulaPrimitive::FindFormula("DivXY");
3858 primitive[4] = ROOT::v5::TFormulaPrimitive::FindFormula("XpYpZ");
3859 primitive[5] = ROOT::v5::TFormulaPrimitive::FindFormula("XxYxZ");
3860 primitive[6] = ROOT::v5::TFormulaPrimitive::FindFormula("XxYpZ");
3861 primitive[7] = ROOT::v5::TFormulaPrimitive::FindFormula("XpYxZ");
3862 primitive[8] = ROOT::v5::TFormulaPrimitive::FindFormula("Pow2");
3863 primitive[9] = ROOT::v5::TFormulaPrimitive::FindFormula("Pow3");
3864 //
3865 // set data pointers
3866 //
3867 for (i=0;i<fNoper;i++) optimized[i]=0;
3868 //
3869 for (i=0;i<fNoper;i++){
3870 Int_t actionparam = GetActionParamOptimized(i);
3871 Int_t action = GetActionOptimized(i);
3872
3873 if (action==kBoolOptimize){
3874 //
3875 // optimize booleans
3876 //
3877 fOperOffset[i].fType1 = actionparam/10; // operands to skip
3878 fOperOffset[i].fOffset0 = actionparam%10; // 1 is && , 2 is || - operand
3879 fOperOffset[i].fToJump = i+fOperOffset[i].fType1; // where we should jump
3880 continue;
3881 }
3882 if (action==kJump || action==kJumpIf) {
3883 // Ternary conditional operator
3884 fOperOffset[i].fType1 = action;
3885 fOperOffset[i].fToJump = actionparam;
3886 }
3887 //
3888 if (action==kConstant&&i<fNoper-2){
3889 //
3890 // get offsets for kFDM operands
3891 //
3892 if (GetActionOptimized(i+1)==kConstant && GetActionOptimized(i+2)==kFDM){
3893 optimized[i]=1;
3894 optimized[i+1]=1;
3895 i+=2;
3896 fOperOffset[i].fType0=actionparam;
3897 fOperOffset[i].fOffset0=GetActionParamOptimized(i-1);
3898 Int_t offset2 = int(fConst[fOperOffset[i].fOffset0]+0.4);
3899 fOperOffset[i].fOffset0=offset2;
3900 Int_t nparmax = offset2+fPredefined[i]->fNParameters;
3901 if (nparmax>fNpar){ // increase expected number of parameters
3902 fNpar=nparmax;
3903 }
3904 continue;
3905 }
3906 }
3907 switch(action){
3908 case kVariable : {action=kData; fOperOffset[i].fType0=0; break;}
3909 case kParameter: {action=kData; fOperOffset[i].fType0=1; break;}
3910 case kConstant : {action=kData; fOperOffset[i].fType0=2; break;}
3911 }
3912 //
3913 fOperOffset[i].fOffset0 = GetActionParamOptimized(i);
3914 SetActionOptimized(i,action, actionparam); //set common data option
3915 }
3916 //
3917 //
3918 fNOperOptimized = fNoper;
3919 //
3920 for (i=0; i<fNoper; ++i)
3921 {
3922 //
3923 if (!(GetActionOptimized(i)== kData)) continue;
3924 offset[0] = fOperOffset[i].fType0; //
3925 offset[1] = fOperOptimized[i] & kTFOperMask; // offset
3926
3927 if ((i+1) >= fNoper) continue;
3928
3929 if (GetActionOptimized(i+1)==kFD1){
3930 optimized[i] = 1; // to be optimized
3931 i++;
3932 fOperOffset[i].fType0 = offset[0];
3933 fOperOffset[i].fOffset0 = offset[1];
3934 SetActionOptimized(i ,kUnary);
3935 continue;
3936 }
3937 if (GetActionOptimized(i+1)==kAdd){
3938 optimized[i] = 1; // to be optimized
3939 i++;
3940 fOperOffset[i].fType0 = offset[0];
3941 fOperOffset[i].fOffset0 = offset[1];
3942 SetActionOptimized(i ,kPlusD);
3943 continue;
3944 }
3945 if (GetActionOptimized(i+1)==kMultiply){
3946 optimized[i] = 1; // to be optimized
3947 i++;
3948 fOperOffset[i].fType0 = offset[0];
3949 fOperOffset[i].fOffset0 = offset[1];
3950 SetActionOptimized(i,kMultD);
3951 continue;
3952 }
3953
3954 if ((i+2) >= fNoper) continue;
3955
3956 //
3957 //Binary operators
3958 if (!(GetActionOptimized(i+1)== kData)) continue;
3959 offset[2] = fOperOffset[i+1].fType0;
3960 offset[3] = fOperOptimized[i+1] & kTFOperMask; // offset
3961 //
3962 if (GetActionOptimized(i+2)==kFD2 || GetActionOptimized(i+2)==kAdd ||GetActionOptimized(i+2)==kSubstract||
3963 GetActionOptimized(i+2)==kMultiply || GetActionOptimized(i+2)==kDivide){
3964
3965 optimized[i] = 1; // to be optimized
3966 optimized[i+1] = 1; // to be optimized
3967 i+=2;
3968 //
3969 fOperOffset[i].fType0 = offset[0];
3970 fOperOffset[i].fOffset0 = offset[1];
3971 fOperOffset[i].fType1 = offset[2];
3972 fOperOffset[i].fOffset1 = offset[3];
3973 fOperOffset[i].fType2 = GetActionOptimized(i); //remember old action
3974 if (GetActionOptimized(i)==kAdd) {fPredefined[i] = primitive[0];}
3975 if (GetActionOptimized(i)==kSubstract) {fPredefined[i] = primitive[1];}
3976 if (GetActionOptimized(i)==kMultiply) {
3977 fPredefined[i]=primitive[2];
3978 if (offset[0]==offset[2]&&offset[1]==offset[3]) {
3979 fPredefined[i] = primitive[8];
3980 SetActionOptimized(i,kUnary);
3981 continue;
3982 }
3983 }
3984 if (GetActionOptimized(i)==kDivide) {
3985 fPredefined[i] = primitive[3];
3986 }
3987 SetActionOptimized(i,kBinary);
3988 continue;
3989 }
3990
3991 if ((i+3) >= fNoper) continue;
3992
3993 //
3994 //operator 3
3995 //
3996 if (!(GetActionOptimized(i+2)== kData)) continue;
3997 offset[4] = fOperOffset[i+2].fType0;
3998 offset[5] = fOperOptimized[i+2] & kTFOperMask; // offset
3999 //
4000 if (GetActionOptimized(i+3)==kFD3|| ( (GetActionOptimized(i+3)==kAdd||GetActionOptimized(i+3)==kMultiply) &&
4001 (GetActionOptimized(i+4)==kAdd||GetActionOptimized(i+4)==kMultiply) ) ){
4002 optimized[i+0] = 1; // to be optimized
4003 optimized[i+1] = 1; // to be optimized
4004 optimized[i+2] = 1; // to be optimized
4005 i+=3;
4006 //
4007 fOperOffset[i].fType0 = offset[0];
4008 fOperOffset[i].fOffset0 = offset[1];
4009 fOperOffset[i].fType1 = offset[2];
4010 fOperOffset[i].fOffset1 = offset[3];
4011 fOperOffset[i].fType2 = offset[4];
4012 fOperOffset[i].fOffset2 = offset[5];
4013 //
4014 fOperOffset[i].fOldAction = GetActionOptimized(i); //remember old action
4015 if (GetActionOptimized(i)==kFD3) {
4016 SetActionOptimized(i,kThree);
4017 continue;
4018 }
4019 Int_t action=0;
4020 Int_t action2=kThree;
4021 if (GetActionOptimized(i)==kAdd&&GetActionOptimized(i+1)==kAdd) action=4;
4022 if (GetActionOptimized(i)==kMultiply&&GetActionOptimized(i+1)==kMultiply) {
4023 action=5;
4024 if (offset[0]==offset[2]&&offset[1]==offset[3]&&offset[0]==offset[4]&&offset[1]==offset[5]){
4025 fPredefined[i]=primitive[9];
4026 action2=kUnary;
4027 action =9;
4028 }
4029 }
4030 if (GetActionOptimized(i)==kAdd&&GetActionOptimized(i+1)==kMultiply) action=6;
4031 if (GetActionOptimized(i)==kMultiply&&GetActionOptimized(i+1)==kAdd) action=7;
4032 //
4033 optimized[i]=1;
4034 i++;
4035 fOperOffset[i].fType0 = offset[0];
4036 fOperOffset[i].fOffset0 = offset[1];
4037 fOperOffset[i].fType1 = offset[2];
4038 fOperOffset[i].fOffset1 = offset[3];
4039 fOperOffset[i].fType2 = offset[4];
4040 fOperOffset[i].fOffset2 = offset[5];
4041 fPredefined[i]=primitive[action];
4042 SetActionOptimized(i,action2);
4043 continue;
4044 }
4045 }
4046 //
4047 //
4048 Int_t operO=0;
4049 TString expr="";
4050 Int_t *map0 = new Int_t[maxfound]; //remapping of the operands
4051 Int_t *map1 = new Int_t[maxfound]; //remapping of the operands
4052 for (i=0;i<fNoper;i++){
4053 map0[i] = operO;
4054 map1[operO] = i;
4055 fOperOptimized[operO] = fOperOptimized[i];
4056 fPredefined[operO] = fPredefined[i];
4057 fOperOffset[operO] = fOperOffset[i];
4058 expr += fExprOptimized[i];
4059 if (optimized[i]==0){
4060 fExprOptimized[operO] = expr;
4061 expr = "";
4062 operO++;
4063 }else{
4064 expr += ",";
4065 }
4066 }
4067 //
4068 // Recalculate long jump for Boolean optimize
4069 //
4070 for (i=0; i<fNOperOptimized; i++){
4071 Int_t optaction = GetActionOptimized(i);
4072 if (optaction==kBoolOptimize){
4073 Int_t oldpos = fOperOffset[i].fToJump;
4074 Int_t newpos = oldpos==fNoper ? fNOperOptimized : map0[oldpos];
4075 fOperOffset[i].fToJump = newpos; // new position to jump
4076 Int_t actionop = GetActionParamOptimized(i) % 10;
4077 switch (actionop) {
4078 case 1: SetActionOptimized(i,kBoolOptimizeAnd,newpos); break;
4079 case 2: SetActionOptimized(i,kBoolOptimizeOr,newpos); break;
4080 }
4081 } else if (optaction==kJump || optaction==kJumpIf) {
4082 Int_t oldpos = fOperOffset[i].fToJump;
4083 Int_t newpos = oldpos==fNoper ? fNOperOptimized : map0[oldpos];
4084 fOperOffset[i].fToJump = newpos; // new position to jump
4085 SetActionOptimized(i,optaction,newpos);
4086 }
4087 }
4088
4089
4090 fNOperOptimized = operO;
4091 //
4092 fOptimal= (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalParFast;
4093 if (fNOperOptimized==1) {
4094 switch(GetActionOptimized(0)){
4095 case kData : {fOptimal= (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive0; break;}
4096 case kUnary : {fOptimal= (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive1; break;}
4097 case kBinary : {fOptimal= (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive2; break;}
4098 case kThree : {fOptimal= (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive3; break;}
4099 case kFDM : {fOptimal= (ROOT::v5::TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive4; break;}
4100 }
4101 }
4102
4103 delete [] map1;
4104 delete [] map0;
4105 delete [] offset;
4106 delete [] optimized;
4107}
4108
4109////////////////////////////////////////////////////////////////////////////////
4110/// Evaluate primitive formula
4111
4112Double_t TFormula::EvalPrimitive(const Double_t *x, const Double_t *params)
4113{
4114 const Double_t *pdata[3] = {x,(params!=0)?params:fParams, fConst};
4115 Double_t result = pdata[fOperOffset->fType0][fOperOffset->fOffset0];
4116 switch((fOperOptimized[0] >> kTFOperShift)) {
4117 case kData : return result;
4118 case kUnary : return (fPredefined[0]->fFunc10)(pdata[fOperOffset->fType0][fOperOffset->fOffset0]);
4119 case kBinary :return (fPredefined[0]->fFunc110)(result,
4120 pdata[fOperOffset->fType1][fOperOffset->fOffset1]);
4121
4122 case kThree :return (fPredefined[0]->fFunc1110)(result, pdata[fOperOffset->fType1][fOperOffset->fOffset1],
4123 pdata[fOperOffset->fType2][fOperOffset->fOffset2]);
4124 case kFDM : return (fPredefined[0]->fFuncG)((Double_t*)&x[fOperOffset->fType0],
4125 (Double_t*)&params[fOperOffset->fOffset0]);
4126 }
4127 return 0;
4128}
4129
4130////////////////////////////////////////////////////////////////////////////////
4131/// Evaluate primitive formula
4132
4133Double_t TFormula::EvalPrimitive0(const Double_t *x, const Double_t *params)
4134{
4135 const Double_t *pdata[3] = {x,(params!=0)?params:fParams, fConst};
4136 return pdata[fOperOffset->fType0][fOperOffset->fOffset0];
4137}
4138
4139////////////////////////////////////////////////////////////////////////////////
4140/// Evaluate primitive formula
4141
4142Double_t TFormula::EvalPrimitive1(const Double_t *x, const Double_t *params)
4143{
4144 const Double_t *pdata[3] = {x,(params!=0)?params:fParams, fConst};
4145 return (fPredefined[0]->fFunc10)(pdata[fOperOffset->fType0][fOperOffset->fOffset0]);
4146}
4147
4148////////////////////////////////////////////////////////////////////////////////
4149/// Evaluate primitive formula
4150
4151Double_t TFormula::EvalPrimitive2(const Double_t *x, const Double_t *params)
4152{
4153 const Double_t *pdata[3] = {x,(params!=0)?params:fParams, fConst};
4154 return (fPredefined[0]->fFunc110)(pdata[fOperOffset->fType0][fOperOffset->fOffset0],
4155 pdata[fOperOffset->fType1][fOperOffset->fOffset1]);
4156}
4157
4158////////////////////////////////////////////////////////////////////////////////
4159/// Evaluate primitive formula
4160
4161Double_t TFormula::EvalPrimitive3(const Double_t *x, const Double_t *params)
4162{
4163 const Double_t *pdata[3] = {x,(params!=0)?params:fParams, fConst};
4164 return (fPredefined[0]->fFunc1110)(pdata[fOperOffset->fType0][fOperOffset->fOffset0], pdata[fOperOffset->fType1][fOperOffset->fOffset1],
4165 pdata[fOperOffset->fType2][fOperOffset->fOffset2]);
4166}
4167
4168////////////////////////////////////////////////////////////////////////////////
4169/// Evaluate primitive formula
4170
4171Double_t TFormula::EvalPrimitive4(const Double_t *x, const Double_t *params)
4172{
4173 const Double_t *par = (params!=0)?params:fParams;
4174 return (fPredefined[0]->fFuncG)((Double_t*)&x[fOperOffset->fType0],
4175 (Double_t*)&par[fOperOffset->fOffset0]);
4176}
4177
4178////////////////////////////////////////////////////////////////////////////////
4179/// Evaluate this formula.
4180///
4181/// The current value of variables x,y,z,t is passed through the pointer x.
4182/// The parameters used will be the ones in the array params if params is given
4183/// otherwise parameters will be taken from the stored data members fParams
4184///
4185/// \image html TFormula_eval.png
4186
4187Double_t TFormula::EvalParFast(const Double_t *x, const Double_t *uparams)
4188{
4189 const Double_t *pdata[3] = {x,(uparams!=0)?uparams:fParams, fConst};
4190 //
4191 Int_t i,j;
4192 Double_t tab[kMAXFOUND] = {0};
4193 const char *stringStack[gMAXSTRINGFOUND] = {0};
4194 Double_t param_calc[kMAXFOUND];
4195 char *string_calc[gMAXSTRINGFOUND] = {0};
4196 Int_t precalculated = 0;
4197 Int_t precalculated_str = 0;
4198
4199 Double_t *params;
4200
4201 if (uparams) {
4202 //for (j=0;j<fNpar;j++) fParams[j] = params[j];
4203 params = const_cast<Double_t*>(uparams);
4204 } else {
4205 params = fParams;
4206 }
4207
4208 //if (params) {
4209 // for (j=0;j<fNpar;j++) fParams[j] = params[j];
4210 //}
4211 UInt_t pos = 0;
4212 UInt_t strpos = 0;
4213 // for (i=0; i<fNoper; ++i) {
4214 for (i=0; i<fNOperOptimized; ++i) {
4215 //
4216 const int oper = fOperOptimized[i];
4217 const int opcode = oper >> kTFOperShift;
4218
4219 switch(opcode) { // FREQUENTLY USED OPERATION
4220 case kData : tab[pos] = pdata[fOperOffset[i].fType0][fOperOffset[i].fOffset0]; pos++;continue;
4221 case kPlusD : tab[pos-1]+= pdata[fOperOffset[i].fType0][fOperOffset[i].fOffset0]; continue;
4222 case kMultD : tab[pos-1]*= pdata[fOperOffset[i].fType0][fOperOffset[i].fOffset0]; continue;
4223 case kAdd : pos--; tab[pos-1] += tab[pos]; continue;
4224 case kSubstract : pos--; tab[pos-1] -= tab[pos]; continue;
4225 case kMultiply : pos--; tab[pos-1] *= tab[pos]; continue;
4226 case kDivide : pos--; if (tab[pos] == 0) tab[pos-1] = 0; // division by 0
4227 else tab[pos-1] /= tab[pos];
4228 continue;
4229 case kUnary : tab[pos] = (fPredefined[i]->fFunc10)(pdata[fOperOffset[i].fType0][fOperOffset[i].fOffset0]); pos++;continue;
4230 case kBinary : tab[pos] = (fPredefined[i]->fFunc110)(pdata[fOperOffset[i].fType0][fOperOffset[i].fOffset0],
4231 pdata[fOperOffset[i].fType1][fOperOffset[i].fOffset1]);pos++;continue;
4232
4233 case kThree : tab[pos] = (fPredefined[i]->fFunc1110)(pdata[fOperOffset[i].fType0][fOperOffset[i].fOffset0],
4234 pdata[fOperOffset[i].fType1][fOperOffset[i].fOffset1],
4235 pdata[fOperOffset[i].fType2][fOperOffset[i].fOffset2]); pos++; continue;
4236
4237 case kFDM : tab[pos] = (fPredefined[i]->fFuncG)(&x[fOperOffset[i].fType0],&params[fOperOffset[i].fOffset0]); pos++;continue;
4238 case kFD1 : tab[pos-1] =(fPredefined[i]->fFunc10)(tab[pos-1]); continue;
4239 case kFD2 : pos--; tab[pos-1] = (fPredefined[i]->fFunc110)(tab[pos-1],tab[pos]); continue;
4240 case kFD3 : pos-=2; tab[pos-1] = (fPredefined[i]->fFunc1110)(tab[pos-1],tab[pos],tab[pos+1]); continue;
4241 }
4242 //
4243 switch(opcode) {
4244 case kBoolOptimizeAnd: {
4245 if (!tab[pos-1]) i=fOperOffset[i].fToJump;
4246 continue;
4247 }
4248 case kBoolOptimizeOr: {
4249 if (tab[pos-1]) i=fOperOffset[i].fToJump;
4250 continue;
4251 }
4252 case kAnd : pos--; tab[pos-1] = (bool)tab[pos]; continue; // use the fact that other were check before - see bool optimize
4253 case kOr : pos--; tab[pos-1] = (bool)tab[pos]; continue;
4254 }
4255 switch(opcode) {
4256 // case kabs : tab[pos-1] = TMath::Abs(tab[pos-1]); continue;
4257 case kabs : if (tab[pos-1]<0) tab[pos-1]=-tab[pos-1]; continue;
4258 case ksign : if (tab[pos-1] < 0) tab[pos-1] = -1; else tab[pos-1] = 1; continue;
4259 case kint : tab[pos-1] = Double_t(Int_t(tab[pos-1])); continue;
4260 case kpow : pos--; tab[pos-1] = TMath::Power(tab[pos-1],tab[pos]); continue;
4261
4262 case kModulo : {pos--;
4263 Long64_t int1((Long64_t)tab[pos-1]);
4264 Long64_t int2((Long64_t)tab[pos]);
4265 tab[pos-1] = Double_t(int1%int2);
4266 continue;}
4267
4268
4269 case kStringConst: { strpos++; stringStack[strpos-1] = (char*)fExprOptimized[i].Data(); pos++; tab[pos-1] = 0; continue; }
4270 case kfmod : pos--; tab[pos-1] = fmod(tab[pos-1],tab[pos]); continue;
4271
4272 case kstrstr : strpos -= 2; pos-=2; pos++;
4273 if (strstr(stringStack[strpos],stringStack[strpos+1])) tab[pos-1]=1;
4274 else tab[pos-1]=0;
4275 continue;
4276 case kpi : pos++; tab[pos-1] = TMath::ACos(-1); continue;
4277
4278
4279 case kSignInv: tab[pos-1] = -1 * tab[pos-1]; continue;
4280
4281 case krndm : pos++; tab[pos-1] = gRandom->Rndm(); continue;
4282
4283
4284 case kEqual: pos--; if (tab[pos-1] == tab[pos]) tab[pos-1]=1;
4285 else tab[pos-1]=0;
4286 continue;
4287 case kNotEqual : pos--; if (tab[pos-1] != tab[pos]) tab[pos-1]=1;
4288 else tab[pos-1]=0;
4289 continue;
4290 case kNot : if (tab[pos-1]!=0) tab[pos-1] = 0; else tab[pos-1] = 1;
4291 continue;
4292
4293 case kStringEqual : strpos -= 2; pos -=2 ; pos++;
4294 if (!strcmp(stringStack[strpos+1],stringStack[strpos])) tab[pos-1]=1;
4295 else tab[pos-1]=0;
4296 continue;
4297 case kStringNotEqual: strpos -= 2; pos -= 2; pos++;
4298 if (strcmp(stringStack[strpos+1],stringStack[strpos])) tab[pos-1]=1;
4299 else tab[pos-1]=0;
4300 continue;
4301
4302 case kBitAnd : pos--; tab[pos-1]= ((Int_t) tab[pos-1]) & ((Int_t) tab[pos]); continue;
4303 case kBitOr : pos--; tab[pos-1]= ((Int_t) tab[pos-1]) | ((Int_t) tab[pos]); continue;
4304 case kLeftShift : pos--; tab[pos-1]= ((Int_t) tab[pos-1]) <<((Int_t) tab[pos]); continue;
4305 case kRightShift: pos--; tab[pos-1]= ((Int_t) tab[pos-1]) >>((Int_t) tab[pos]); continue;
4306
4307 case kJump : i = (oper & kTFOperMask); continue;
4308 case kJumpIf : pos--; if (!tab[pos]) i = (oper & kTFOperMask); continue;
4309
4310 case kBoolOptimize: {
4311 // boolean operation optimizer
4312
4313 int param = (oper & kTFOperMask);
4314 int op = param % 10; // 1 is && , 2 is ||
4315
4316 if (op == 1 && (!tab[pos-1]) ) {
4317 // &&: skip the right part if the left part is already false
4318
4319 i += param / 10;
4320
4321 // Preserve the existing behavior (i.e. the result of a&&b is
4322 // either 0 or 1)
4323 tab[pos-1] = 0;
4324
4325 } else if (op == 2 && tab[pos-1] ) {
4326 // ||: skip the right part if the left part is already true
4327
4328 i += param / 10;
4329
4330 // Preserve the existing behavior (i.e. the result of a||b is
4331 // either 0 or 1)
4332 tab[pos-1] = 1;
4333
4334 }
4335
4336 continue;
4337 }
4338
4339 }
4340 switch(opcode) {
4341
4342#define R__EXPO(var) \
4343 { \
4344 pos++; int param = (oper & kTFOperMask); \
4345 tab[pos-1] = TMath::Exp(params[param]+params[param+1]*x[var]); \
4346 continue; \
4347 }
4348 // case kexpo:
4349 case kxexpo: R__EXPO(0);
4350 case kyexpo: R__EXPO(1);
4351 case kzexpo: R__EXPO(2);
4352 case kxyexpo:{ pos++; int param = (oper & kTFOperMask);
4353 tab[pos-1] = TMath::Exp(params[param]+params[param+1]*x[0]+params[param+2]*x[1]);
4354 continue; }
4355#ifdef R__GAUS
4356#undef R__GAUS
4357#endif
4358#define R__GAUS(var) \
4359 { \
4360 pos++; int param = (oper & kTFOperMask); \
4361 tab[pos-1] = params[param]*TMath::Gaus(x[var],params[param+1], \
4362 params[param+2],IsNormalized()); \
4363 continue; \
4364 }
4365
4366 // case kgaus:
4367 case kxgaus: R__GAUS(0);
4368 case kygaus: R__GAUS(1);
4369 case kzgaus: R__GAUS(2);
4370 case kxygaus: { pos++; int param = (oper & kTFOperMask);
4371 Double_t intermede1;
4372 if (params[param+2] == 0) {
4373 intermede1=1e10;
4374 } else {
4375 intermede1=Double_t((x[0]-params[param+1])/params[param+2]);
4376 }
4377 Double_t intermede2;
4378 if (params[param+4] == 0) {
4379 intermede2=1e10;
4380 } else {
4381 intermede2=Double_t((x[1]-params[param+3])/params[param+4]);
4382 }
4383 tab[pos-1] = params[param]*TMath::Exp(-0.5*(intermede1*intermede1+intermede2*intermede2));
4384 continue; }
4385
4386#define R__LANDAU(var) \
4387 { \
4388 pos++; const int param = (oper & kTFOperMask); \
4389 tab[pos-1] = params[param]*TMath::Landau(x[var],params[param+1],params[param+2],IsNormalized()); \
4390 continue; \
4391 }
4392 // case klandau:
4393 case kxlandau: R__LANDAU(0);
4394 case kylandau: R__LANDAU(1);
4395 case kzlandau: R__LANDAU(2);
4396 case kxylandau: { pos++; int param = oper&0x7fffff /* ActionParams[i] */ ;
4397 Double_t intermede1=TMath::Landau(x[0], params[param+1], params[param+2],IsNormalized());
4398 Double_t intermede2=TMath::Landau(x[1], params[param+3], params[param+4],IsNormalized());
4399 tab[pos-1] = params[param]*intermede1*intermede2;
4400 continue;
4401 }
4402
4403#define R__POLY(var) \
4404 { \
4405 pos++; int param = (oper & kTFOperMask); \
4406 tab[pos-1] = 0; Double_t intermede = 1; \
4407 Int_t inter = param/100; /* arrondit */ \
4408 Int_t int1= param-inter*100-1; /* aucune simplification ! (sic) */ \
4409 for (j=0 ;j<inter+1;j++) { \
4410 tab[pos-1] += intermede*params[j+int1]; \
4411 intermede *= x[var]; \
4412 } \
4413 continue; \
4414 }
4415 // case kpol:
4416 case kxpol: R__POLY(0);
4417 case kypol: R__POLY(1);
4418 case kzpol: R__POLY(2);
4419
4420 case kDefinedVariable : {
4421 if (!precalculated) {
4422 precalculated = 1;
4423 for(j=0;j<fNval;j++) param_calc[j]=DefinedValue(j);
4424 }
4425 pos++; tab[pos-1] = param_calc[(oper & kTFOperMask)];
4426 continue;
4427 }
4428
4429 case kDefinedString : {
4430 int param = (oper & kTFOperMask);
4431 if (!precalculated_str) {
4432 precalculated_str=1;
4433 for (j=0;j<fNstring;j++) string_calc[j]=DefinedString(j);
4434 }
4435 strpos++; stringStack[strpos-1] = string_calc[param];
4436 pos++; tab[pos-1] = 0;
4437 continue;
4438 }
4439
4440 case kFunctionCall: {
4441 // an external function call
4442
4443 int param = (oper & kTFOperMask);
4444 int fno = param / 1000;
4445 int nargs = param % 1000;
4446
4447 // Retrieve the function
4448 TMethodCall *method = (TMethodCall*)fFunctions.At(fno);
4449
4450 // Set the arguments
4451 method->ResetParam();
4452 if (nargs) {
4453 UInt_t argloc = pos-nargs;
4454 for(j=0;j<nargs;j++,argloc++,pos--) {
4455 method->SetParam(tab[argloc]);
4456 }
4457 }
4458 pos++;
4459 Double_t ret;
4460 method->Execute(ret);
4461 tab[pos-1] = ret; // check for the correct conversion!
4462
4463 continue;
4464 };
4465 }
4466 if (!TestBit(kOptimizationError)) {
4467 SetBit(kOptimizationError);
4468 Warning("EvalParFast","Found an unsupported optmized opcode (%d)",oper >> kTFOperShift);
4469 }
4470 }
4471 Double_t result0 = tab[0];
4472 return result0;
4473
4474}
4475
4476////////////////////////////////////////////////////////////////////////////////
4477/// Pre compile function
4478
4479Int_t TFormula::PreCompile()
4480{
4481 TString str = fTitle;
4482 if (str.Length()<3) return 1;
4483 if (str[str.Length()-1]!='+'&&str[str.Length()-2]!='+') return 1;
4484 str[str.Length()-2]=0;
4485 TString funName("preformula_");
4486 funName += fName;
4487 if (ROOT::v5::TFormulaPrimitive::FindFormula(funName)) return 0;
4488 TString fileName;
4489 fileName.Form("/tmp/%s.C",funName.Data());
4490
4491 FILE *hf;
4492 hf = fopen(fileName.Data(),"w");
4493 if (hf == 0) {
4494 Error("PreCompile","Unable to open the file %s for writing.",fileName.Data());
4495 return 1;
4496 }
4497 fprintf(hf, "/////////////////////////////////////////////////////////////////////////\n");
4498 fprintf(hf, "// This code has been automatically generated \n");
4499 //
4500 fprintf(hf, "Double_t %s(Double_t *x, Double_t *p){",funName.Data());
4501 fprintf(hf, "return (%s);\n}",str.Data());
4502
4503 // fprintf("ROOT::v5::TFormulaPrimitive::AddFormula(new ROOT::v5::TFormulaPrimitive(\"%s::%s\",\"%s::%s\",(ROOT::v5::TFormulaPrimitive::GenFunc0)%s::%s));\n",
4504 // clname,method->GetName(),clname,method->GetName(),clname,method->GetName());
4505 fclose(hf);
4506
4507 return 0;
4508
4509
4510}
4511
4512////////////////////////////////////////////////////////////////////////////////
4513/// static function to set the maximum value of 3 parameters
4514///
4515/// - maxop : maximum number of operations
4516/// - maxpar : maximum number of parameters
4517/// - maxconst : maximum number of constants
4518///
4519/// None of these parameters cannot be less than 10 (default is 1000)
4520/// call this function to increase one or all maxima when processing
4521/// very complex formula, eg TFormula::SetMaxima(100000,1000,1000000);
4522/// If you process many functions with a small number of operations/parameters
4523/// you may gain some memory and performance by decreasing these values.
4524
4525void TFormula::SetMaxima(Int_t maxop, Int_t maxpar, Int_t maxconst)
4526{
4527 gMAXOP = TMath::Max(10,maxop);
4528 gMAXPAR = TMath::Max(10,maxpar);
4529 gMAXCONST = TMath::Max(10,maxconst);
4530}
4531
4532////////////////////////////////////////////////////////////////////////////////
4533/// static function to get the maximum value of 3 parameters
4534/// -maxop : maximum number of operations
4535/// -maxpar : maximum number of parameters
4536/// -maxconst : maximum number of constants
4537
4538void TFormula::GetMaxima(Int_t& maxop, Int_t& maxpar, Int_t& maxconst)
4539{
4540 maxop = gMAXOP;
4541 maxpar = gMAXPAR;
4542 maxconst = gMAXCONST;
4543}
4544
4545 } // end namespace v5
4546
4547} // end namespace ROOT
Class
void Class()
Definition: Class.C:29
v
SVector< double, 2 > v
Definition: Dict.h:5
b
#define b(i)
Definition: RSha256.hxx:100
f
#define f(i)
Definition: RSha256.hxx:104
c
#define c(i)
Definition: RSha256.hxx:101
s1
#define s1(x)
Definition: RSha256.hxx:91
e
#define e(i)
Definition: RSha256.hxx:103
Int_t
int Int_t
Definition: RtypesCore.h:41
Version_t
short Version_t
Definition: RtypesCore.h:61
Ssiz_t
int Ssiz_t
Definition: RtypesCore.h:63
UInt_t
unsigned int UInt_t
Definition: RtypesCore.h:42
kFALSE
const Bool_t kFALSE
Definition: RtypesCore.h:88
ULong_t
unsigned long ULong_t
Definition: RtypesCore.h:51
Long_t
long Long_t
Definition: RtypesCore.h:50
Bool_t
bool Bool_t
Definition: RtypesCore.h:59
Double_t
double Double_t
Definition: RtypesCore.h:55
Long64_t
long long Long64_t
Definition: RtypesCore.h:69
Float_t
float Float_t
Definition: RtypesCore.h:53
kTRUE
const Bool_t kTRUE
Definition: RtypesCore.h:87
Option_t
const char Option_t
Definition: RtypesCore.h:62
BIT
#define BIT(n)
Definition: Rtypes.h:83
ClassImp
#define ClassImp(name)
Definition: Rtypes.h:365
R__ASSERT
#define R__ASSERT(e)
Definition: TError.h:96
R__GAUS
#define R__GAUS(var)
R__LANDAU
#define R__LANDAU(var)
gMAXCONST
static Int_t gMAXCONST
Definition: TFormula_v5.cxx:32
gMAXSTRINGFOUND
const Int_t gMAXSTRINGFOUND
Definition: TFormula_v5.cxx:33
R__POLY
#define R__POLY(var)
gMAXPAR
static Int_t gMAXPAR
Definition: TFormula_v5.cxx:32
R__EXPO
#define R__EXPO(var)
gMAXOP
static Int_t gMAXOP
Definition: TFormula_v5.cxx:32
kOptimizationError
const UInt_t kOptimizationError
Definition: TFormula_v5.cxx:34
name
char name[80]
Definition: TGX11.cxx:109
gInterpreter
#define gInterpreter
Definition: TInterpreter.h:553
gROOTMutex
R__EXTERN TVirtualMutex * gROOTMutex
Definition: TROOT.h:59
gROOT
#define gROOT
Definition: TROOT.h:414
gRandom
R__EXTERN TRandom * gRandom
Definition: TRandom.h:62
Form
char * Form(const char *fmt,...)
Printf
void Printf(const char *fmt,...)
R__LOCKGUARD
#define R__LOCKGUARD(mutex)
Definition: TVirtualMutex.h:106
proto
const char * proto
Definition: civetweb.c:16604
snprintf
#define snprintf
Definition: civetweb.c:1540
ROOT::v5::TFormulaPrimitive
The Formula Primitive class.
Definition: TFormulaPrimitive.h:37
ROOT::v5::TFormulaPrimitive::fFunc1110
GenFunc1110 fFunc1110
pointer to the function
Definition: TFormulaPrimitive.h:58
ROOT::v5::TFormulaPrimitive::fFunc10
GenFunc10 fFunc10
pointer to the function
Definition: TFormulaPrimitive.h:56
ROOT::v5::TFormulaPrimitive::FindFormula
static TFormulaPrimitive * FindFormula(const char *name)
Find the formula in the list of formulas.
Definition: TFormulaPrimitive_v5.cxx:309
ROOT::v5::TFormulaPrimitive::TFuncG
Double_t(TObject::* TFuncG)(const Double_t *, const Double_t *) const
Definition: TFormulaPrimitive.h:45
ROOT::v5::TFormulaPrimitive::fFunc110
GenFunc110 fFunc110
pointer to the function
Definition: TFormulaPrimitive.h:57
ROOT::v5::TFormulaPrimitive::Eval
Double_t Eval(Double_t *x)
Eval primitive function at point x.
Definition: TFormulaPrimitive_v5.cxx:209
ROOT::v5::TFormula
The FORMULA class (ROOT version 5)
Definition: TFormula.h:65
ROOT::v5::TFormula::fConst
Double_t * fConst
Definition: TFormula.h:82
ROOT::v5::TFormula::GetNumber
virtual Int_t GetNumber() const
Definition: TFormula.h:239
ROOT::v5::TFormula::StringToNumber
virtual Bool_t StringToNumber(Int_t code)
Try to 'demote' a string into an array bytes.
Definition: TFormula_v5.cxx:2200
ROOT::v5::TFormula::GetParameter
Double_t GetParameter(Int_t ipar) const
Return value of parameter number ipar.
Definition: TFormula_v5.cxx:3220
ROOT::v5::TFormula::fExprOptimized
TString * fExprOptimized
Number of operators after optimization.
Definition: TFormula.h:92
ROOT::v5::TFormula::~TFormula
virtual ~TFormula()
Formula default destructor.
Definition: TFormula_v5.cxx:312
ROOT::v5::TFormula::IsNormalized
virtual Bool_t IsNormalized() const
Definition: TFormula.h:248
ROOT::v5::TFormula::DefinedValue
virtual Double_t DefinedValue(Int_t code)
Return value corresponding to special code.
Definition: TFormula_v5.cxx:2584
ROOT::v5::TFormula::Eval
virtual Double_t Eval(Double_t x, Double_t y=0, Double_t z=0, Double_t t=0) const
Evaluate this formula.
Definition: TFormula_v5.cxx:2666
ROOT::v5::TFormula::fFunctions
TObjArray fFunctions
Definition: TFormula.h:85
ROOT::v5::TFormula::GetParNumber
virtual Int_t GetParNumber(const char *name) const
Return parameter number by name.
Definition: TFormula_v5.cxx:3253
ROOT::v5::TFormula::Convert
virtual void Convert(UInt_t fromVersion)
Definition: TFormula_v5.cxx:3562
ROOT::v5::TFormula::SetActionOptimized
void SetActionOptimized(Int_t code, Int_t value, Int_t param=0)
Definition: TFormula.h:115
ROOT::v5::TFormula::EvalPrimitive1
Double_t EvalPrimitive1(const Double_t *x, const Double_t *params)
Evaluate primitive formula.
Definition: TFormula_v5.cxx:4142
ROOT::v5::TFormula::SetParName
virtual void SetParName(Int_t ipar, const char *name)
Set name of parameter number ipar.
Definition: TFormula_v5.cxx:3430
ROOT::v5::TFormula::SetParameter
virtual void SetParameter(const char *name, Double_t parvalue)
Initialize parameter number ipar.
Definition: TFormula_v5.cxx:3373
ROOT::v5::TFormula::EvalPrimitive0
Double_t EvalPrimitive0(const Double_t *x, const Double_t *params)
Evaluate primitive formula.
Definition: TFormula_v5.cxx:4133
ROOT::v5::TFormula::Update
virtual void Update()
Definition: TFormula.h:263
ROOT::v5::TFormula::AnalyzeFunction
virtual Bool_t AnalyzeFunction(TString &chaine, Int_t &err, Int_t offset=0)
Check if the chain as function call.
Definition: TFormula_v5.cxx:345
ROOT::v5::TFormula::TFormula
TFormula()
Formula default constructor.
Definition: TFormula_v5.cxx:134
ROOT::v5::TFormula::EvalPrimitive2
Double_t EvalPrimitive2(const Double_t *x, const Double_t *params)
Evaluate primitive formula.
Definition: TFormula_v5.cxx:4151
ROOT::v5::TFormula::fExpr
TString * fExpr
Definition: TFormula.h:78
ROOT::v5::TFormula::EvalParOld
virtual Double_t EvalParOld(const Double_t *x, const Double_t *params=0)
Evaluate this formula.
Definition: TFormula_v5.cxx:2685
ROOT::v5::TFormula::fLinearParts
TObjArray fLinearParts
Definition: TFormula.h:86
ROOT::v5::TFormula::ClearFormula
void ClearFormula(Option_t *option="")
Resets the objects.
Definition: TFormula_v5.cxx:2221
ROOT::v5::TFormula::GetParName
virtual const char * GetParName(Int_t ipar) const
Return name of one parameter.
Definition: TFormula_v5.cxx:3243
ROOT::v5::TFormula::SetNumber
virtual void SetNumber(Int_t number)
Definition: TFormula.h:251
ROOT::v5::TFormula::fOperOffset
TOperOffset * fOperOffset
[fNOperOptimized] List of operators. (See documentation for changes made at version 7)
Definition: TFormula.h:94
ROOT::v5::TFormula::DefinedString
virtual char * DefinedString(Int_t code)
Return address of string corresponding to special code.
Definition: TFormula_v5.cxx:2553
ROOT::v5::TFormula::Optimize
void Optimize()
MI include.
Definition: TFormula_v5.cxx:3816
ROOT::v5::TFormula::EvalParFast
Double_t EvalParFast(const Double_t *x, const Double_t *params)
Evaluate this formula.
Definition: TFormula_v5.cxx:4187
ROOT::v5::TFormula::SetParameters
virtual void SetParameters(const Double_t *params)
Initialize array of all parameters.
Definition: TFormula_v5.cxx:3395
ROOT::v5::TFormula::GetAction
Short_t GetAction(Int_t code) const
Definition: TFormula.h:104
ROOT::v5::TFormula::SetMaxima
static void SetMaxima(Int_t maxop=1000, Int_t maxpar=1000, Int_t maxconst=1000)
static function to set the maximum value of 3 parameters
Definition: TFormula_v5.cxx:4525
ROOT::v5::TFormula::Print
virtual void Print(Option_t *option="") const
Dump this formula with its attributes.
Definition: TFormula_v5.cxx:3275
ROOT::v5::TFormula::GetLinearPart
virtual const TObject * GetLinearPart(Int_t i)
Return linear part.
Definition: TFormula_v5.cxx:3210
ROOT::v5::TFormula::fNOperOptimized
Int_t fNOperOptimized
cache for information
Definition: TFormula.h:91
ROOT::v5::TFormula::ProcessLinear
virtual void ProcessLinear(TString &replaceformula)
If the formula is for linear fitting, change the title to normal and fill the LinearParts array.
Definition: TFormula_v5.cxx:3304
ROOT::v5::TFormula::GetActionOptimized
Short_t GetActionOptimized(Int_t code) const
Definition: TFormula.h:112
ROOT::v5::TFormula::CheckOperands
virtual Bool_t CheckOperands(Int_t operation, Int_t &err)
Check whether the operand at 'oper-1' is compatible with the operation at 'oper'.
Definition: TFormula_v5.cxx:2166
ROOT::v5::TFormula::EvalPrimitive3
Double_t EvalPrimitive3(const Double_t *x, const Double_t *params)
Evaluate primitive formula.
Definition: TFormula_v5.cxx:4161
ROOT::v5::TFormula::SetParNames
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")
Set up to 11 parameter names.
Definition: TFormula_v5.cxx:3439
ROOT::v5::TFormula::fOperOptimized
Int_t * fOperOptimized
[fNOperOptimized] List of expressions
Definition: TFormula.h:93
ROOT::v5::TFormula::GetNpar
virtual Int_t GetNpar() const
Definition: TFormula.h:238
ROOT::v5::TFormula::DefinedVariable
virtual Int_t DefinedVariable(TString &variable, Int_t &action)
Check if expression is in the list of defined variables.
Definition: TFormula_v5.cxx:2619
ROOT::v5::TFormula::GetActionParam
Int_t GetActionParam(Int_t code) const
Definition: TFormula.h:105
ROOT::v5::TFormula::fOptimal
TFuncG fOptimal
[fNPar] predefined function
Definition: TFormula.h:96
ROOT::v5::TFormula::fAlreadyFound
TBits fAlreadyFound
Definition: TFormula.h:88
ROOT::v5::TFormula::EvalPrimitive4
Double_t EvalPrimitive4(const Double_t *x, const Double_t *params)
Evaluate primitive formula.
Definition: TFormula_v5.cxx:4171
ROOT::v5::TFormula::Analyze
virtual void Analyze(const char *schain, Int_t &err, Int_t offset=0)
Analyze a sub-expression in one formula.
Definition: TFormula_v5.cxx:711
ROOT::v5::TFormula::GetExpFormula
virtual TString GetExpFormula(Option_t *option="") const
Reconstruct the formula expression from the internal TFormula member variables.
Definition: TFormula_v5.cxx:3020
ROOT::v5::TFormula::MakePrimitive
void MakePrimitive(const char *expr, Int_t pos)
MakePrimitive find TFormulaPrimitive replacement for some operands.
Definition: TFormula_v5.cxx:3744
ROOT::v5::TFormula::GetActionParamOptimized
Int_t GetActionParamOptimized(Int_t code) const
Definition: TFormula.h:113
ROOT::v5::TFormula::GetMaxima
static void GetMaxima(Int_t &maxop, Int_t &maxpar, Int_t &maxconst)
static function to get the maximum value of 3 parameters -maxop : maximum number of operations -maxpa...
Definition: TFormula_v5.cxx:4538
ROOT::v5::TFormula::fPredefined
TFormulaPrimitive ** fPredefined
[fNOperOptimized] Offsets of operrands
Definition: TFormula.h:95
ROOT::v5::TFormula::operator=
TFormula & operator=(const TFormula &rhs)
Operator =.
Definition: TFormula_v5.cxx:301
ROOT::v5::TFormula::Compile
virtual Int_t Compile(const char *expression="")
Compile expression already stored in fTitle.
Definition: TFormula_v5.cxx:2290
ROOT::v5::TFormula::SetAction
void SetAction(Int_t code, Int_t value, Int_t param=0)
Definition: TFormula.h:107
ROOT::v5::TFormula::Copy
virtual void Copy(TObject &formula) const
Copy this formula.
Definition: TFormula_v5.cxx:2459
ROOT::v5::TFormula::EvalPrimitive
Double_t EvalPrimitive(const Double_t *x, const Double_t *params)
Evaluate primitive formula.
Definition: TFormula_v5.cxx:4112
ROOT::v5::TFormula::Clear
virtual void Clear(Option_t *option="")
Resets the objects.
Definition: TFormula_v5.cxx:2211
ROOT::v5::TFormula::fParams
Double_t * fParams
Definition: TFormula.h:83
ROOT::v5::TFormula::Streamer
void Streamer(TBuffer &b, const TClass *onfile_class)
Stream a class object.
Definition: TFormula_v5.cxx:3458
ROOT::v5::TFormula::fNames
TString * fNames
Definition: TFormula.h:84
ROOT::v5::TFormula::IsString
virtual Bool_t IsString(Int_t oper) const
Return true if the expression at the index 'oper' has to be treated as a string.
Definition: TFormula_v5.cxx:3267
ROOT::v5::TFormula::PreCompile
Int_t PreCompile()
pointer to optimal function
Definition: TFormula_v5.cxx:4479
ROOT::v5::TOperOffset::TOperOffset
TOperOffset()
TOper offset - helper class for TFormula* specify type of operand fTypeX = kVariable = kParameter = k...
Definition: TFormula_v5.cxx:3726
TBits::TestBitNumber
Bool_t TestBitNumber(UInt_t bitnumber) const
Definition: TBits.h:222
TBits::SetBitNumber
void SetBitNumber(UInt_t bitnumber, Bool_t value=kTRUE)
Definition: TBits.h:206
TBuffer
Buffer base class used for serializing objects.
Definition: TBuffer.h:42
TClass
TClass instances represent classes, structs and namespaces in the ROOT type system.
Definition: TClass.h:75
TClass::GetClass
static TClass * GetClass(const char *name, Bool_t load=kTRUE, Bool_t silent=kFALSE)
Static method returning pointer to TClass of the specified class name.
Definition: TClass.cxx:2895
TCollection::SetOwner
virtual void SetOwner(Bool_t enable=kTRUE)
Set whether this collection is the owner (enable==true) of its content.
Definition: TCollection.cxx:744
TFunction::GetPrototype
virtual const char * GetPrototype() const
Returns the prototype of a function as defined by CINT, or 0 in case of error.
Definition: TFunction.cxx:245
TMethodCall
Method or function calling interface.
Definition: TMethodCall.h:37
TMethodCall::ReturnType
EReturnType ReturnType()
Returns the return type of the method.
Definition: TMethodCall.cxx:562
TMethodCall::ResetParam
void ResetParam()
Reset parameter list. To be used before the first call the SetParam().
Definition: TMethodCall.cxx:594
TMethodCall::kOther
static const EReturnType kOther
Definition: TMethodCall.h:46
TMethodCall::GetMethod
TFunction * GetMethod()
Returns the TMethod describing the method to be executed.
Definition: TMethodCall.cxx:383
TMethodCall::IsValid
Bool_t IsValid() const
Return true if the method call has been properly initialized and is usable.
Definition: TMethodCall.cxx:373
TMethodCall::Execute
void Execute(const char *, const char *, int *=0)
Execute method on this object with the given parameter string, e.g.
Definition: TMethodCall.h:64
TMethodCall::SetParam
void SetParam(Long_t l)
Add a long method parameter.
Definition: TMethodCall.cxx:603
TNamed
The TNamed class is the base class for all named ROOT classes.
Definition: TNamed.h:29
TNamed::Copy
virtual void Copy(TObject &named) const
Copy this to obj.
Definition: TNamed.cxx:94
TNamed::SetTitle
virtual void SetTitle(const char *title="")
Set the title of the TNamed.
Definition: TNamed.cxx:164
TNamed::fTitle
TString fTitle
Definition: TNamed.h:33
TNamed::fName
TString fName
Definition: TNamed.h:32
TNamed::GetTitle
virtual const char * GetTitle() const
Returns title of object.
Definition: TNamed.h:48
TNamed::GetName
virtual const char * GetName() const
Returns name of object.
Definition: TNamed.h:47
TObjArray
An array of TObjects.
Definition: TObjArray.h:37
TObjArray::Expand
virtual void Expand(Int_t newSize)
Expand or shrink the array to newSize elements.
Definition: TObjArray.cxx:386
TObjArray::Add
void Add(TObject *obj)
Definition: TObjArray.h:74
TObjArray::UncheckedAt
TObject * UncheckedAt(Int_t i) const
Definition: TObjArray.h:90
TObjArray::Delete
virtual void Delete(Option_t *option="")
Remove all objects from the array AND delete all heap based objects.
Definition: TObjArray.cxx:355
TObjArray::GetLast
Int_t GetLast() const
Return index of last object in array.
Definition: TObjArray.cxx:576
TObjArray::IsEmpty
Bool_t IsEmpty() const
Definition: TObjArray.h:71
TObjArray::At
TObject * At(Int_t idx) const
Definition: TObjArray.h:166
TObjString
Collectable string class.
Definition: TObjString.h:28
TObjString::String
TString & String()
Definition: TObjString.h:48
TObject
Mother of all ROOT objects.
Definition: TObject.h:37
TObject::TestBit
R__ALWAYS_INLINE Bool_t TestBit(UInt_t f) const
Definition: TObject.h:172
TObject::Clone
virtual TObject * Clone(const char *newname="") const
Make a clone of an object using the Streamer facility.
Definition: TObject.cxx:144
TObject::Warning
virtual void Warning(const char *method, const char *msgfmt,...) const
Issue warning message.
Definition: TObject.cxx:866
TObject::SetBit
void SetBit(UInt_t f, Bool_t set)
Set or unset the user status bits as specified in f.
Definition: TObject.cxx:694
TObject::Error
virtual void Error(const char *method, const char *msgfmt,...) const
Issue error message.
Definition: TObject.cxx:880
TRandom::Rndm
virtual Double_t Rndm()
Machine independent random number generator.
Definition: TRandom.cxx:541
TString
Basic string class.
Definition: TString.h:131
TString::Length
Ssiz_t Length() const
Definition: TString.h:405
TString::ToLower
void ToLower()
Change string to lower-case.
Definition: TString.cxx:1125
TString::Insert
TString & Insert(Ssiz_t pos, const char *s)
Definition: TString.h:644
TString::Replace
TString & Replace(Ssiz_t pos, Ssiz_t n, const char *s)
Definition: TString.h:677
TString::First
Ssiz_t First(char c) const
Find first occurrence of a character c.
Definition: TString.cxx:499
TString::Data
const char * Data() const
Definition: TString.h:364
TString::ReplaceAll
TString & ReplaceAll(const TString &s1, const TString &s2)
Definition: TString.h:687
TString::Last
Ssiz_t Last(char c) const
Find last occurrence of a character c.
Definition: TString.cxx:892
TString::Tokenize
TObjArray * Tokenize(const TString &delim) const
This function is used to isolate sequential tokens in a TString.
Definition: TString.cxx:2197
TString::Remove
TString & Remove(Ssiz_t pos)
Definition: TString.h:668
TString::Append
TString & Append(const char *cs)
Definition: TString.h:559
TString::Form
void Form(const char *fmt,...)
Formats a string using a printf style format descriptor.
Definition: TString.cxx:2289
TString::Contains
Bool_t Contains(const char *pat, ECaseCompare cmp=kExact) const
Definition: TString.h:619
y
Double_t y[n]
Definition: legend1.C:17
x
Double_t x[n]
Definition: legend1.C:17
n
const Int_t n
Definition: legend1.C:16
ROOT::Math::Chebyshev::T
double T(double x)
Definition: ChebyshevPol.h:34
ROOT
Namespace for new ROOT classes and functions.
Definition: StringConv.hxx:21
ROOT::kConversionMatch
@ kConversionMatch
Definition: TDictionary.h:154
TGeant4Unit::s
static constexpr double s
Definition: TGeant4SystemOfUnits.h:162
TGeant4Unit::ns
static constexpr double ns
Definition: TGeant4SystemOfUnits.h:161
TMath::CosH
Double_t CosH(Double_t)
Definition: TMath.h:641
TMath::ACos
Double_t ACos(Double_t)
Definition: TMath.h:656
TMath::Max
Short_t Max(Short_t a, Short_t b)
Definition: TMathBase.h:212
TMath::ASin
Double_t ASin(Double_t)
Definition: TMath.h:649
TMath::Exp
Double_t Exp(Double_t x)
Definition: TMath.h:715
TMath::ATan
Double_t ATan(Double_t)
Definition: TMath.h:663
TMath::ASinH
Double_t ASinH(Double_t)
Definition: TMath.cxx:64
TMath::Landau
Double_t Landau(Double_t x, Double_t mpv=0, Double_t sigma=1, Bool_t norm=kFALSE)
The LANDAU function.
Definition: TMath.cxx:469
TMath::TanH
Double_t TanH(Double_t)
Definition: TMath.h:645
TMath::ACosH
Double_t ACosH(Double_t)
Definition: TMath.cxx:77
TMath::ATan2
Double_t ATan2(Double_t, Double_t)
Definition: TMath.h:667
TMath::Log
Double_t Log(Double_t x)
Definition: TMath.h:748
TMath::Sqrt
Double_t Sqrt(Double_t x)
Definition: TMath.h:679
TMath::Power
LongDouble_t Power(LongDouble_t x, LongDouble_t y)
Definition: TMath.h:723
TMath::Min
Short_t Min(Short_t a, Short_t b)
Definition: TMathBase.h:180
TMath::Cos
Double_t Cos(Double_t)
Definition: TMath.h:629
TMath::Sin
Double_t Sin(Double_t)
Definition: TMath.h:625
TMath::Tan
Double_t Tan(Double_t)
Definition: TMath.h:633
TMath::ATanH
Double_t ATanH(Double_t)
Definition: TMath.cxx:90
TMath::Log10
Double_t Log10(Double_t x)
Definition: TMath.h:752
TMath::Abs
Short_t Abs(Short_t d)
Definition: TMathBase.h:120
TMath::SinH
Double_t SinH(Double_t)
Definition: TMath.h:637
slash
TCanvas * slash()
Definition: slash.C:1
kTFOperShift
const UChar_t kTFOperShift
Definition: TFormula.h:33
kTFOperMask
const Int_t kTFOperMask
Definition: TFormula.h:32
kMAXFOUND
const Int_t kMAXFOUND
Definition: TFormula.h:31