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a9e2aefa | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
70479d0e | 18 | Revision 1.14 2001/08/30 09:52:12 hristov |
19 | The operator[] is replaced by At() or AddAt() in case of TObjArray. | |
20 | ||
2682e810 | 21 | Revision 1.13 2001/05/03 08:11:31 hristov |
22 | stdlib.h included to define exit() | |
23 | ||
82a4bc7b | 24 | Revision 1.12 2001/04/25 14:50:42 gosset |
25 | Corrections to violations of coding conventions | |
26 | ||
3831f268 | 27 | Revision 1.11 2001/04/23 12:33:17 hristov |
28 | Arrays with variable size created by new and deleted at the end | |
29 | ||
e804eb46 | 30 | Revision 1.10 2001/04/09 12:25:09 gosset |
31 | Inversion of covariance matrices with local copy of TMinuit::mnvert, | |
32 | for symmetric positive definite matrices, instead of TMatrixD::Invert | |
33 | ||
44f59652 | 34 | Revision 1.9 2001/01/17 20:59:24 hristov |
35 | chPrev initialised | |
36 | ||
bbe35c23 | 37 | Revision 1.8 2001/01/08 11:01:02 gosset |
38 | Modifications used for addendum to Dimuon TDR (JP Cussonneau): | |
39 | *. MaxBendingMomentum to make both a segment and a track (default 500) | |
40 | *. MaxChi2 per degree of freedom to make a track (default 100) | |
41 | *. MinBendingMomentum used also to make a track | |
42 | and not only a segment (default 3) | |
43 | *. wider roads for track search in stations 1 to 3 | |
44 | *. extrapolation to actual Z instead of Z(chamber) in FollowTracks | |
45 | *. in track fit: | |
46 | - limits on parameters X and Y (+/-500) | |
47 | - covariance matrices in double precision | |
48 | - normalization of covariance matrices before inversion | |
49 | - suppression of Minuit printouts | |
50 | *. correction against memory leak (delete extrapHit) in FollowTracks | |
51 | *. RMax to 10 degrees with Z(chamber) instead of fixed values; | |
52 | RMin and Rmax cuts suppressed in NewHitForRecFromGEANT, | |
53 | because useless with realistic geometry | |
54 | ||
d0bfce8d | 55 | Revision 1.7 2000/09/19 15:50:46 gosset |
56 | TrackChi2MCS function: covariance matrix better calculated, | |
57 | taking into account missing planes... | |
58 | ||
eb9c9dab | 59 | Revision 1.6 2000/07/20 12:45:27 gosset |
60 | New "EventReconstructor..." structure, | |
61 | hopefully more adapted to tree/streamer. | |
62 | "AliMUONEventReconstructor::RemoveDoubleTracks" | |
63 | to keep only one track among similar ones. | |
64 | ||
8429a5e4 | 65 | Revision 1.5 2000/07/18 16:04:06 gosset |
66 | AliMUONEventReconstructor package: | |
67 | * a few minor modifications and more comments | |
68 | * a few corrections | |
69 | * right sign for Z of raw clusters | |
70 | * right loop over chambers inside station | |
71 | * symmetrized covariance matrix for measurements (TrackChi2MCS) | |
72 | * right sign of charge in extrapolation (ExtrapToZ) | |
73 | * right zEndAbsorber for Branson correction below 3 degrees | |
74 | * use of TVirtualFitter instead of TMinuit for AliMUONTrack::Fit | |
75 | * no parameter for AliMUONTrack::Fit() but more fit parameters in Track object | |
76 | ||
956019b6 | 77 | Revision 1.4 2000/06/30 10:15:48 gosset |
78 | Changes to EventReconstructor...: | |
79 | precision fit with multiple Coulomb scattering; | |
80 | extrapolation to vertex with Branson correction in absorber (JPC) | |
81 | ||
04b5ea16 | 82 | Revision 1.3 2000/06/25 13:23:28 hristov |
83 | stdlib.h needed for non-Linux compilation | |
84 | ||
f6e92cf4 | 85 | Revision 1.2 2000/06/15 07:58:48 morsch |
86 | Code from MUON-dev joined | |
87 | ||
a9e2aefa | 88 | Revision 1.1.2.3 2000/06/12 10:11:34 morsch |
89 | Dummy copy constructor and assignment operator added | |
90 | ||
91 | Revision 1.1.2.2 2000/06/09 12:58:05 gosset | |
92 | Removed comment beginnings in Log sections of .cxx files | |
93 | Suppressed most violations of coding rules | |
94 | ||
95 | Revision 1.1.2.1 2000/06/07 14:44:53 gosset | |
96 | Addition of files for track reconstruction in C++ | |
97 | */ | |
98 | ||
3831f268 | 99 | /////////////////////////////////////////////////// |
a9e2aefa | 100 | // |
3831f268 | 101 | // Reconstructed track |
102 | // in | |
103 | // ALICE | |
104 | // dimuon | |
105 | // spectrometer | |
106 | // | |
107 | /////////////////////////////////////////////////// | |
a9e2aefa | 108 | |
70479d0e | 109 | #include <Riostream.h> // for cout |
82a4bc7b | 110 | #include <stdlib.h> // for exit() |
a9e2aefa | 111 | |
112 | #include <TClonesArray.h> | |
04b5ea16 | 113 | #include <TMath.h> |
d0bfce8d | 114 | #include <TMatrixD.h> |
8429a5e4 | 115 | #include <TObjArray.h> |
956019b6 | 116 | #include <TVirtualFitter.h> |
a9e2aefa | 117 | |
118 | #include "AliMUONEventReconstructor.h" | |
119 | #include "AliMUONHitForRec.h" | |
120 | #include "AliMUONSegment.h" | |
3831f268 | 121 | #include "AliMUONTrack.h" |
a9e2aefa | 122 | #include "AliMUONTrackHit.h" |
123 | ||
04b5ea16 | 124 | // Functions to be minimized with Minuit |
a9e2aefa | 125 | void TrackChi2(Int_t &NParam, Double_t *Gradient, Double_t &Chi2, Double_t *Param, Int_t Flag); |
04b5ea16 | 126 | void TrackChi2MCS(Int_t &NParam, Double_t *Gradient, Double_t &Chi2, Double_t *Param, Int_t Flag); |
127 | ||
44f59652 | 128 | void mnvertLocal(Double_t* a, Int_t l, Int_t m, Int_t n, Int_t& ifail); |
129 | ||
04b5ea16 | 130 | Double_t MultipleScatteringAngle2(AliMUONTrackHit *TrackHit); |
a9e2aefa | 131 | |
132 | ClassImp(AliMUONTrack) // Class implementation in ROOT context | |
133 | ||
956019b6 | 134 | TVirtualFitter* AliMUONTrack::fgFitter = NULL; |
135 | ||
a9e2aefa | 136 | //__________________________________________________________________________ |
137 | AliMUONTrack::AliMUONTrack(AliMUONSegment* BegSegment, AliMUONSegment* EndSegment, AliMUONEventReconstructor* EventReconstructor) | |
138 | { | |
139 | // Constructor from two Segment's | |
140 | fEventReconstructor = EventReconstructor; // link back to EventReconstructor | |
8429a5e4 | 141 | // memory allocation for the TObjArray of pointers to reconstructed TrackHit's |
142 | fTrackHitsPtr = new TObjArray(10); | |
a9e2aefa | 143 | fNTrackHits = 0; |
144 | AddSegment(BegSegment); // add hits from BegSegment | |
145 | AddSegment(EndSegment); // add hits from EndSegment | |
146 | fTrackHitsPtr->Sort(); // sort TrackHits according to increasing Z | |
147 | SetTrackParamAtVertex(); // set track parameters at vertex | |
8429a5e4 | 148 | // set fit conditions... |
04b5ea16 | 149 | fFitMCS = 0; |
956019b6 | 150 | fFitNParam = 3; |
151 | fFitStart = 1; | |
8429a5e4 | 152 | fFitFMin = -1.0; |
a9e2aefa | 153 | return; |
154 | } | |
155 | ||
156 | //__________________________________________________________________________ | |
157 | AliMUONTrack::AliMUONTrack(AliMUONSegment* Segment, AliMUONHitForRec* HitForRec, AliMUONEventReconstructor* EventReconstructor) | |
158 | { | |
159 | // Constructor from one Segment and one HitForRec | |
160 | fEventReconstructor = EventReconstructor; // link back to EventReconstructor | |
8429a5e4 | 161 | // memory allocation for the TObjArray of pointers to reconstructed TrackHit's |
162 | fTrackHitsPtr = new TObjArray(10); | |
a9e2aefa | 163 | fNTrackHits = 0; |
164 | AddSegment(Segment); // add hits from Segment | |
165 | AddHitForRec(HitForRec); // add HitForRec | |
166 | fTrackHitsPtr->Sort(); // sort TrackHits according to increasing Z | |
167 | SetTrackParamAtVertex(); // set track parameters at vertex | |
8429a5e4 | 168 | // set fit conditions... |
04b5ea16 | 169 | fFitMCS = 0; |
956019b6 | 170 | fFitNParam = 3; |
171 | fFitStart = 1; | |
8429a5e4 | 172 | fFitFMin = -1.0; |
a9e2aefa | 173 | return; |
174 | } | |
175 | ||
8429a5e4 | 176 | //__________________________________________________________________________ |
177 | AliMUONTrack::~AliMUONTrack() | |
178 | { | |
179 | // Destructor | |
180 | if (fTrackHitsPtr) { | |
181 | delete fTrackHitsPtr; // delete the TObjArray of pointers to TrackHit's | |
182 | fTrackHitsPtr = NULL; | |
183 | } | |
184 | } | |
185 | ||
956019b6 | 186 | //__________________________________________________________________________ |
a9e2aefa | 187 | AliMUONTrack::AliMUONTrack (const AliMUONTrack& MUONTrack) |
188 | { | |
189 | // Dummy copy constructor | |
190 | } | |
191 | ||
956019b6 | 192 | //__________________________________________________________________________ |
a9e2aefa | 193 | AliMUONTrack & AliMUONTrack::operator=(const AliMUONTrack& MUONTrack) |
194 | { | |
195 | // Dummy assignment operator | |
196 | return *this; | |
197 | } | |
198 | ||
8429a5e4 | 199 | //__________________________________________________________________________ |
200 | void AliMUONTrack::Remove() | |
201 | { | |
202 | // Remove current track from array of tracks, | |
203 | // and corresponding track hits from array of track hits. | |
204 | // Compress the TClonesArray it belongs to. | |
205 | AliMUONTrackHit *nextTrackHit; | |
206 | AliMUONEventReconstructor *eventRec = this->fEventReconstructor; | |
207 | TClonesArray *trackHitsPtr = eventRec->GetRecTrackHitsPtr(); | |
208 | // Loop over all track hits of track | |
209 | AliMUONTrackHit *trackHit = (AliMUONTrackHit*) fTrackHitsPtr->First(); | |
210 | while (trackHit) { | |
211 | nextTrackHit = (AliMUONTrackHit*) fTrackHitsPtr->After(trackHit); | |
212 | // Remove TrackHit from event TClonesArray. | |
213 | // Destructor is called, | |
214 | // hence links between HitForRec's and TrackHit's are updated | |
215 | trackHitsPtr->Remove(trackHit); | |
216 | trackHit = nextTrackHit; | |
217 | } | |
218 | // Remove the track from event TClonesArray | |
219 | // Destructor is called, | |
220 | // hence space for TObjArray of pointers to TrackHit's is freed | |
221 | eventRec->GetRecTracksPtr()->Remove(this); | |
222 | // Number of tracks decreased by 1 | |
223 | eventRec->SetNRecTracks(eventRec->GetNRecTracks() - 1); | |
224 | // Compress event TClonesArray of Track's: | |
225 | // this is essential to retrieve the TClonesArray afterwards | |
226 | eventRec->GetRecTracksPtr()->Compress(); | |
227 | // Compress event TClonesArray of TrackHit's: | |
228 | // this is probably also essential to retrieve the TClonesArray afterwards | |
229 | trackHitsPtr->Compress(); | |
230 | } | |
231 | ||
04b5ea16 | 232 | //__________________________________________________________________________ |
233 | void AliMUONTrack::SetFitMCS(Int_t FitMCS) | |
234 | { | |
956019b6 | 235 | // Set multiple Coulomb scattering option for track fit "fFitMCS" |
04b5ea16 | 236 | // from "FitMCS" argument: 0 without, 1 with |
956019b6 | 237 | if ((FitMCS == 0) || (FitMCS == 1)) fFitMCS = FitMCS; |
04b5ea16 | 238 | // better implementation with enum(with, without) ???? |
956019b6 | 239 | else { |
240 | cout << "ERROR in AliMUONTrack::SetFitMCS(FitMCS)" << endl; | |
241 | cout << "FitMCS = " << FitMCS << " is neither 0 nor 1" << endl; | |
242 | exit(0); | |
243 | } | |
244 | return; | |
245 | } | |
246 | ||
247 | //__________________________________________________________________________ | |
248 | void AliMUONTrack::SetFitNParam(Int_t FitNParam) | |
249 | { | |
250 | // Set number of parameters for track fit "fFitNParam" from "FitNParam": | |
251 | // 3 for momentum, 5 for momentum and position | |
252 | if ((FitNParam == 3) || (FitNParam == 5)) fFitNParam = FitNParam; | |
253 | else { | |
254 | cout << "ERROR in AliMUONTrack::SetFitNParam(FitNParam)" << endl; | |
255 | cout << "FitNParam = " << FitNParam << " is neither 3 nor 5" << endl; | |
256 | exit(0); | |
257 | } | |
258 | return; | |
259 | } | |
260 | ||
261 | //__________________________________________________________________________ | |
262 | void AliMUONTrack::SetFitStart(Int_t FitStart) | |
263 | { | |
264 | // Set multiple Coulomb scattering option for track fit "fFitStart" | |
265 | // from "FitStart" argument: 0 without, 1 with | |
266 | if ((FitStart == 0) || (FitStart == 1)) fFitStart = FitStart; | |
267 | // better implementation with enum(vertex, firstHit) ???? | |
268 | else { | |
269 | cout << "ERROR in AliMUONTrack::SetFitStart(FitStart)" << endl; | |
270 | cout << "FitStart = " << FitStart << " is neither 0 nor 1" << endl; | |
271 | exit(0); | |
272 | } | |
04b5ea16 | 273 | return; |
274 | } | |
275 | ||
956019b6 | 276 | //__________________________________________________________________________ |
3831f268 | 277 | AliMUONTrackParam* AliMUONTrack::GetTrackParamAtFirstHit(void) const { |
a9e2aefa | 278 | // Get pointer to TrackParamAtFirstHit |
279 | return ((AliMUONTrackHit*) (fTrackHitsPtr->First()))->GetTrackParam();} | |
a9e2aefa | 280 | |
281 | //__________________________________________________________________________ | |
3831f268 | 282 | void AliMUONTrack::RecursiveDump(void) const |
a9e2aefa | 283 | { |
284 | // Recursive dump of AliMUONTrack, i.e. with dump of TrackHit's and HitForRec's | |
285 | AliMUONTrackHit *trackHit; | |
286 | AliMUONHitForRec *hitForRec; | |
287 | cout << "Recursive dump of Track: " << this << endl; | |
288 | // Track | |
289 | this->Dump(); | |
290 | for (Int_t trackHitIndex = 0; trackHitIndex < fNTrackHits; trackHitIndex++) { | |
291 | trackHit = (AliMUONTrackHit*) ((*fTrackHitsPtr)[trackHitIndex]); | |
292 | // TrackHit | |
293 | cout << "TrackHit: " << trackHit << " (index: " << trackHitIndex << ")" << endl; | |
294 | trackHit->Dump(); | |
295 | hitForRec = trackHit->GetHitForRecPtr(); | |
296 | // HitForRec | |
297 | cout << "HitForRec: " << hitForRec << endl; | |
298 | hitForRec->Dump(); | |
299 | } | |
300 | return; | |
301 | } | |
302 | ||
8429a5e4 | 303 | //__________________________________________________________________________ |
304 | Int_t AliMUONTrack::HitsInCommon(AliMUONTrack* Track) | |
305 | { | |
306 | // Returns the number of hits in common | |
307 | // between the current track ("this") | |
308 | // and the track pointed to by "Track". | |
309 | Int_t hitsInCommon = 0; | |
310 | AliMUONTrackHit *trackHit1, *trackHit2; | |
311 | // Loop over hits of first track | |
312 | trackHit1 = (AliMUONTrackHit*) this->GetTrackHitsPtr()->First(); | |
313 | while (trackHit1) { | |
314 | // Loop over hits of second track | |
315 | trackHit2 = (AliMUONTrackHit*) Track->GetTrackHitsPtr()->First(); | |
316 | while (trackHit2) { | |
317 | // Increment "hitsInCommon" if both TrackHits point to the same HitForRec | |
318 | if ( (trackHit1->GetHitForRecPtr()) == | |
319 | (trackHit2->GetHitForRecPtr()) ) hitsInCommon++; | |
320 | trackHit2 = (AliMUONTrackHit*) Track->GetTrackHitsPtr()->After(trackHit2); | |
321 | } // trackHit2 | |
322 | trackHit1 = (AliMUONTrackHit*) this->GetTrackHitsPtr()->After(trackHit1); | |
323 | } // trackHit1 | |
324 | return hitsInCommon; | |
325 | } | |
326 | ||
a9e2aefa | 327 | //__________________________________________________________________________ |
956019b6 | 328 | void AliMUONTrack::Fit() |
a9e2aefa | 329 | { |
330 | // Fit the current track ("this"), | |
956019b6 | 331 | // with or without multiple Coulomb scattering according to "fFitMCS", |
332 | // with the number of parameters given by "fFitNParam" | |
333 | // (3 if one keeps X and Y fixed in "TrackParam", 5 if one lets them vary), | |
334 | // starting, according to "fFitStart", | |
335 | // with track parameters at vertex or at the first TrackHit. | |
336 | // "fFitMCS", "fFitNParam" and "fFitStart" have to be set before | |
337 | // by calling the corresponding Set methods. | |
a9e2aefa | 338 | Double_t arg[1], benC, errorParam, invBenP, lower, nonBenC, upper, x, y; |
956019b6 | 339 | char parName[50]; |
340 | AliMUONTrackParam *trackParam; | |
341 | // Check if Minuit is initialized... | |
342 | fgFitter = TVirtualFitter::Fitter(this); // add 3 or 5 for the maximum number of parameters ??? | |
343 | fgFitter->Clear(); // necessary ???? probably yes | |
344 | // how to reset the printout number at every fit ???? | |
345 | // is there any risk to leave it like that ???? | |
a9e2aefa | 346 | // how to go faster ???? choice of Minuit parameters like EDM ???? |
04b5ea16 | 347 | // choice of function to be minimized according to fFitMCS |
956019b6 | 348 | if (fFitMCS == 0) fgFitter->SetFCN(TrackChi2); |
349 | else fgFitter->SetFCN(TrackChi2MCS); | |
d0bfce8d | 350 | arg[0] = -1; |
956019b6 | 351 | fgFitter->ExecuteCommand("SET PRINT", arg, 1); // More printing !!!! |
352 | // Parameters according to "fFitStart" | |
353 | // (should be a function to be used at every place where needed ????) | |
354 | if (fFitStart == 0) trackParam = &fTrackParamAtVertex; | |
355 | else trackParam = this->GetTrackParamAtFirstHit(); | |
356 | // set first 3 Minuit parameters | |
04b5ea16 | 357 | // could be tried with no limits for the search (min=max=0) ???? |
956019b6 | 358 | fgFitter->SetParameter(0, "InvBenP", |
359 | trackParam->GetInverseBendingMomentum(), | |
360 | 0.003, -0.4, 0.4); | |
361 | fgFitter->SetParameter(1, "BenS", | |
362 | trackParam->GetBendingSlope(), | |
363 | 0.001, -0.5, 0.5); | |
364 | fgFitter->SetParameter(2, "NonBenS", | |
365 | trackParam->GetNonBendingSlope(), | |
366 | 0.001, -0.5, 0.5); | |
367 | if (fFitNParam == 5) { | |
d0bfce8d | 368 | // set last 2 Minuit parameters |
369 | // mandatory limits in Bending to avoid NaN values of parameters | |
956019b6 | 370 | fgFitter->SetParameter(3, "X", |
371 | trackParam->GetNonBendingCoor(), | |
d0bfce8d | 372 | 0.03, -500.0, 500.0); |
373 | // mandatory limits in non Bending to avoid NaN values of parameters | |
956019b6 | 374 | fgFitter->SetParameter(4, "Y", |
375 | trackParam->GetBendingCoor(), | |
d0bfce8d | 376 | 0.10, -500.0, 500.0); |
a9e2aefa | 377 | } |
378 | // search without gradient calculation in the function | |
956019b6 | 379 | fgFitter->ExecuteCommand("SET NOGRADIENT", arg, 0); |
a9e2aefa | 380 | // minimization |
956019b6 | 381 | fgFitter->ExecuteCommand("MINIMIZE", arg, 0); |
a9e2aefa | 382 | // exit from Minuit |
956019b6 | 383 | fgFitter->ExecuteCommand("EXIT", arg, 0); // necessary ???? |
384 | // get results into "invBenP", "benC", "nonBenC" ("x", "y") | |
385 | fgFitter->GetParameter(0, parName, invBenP, errorParam, lower, upper); | |
386 | fgFitter->GetParameter(1, parName, benC, errorParam, lower, upper); | |
387 | fgFitter->GetParameter(2, parName, nonBenC, errorParam, lower, upper); | |
388 | if (fFitNParam == 5) { | |
389 | fgFitter->GetParameter(3, parName, x, errorParam, lower, upper); | |
390 | fgFitter->GetParameter(4, parName, y, errorParam, lower, upper); | |
a9e2aefa | 391 | } |
392 | // result of the fit into track parameters | |
956019b6 | 393 | trackParam->SetInverseBendingMomentum(invBenP); |
394 | trackParam->SetBendingSlope(benC); | |
395 | trackParam->SetNonBendingSlope(nonBenC); | |
396 | if (fFitNParam == 5) { | |
397 | trackParam->SetNonBendingCoor(x); | |
398 | trackParam->SetBendingCoor(y); | |
a9e2aefa | 399 | } |
8429a5e4 | 400 | // global result of the fit |
401 | Double_t fedm, errdef; | |
402 | Int_t npari, nparx; | |
403 | fgFitter->GetStats(fFitFMin, fedm, errdef, npari, nparx); | |
a9e2aefa | 404 | } |
405 | ||
406 | //__________________________________________________________________________ | |
407 | void AliMUONTrack::AddSegment(AliMUONSegment* Segment) | |
408 | { | |
8429a5e4 | 409 | // Add Segment to the track |
a9e2aefa | 410 | AddHitForRec(Segment->GetHitForRec1()); // 1st hit |
411 | AddHitForRec(Segment->GetHitForRec2()); // 2nd hit | |
412 | } | |
413 | ||
414 | //__________________________________________________________________________ | |
415 | void AliMUONTrack::AddHitForRec(AliMUONHitForRec* HitForRec) | |
416 | { | |
8429a5e4 | 417 | // Add HitForRec to the track: |
418 | // actual TrackHit into TClonesArray of TrackHit's for the event; | |
419 | // pointer to actual TrackHit in TObjArray of pointers to TrackHit's for the track | |
420 | TClonesArray *recTrackHitsPtr = this->fEventReconstructor->GetRecTrackHitsPtr(); | |
421 | Int_t eventTrackHits = this->fEventReconstructor->GetNRecTrackHits(); | |
422 | // event | |
423 | AliMUONTrackHit* trackHit = | |
424 | new ((*recTrackHitsPtr)[eventTrackHits]) AliMUONTrackHit(HitForRec); | |
425 | this->fEventReconstructor->SetNRecTrackHits(eventTrackHits + 1); | |
426 | // track | |
427 | fTrackHitsPtr->Add(trackHit); | |
a9e2aefa | 428 | fNTrackHits++; |
429 | } | |
430 | ||
431 | //__________________________________________________________________________ | |
3831f268 | 432 | void AliMUONTrack::SetTrackParamAtHit(Int_t indexHit, AliMUONTrackParam *TrackParam) const |
a9e2aefa | 433 | { |
434 | // Set track parameters at TrackHit with index "indexHit" | |
435 | // from the track parameters pointed to by "TrackParam". | |
2682e810 | 436 | //PH AliMUONTrackHit* trackHit = (AliMUONTrackHit*) ((*fTrackHitsPtr)[indexHit]); |
437 | AliMUONTrackHit* trackHit = (AliMUONTrackHit*) (fTrackHitsPtr->At(indexHit)); | |
a9e2aefa | 438 | trackHit->SetTrackParam(TrackParam); |
439 | } | |
440 | ||
441 | //__________________________________________________________________________ | |
442 | void AliMUONTrack::SetTrackParamAtVertex() | |
443 | { | |
444 | // Set track parameters at vertex. | |
445 | // TrackHit's are assumed to be only in stations(1..) 4 and 5, | |
446 | // and sorted according to increasing Z.. | |
447 | // Parameters are calculated from information in HitForRec's | |
448 | // of first and last TrackHit's. | |
449 | AliMUONTrackParam *trackParam = | |
450 | &fTrackParamAtVertex; // pointer to track parameters | |
451 | // Pointer to HitForRec of first TrackHit | |
452 | AliMUONHitForRec *firstHit = | |
453 | ((AliMUONTrackHit*) (fTrackHitsPtr->First()))->GetHitForRecPtr(); | |
454 | // Pointer to HitForRec of last TrackHit | |
455 | AliMUONHitForRec *lastHit = | |
456 | ((AliMUONTrackHit*) (fTrackHitsPtr->Last()))->GetHitForRecPtr(); | |
457 | // Z difference between first and last hits | |
458 | Double_t deltaZ = firstHit->GetZ() - lastHit->GetZ(); | |
459 | // bending slope in stations(1..) 4 and 5 | |
460 | Double_t bendingSlope = | |
461 | (firstHit->GetBendingCoor() - lastHit->GetBendingCoor()) / deltaZ; | |
462 | trackParam->SetBendingSlope(bendingSlope); | |
463 | // impact parameter | |
464 | Double_t impactParam = | |
465 | firstHit->GetBendingCoor() - bendingSlope * firstHit->GetZ(); // same if from firstHit and lastHit ???? | |
466 | // signed bending momentum | |
467 | Double_t signedBendingMomentum = | |
468 | fEventReconstructor->GetBendingMomentumFromImpactParam(impactParam); | |
469 | trackParam->SetInverseBendingMomentum(1.0 / signedBendingMomentum); | |
470 | // bending slope at vertex | |
471 | trackParam-> | |
472 | SetBendingSlope(bendingSlope + | |
473 | impactParam / fEventReconstructor->GetSimpleBPosition()); | |
474 | // non bending slope | |
475 | Double_t nonBendingSlope = | |
476 | (firstHit->GetNonBendingCoor() - lastHit->GetNonBendingCoor()) / deltaZ; | |
477 | trackParam->SetNonBendingSlope(nonBendingSlope); | |
478 | // vertex coordinates at (0,0,0) | |
479 | trackParam->SetZ(0.0); | |
480 | trackParam->SetBendingCoor(0.0); | |
481 | trackParam->SetNonBendingCoor(0.0); | |
482 | } | |
483 | ||
484 | //__________________________________________________________________________ | |
485 | void TrackChi2(Int_t &NParam, Double_t *Gradient, Double_t &Chi2, Double_t *Param, Int_t Flag) | |
486 | { | |
487 | // Return the "Chi2" to be minimized with Minuit for track fitting, | |
488 | // with "NParam" parameters | |
489 | // and their current values in array pointed to by "Param". | |
490 | // Assumes that the track hits are sorted according to increasing Z. | |
491 | // Track parameters at each TrackHit are updated accordingly. | |
04b5ea16 | 492 | // Multiple Coulomb scattering is not taken into account |
956019b6 | 493 | AliMUONTrack *trackBeingFitted; |
a9e2aefa | 494 | AliMUONTrackHit* hit; |
495 | AliMUONTrackParam param1; | |
496 | Int_t hitNumber; | |
497 | Double_t zHit; | |
498 | Chi2 = 0.0; // initialize Chi2 | |
499 | // copy of track parameters to be fitted | |
956019b6 | 500 | trackBeingFitted = (AliMUONTrack*) AliMUONTrack::Fitter()->GetObjectFit(); |
501 | if (trackBeingFitted->GetFitStart() == 0) | |
502 | param1 = *(trackBeingFitted->GetTrackParamAtVertex()); | |
503 | else param1 = *(trackBeingFitted->GetTrackParamAtFirstHit()); | |
a9e2aefa | 504 | // Minuit parameters to be fitted into this copy |
505 | param1.SetInverseBendingMomentum(Param[0]); | |
506 | param1.SetBendingSlope(Param[1]); | |
507 | param1.SetNonBendingSlope(Param[2]); | |
508 | if (NParam == 5) { | |
509 | param1.SetNonBendingCoor(Param[3]); | |
510 | param1.SetBendingCoor(Param[4]); | |
511 | } | |
512 | // Follow track through all planes of track hits | |
513 | for (hitNumber = 0; hitNumber < trackBeingFitted->GetNTrackHits(); hitNumber++) { | |
514 | hit = (AliMUONTrackHit*) (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber]; | |
515 | zHit = hit->GetHitForRecPtr()->GetZ(); | |
516 | // do something special if 2 hits with same Z ???? | |
517 | // security against infinite loop ???? | |
518 | (¶m1)->ExtrapToZ(zHit); // extrapolation | |
519 | hit->SetTrackParam(¶m1); | |
520 | // Increment Chi2 | |
521 | // done hit per hit, with hit resolution, | |
522 | // and not with point and angle like in "reco_muon.F" !!!! | |
523 | // Needs to add multiple scattering contribution ???? | |
524 | Double_t dX = | |
525 | hit->GetHitForRecPtr()->GetNonBendingCoor() - (¶m1)->GetNonBendingCoor(); | |
526 | Double_t dY = | |
527 | hit->GetHitForRecPtr()->GetBendingCoor() - (¶m1)->GetBendingCoor(); | |
528 | Chi2 = | |
529 | Chi2 + | |
530 | dX * dX / hit->GetHitForRecPtr()->GetNonBendingReso2() + | |
531 | dY * dY / hit->GetHitForRecPtr()->GetBendingReso2(); | |
532 | } | |
533 | } | |
04b5ea16 | 534 | |
535 | //__________________________________________________________________________ | |
536 | void TrackChi2MCS(Int_t &NParam, Double_t *Gradient, Double_t &Chi2, Double_t *Param, Int_t Flag) | |
537 | { | |
538 | // Return the "Chi2" to be minimized with Minuit for track fitting, | |
539 | // with "NParam" parameters | |
540 | // and their current values in array pointed to by "Param". | |
541 | // Assumes that the track hits are sorted according to increasing Z. | |
542 | // Track parameters at each TrackHit are updated accordingly. | |
543 | // Multiple Coulomb scattering is taken into account with covariance matrix. | |
956019b6 | 544 | AliMUONTrack *trackBeingFitted; |
04b5ea16 | 545 | AliMUONTrackParam param1; |
546 | Chi2 = 0.0; // initialize Chi2 | |
547 | // copy of track parameters to be fitted | |
956019b6 | 548 | trackBeingFitted = (AliMUONTrack*) AliMUONTrack::Fitter()->GetObjectFit(); |
549 | if (trackBeingFitted->GetFitStart() == 0) | |
550 | param1 = *(trackBeingFitted->GetTrackParamAtVertex()); | |
551 | else param1 = *(trackBeingFitted->GetTrackParamAtFirstHit()); | |
04b5ea16 | 552 | // Minuit parameters to be fitted into this copy |
553 | param1.SetInverseBendingMomentum(Param[0]); | |
554 | param1.SetBendingSlope(Param[1]); | |
555 | param1.SetNonBendingSlope(Param[2]); | |
556 | if (NParam == 5) { | |
557 | param1.SetNonBendingCoor(Param[3]); | |
558 | param1.SetBendingCoor(Param[4]); | |
559 | } | |
560 | ||
956019b6 | 561 | AliMUONTrackHit *hit; |
bbe35c23 | 562 | Int_t chCurrent, chPrev = 0, hitNumber, hitNumber1, hitNumber2, hitNumber3; |
eb9c9dab | 563 | Double_t z, z1, z2, z3; |
564 | AliMUONTrackHit *hit1, *hit2, *hit3; | |
565 | Double_t hbc1, hbc2, pbc1, pbc2; | |
566 | Double_t hnbc1, hnbc2, pnbc1, pnbc2; | |
567 | Int_t numberOfHit = trackBeingFitted->GetNTrackHits(); | |
d0bfce8d | 568 | TMatrixD *covBending = new TMatrixD(numberOfHit, numberOfHit); |
569 | TMatrixD *covNonBending = new TMatrixD(numberOfHit, numberOfHit); | |
eb9c9dab | 570 | Double_t *msa2 = new Double_t[numberOfHit]; |
04b5ea16 | 571 | |
572 | // Predicted coordinates and multiple scattering angles are first calculated | |
573 | for (hitNumber = 0; hitNumber < numberOfHit; hitNumber++) { | |
574 | hit = (AliMUONTrackHit*) (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber]; | |
eb9c9dab | 575 | z = hit->GetHitForRecPtr()->GetZ(); |
04b5ea16 | 576 | // do something special if 2 hits with same Z ???? |
577 | // security against infinite loop ???? | |
eb9c9dab | 578 | (¶m1)->ExtrapToZ(z); // extrapolation |
04b5ea16 | 579 | hit->SetTrackParam(¶m1); |
eb9c9dab | 580 | // square of multiple scattering angle at current hit, with one chamber |
581 | msa2[hitNumber] = MultipleScatteringAngle2(hit); | |
582 | // correction for eventual missing hits or multiple hits in a chamber, | |
583 | // according to the number of chambers | |
584 | // between the current hit and the previous one | |
585 | chCurrent = hit->GetHitForRecPtr()->GetChamberNumber(); | |
586 | if (hitNumber > 0) msa2[hitNumber] = msa2[hitNumber] * (chCurrent - chPrev); | |
587 | chPrev = chCurrent; | |
04b5ea16 | 588 | } |
589 | ||
590 | // Calculates the covariance matrix | |
eb9c9dab | 591 | for (hitNumber1 = 0; hitNumber1 < numberOfHit; hitNumber1++) { |
592 | hit1 = (AliMUONTrackHit*) (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber1]; | |
593 | z1 = hit1->GetHitForRecPtr()->GetZ(); | |
04b5ea16 | 594 | for (hitNumber2 = hitNumber1; hitNumber2 < numberOfHit; hitNumber2++) { |
eb9c9dab | 595 | hit2 = (AliMUONTrackHit*) (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber2]; |
596 | z2 = hit2->GetHitForRecPtr()->GetZ(); | |
956019b6 | 597 | // initialization to 0 (diagonal plus upper triangular part) |
598 | (*covBending)(hitNumber2, hitNumber1) = 0.0; | |
599 | // contribution from multiple scattering in bending plane: | |
600 | // loop over upstream hits | |
601 | for (hitNumber3 = 0; hitNumber3 < hitNumber1; hitNumber3++) { | |
eb9c9dab | 602 | hit3 = (AliMUONTrackHit*) |
603 | (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber3]; | |
604 | z3 = hit3->GetHitForRecPtr()->GetZ(); | |
04b5ea16 | 605 | (*covBending)(hitNumber2, hitNumber1) = |
606 | (*covBending)(hitNumber2, hitNumber1) + | |
eb9c9dab | 607 | ((z1 - z3) * (z2 - z3) * msa2[hitNumber3]); |
956019b6 | 608 | } |
609 | // equal contribution from multiple scattering in non bending plane | |
04b5ea16 | 610 | (*covNonBending)(hitNumber2, hitNumber1) = |
611 | (*covBending)(hitNumber2, hitNumber1); | |
956019b6 | 612 | if (hitNumber1 == hitNumber2) { |
613 | // Diagonal elements: add contribution from position measurements | |
614 | // in bending plane | |
615 | (*covBending)(hitNumber2, hitNumber1) = | |
eb9c9dab | 616 | (*covBending)(hitNumber2, hitNumber1) + |
617 | hit1->GetHitForRecPtr()->GetBendingReso2(); | |
956019b6 | 618 | // and in non bending plane |
04b5ea16 | 619 | (*covNonBending)(hitNumber2, hitNumber1) = |
eb9c9dab | 620 | (*covNonBending)(hitNumber2, hitNumber1) + |
621 | hit1->GetHitForRecPtr()->GetNonBendingReso2(); | |
956019b6 | 622 | } |
623 | else { | |
624 | // Non diagonal elements: symmetrization | |
625 | // for bending plane | |
626 | (*covBending)(hitNumber1, hitNumber2) = | |
627 | (*covBending)(hitNumber2, hitNumber1); | |
628 | // and non bending plane | |
629 | (*covNonBending)(hitNumber1, hitNumber2) = | |
630 | (*covNonBending)(hitNumber2, hitNumber1); | |
631 | } | |
632 | } // for (hitNumber2 = hitNumber1;... | |
633 | } // for (hitNumber1 = 0;... | |
d0bfce8d | 634 | |
44f59652 | 635 | // Inversion of covariance matrices |
636 | // with "mnvertLocal", local "mnvert" function of Minuit. | |
637 | // One cannot use directly "mnvert" since "TVirtualFitter" does not know it. | |
638 | // One will have to replace this local function by the right inversion function | |
639 | // from a specialized Root package for symmetric positive definite matrices, | |
640 | // when available!!!! | |
641 | Int_t ifailBending; | |
642 | mnvertLocal(&((*covBending)(0,0)), numberOfHit, numberOfHit, numberOfHit, | |
643 | ifailBending); | |
644 | Int_t ifailNonBending; | |
645 | mnvertLocal(&((*covNonBending)(0,0)), numberOfHit, numberOfHit, numberOfHit, | |
646 | ifailNonBending); | |
956019b6 | 647 | |
648 | // It would be worth trying to calculate the inverse of the covariance matrix | |
649 | // only once per fit, since it cannot change much in principle, | |
650 | // and it would save a lot of computing time !!!! | |
04b5ea16 | 651 | |
652 | // Calculates Chi2 | |
44f59652 | 653 | if ((ifailBending == 0) && (ifailNonBending == 0)) { |
eb9c9dab | 654 | // with Multiple Scattering if inversion correct |
655 | for (hitNumber1 = 0; hitNumber1 < numberOfHit ; hitNumber1++) { | |
656 | hit1 = (AliMUONTrackHit*) (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber1]; | |
657 | hbc1 = hit1->GetHitForRecPtr()->GetBendingCoor(); | |
658 | pbc1 = hit1->GetTrackParam()->GetBendingCoor(); | |
659 | hnbc1 = hit1->GetHitForRecPtr()->GetNonBendingCoor(); | |
660 | pnbc1 = hit1->GetTrackParam()->GetNonBendingCoor(); | |
661 | for (hitNumber2 = 0; hitNumber2 < numberOfHit; hitNumber2++) { | |
662 | hit2 = (AliMUONTrackHit*) | |
663 | (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber2]; | |
664 | hbc2 = hit2->GetHitForRecPtr()->GetBendingCoor(); | |
665 | pbc2 = hit2->GetTrackParam()->GetBendingCoor(); | |
666 | hnbc2 = hit2->GetHitForRecPtr()->GetNonBendingCoor(); | |
667 | pnbc2 = hit2->GetTrackParam()->GetNonBendingCoor(); | |
04b5ea16 | 668 | Chi2 = Chi2 + |
eb9c9dab | 669 | ((*covBending)(hitNumber2, hitNumber1) * |
670 | (hbc1 - pbc1) * (hbc2 - pbc2)) + | |
04b5ea16 | 671 | ((*covNonBending)(hitNumber2, hitNumber1) * |
eb9c9dab | 672 | (hnbc1 - pnbc1) * (hnbc2 - pnbc2)); |
04b5ea16 | 673 | } |
674 | } | |
eb9c9dab | 675 | } else { |
676 | // without Multiple Scattering if inversion impossible | |
677 | for (hitNumber1 = 0; hitNumber1 < numberOfHit ; hitNumber1++) { | |
678 | hit1 = (AliMUONTrackHit*) (*(trackBeingFitted->GetTrackHitsPtr()))[hitNumber1]; | |
679 | hbc1 = hit1->GetHitForRecPtr()->GetBendingCoor(); | |
680 | pbc1 = hit1->GetTrackParam()->GetBendingCoor(); | |
681 | hnbc1 = hit1->GetHitForRecPtr()->GetNonBendingCoor(); | |
682 | pnbc1 = hit1->GetTrackParam()->GetNonBendingCoor(); | |
683 | Chi2 = Chi2 + | |
684 | ((hbc1 - pbc1) * (hbc1 - pbc1) / | |
685 | hit1->GetHitForRecPtr()->GetBendingReso2()) + | |
686 | ((hnbc1 - pnbc1) * (hnbc1 - pnbc1) / | |
687 | hit1->GetHitForRecPtr()->GetNonBendingReso2()); | |
04b5ea16 | 688 | } |
689 | } | |
690 | ||
691 | delete covBending; | |
692 | delete covNonBending; | |
eb9c9dab | 693 | delete [] msa2; |
04b5ea16 | 694 | } |
695 | ||
696 | Double_t MultipleScatteringAngle2(AliMUONTrackHit *TrackHit) | |
697 | { | |
698 | // Returns square of multiple Coulomb scattering angle | |
699 | // at TrackHit pointed to by "TrackHit" | |
700 | Double_t slopeBending, slopeNonBending, radiationLength, inverseBendingMomentum2, inverseTotalMomentum2; | |
701 | Double_t varMultipleScatteringAngle; | |
956019b6 | 702 | AliMUONTrack *trackBeingFitted = (AliMUONTrack*) AliMUONTrack::Fitter()->GetObjectFit(); |
04b5ea16 | 703 | AliMUONTrackParam *param = TrackHit->GetTrackParam(); |
956019b6 | 704 | // Better implementation in AliMUONTrack class ???? |
04b5ea16 | 705 | slopeBending = param->GetBendingSlope(); |
706 | slopeNonBending = param->GetNonBendingSlope(); | |
707 | // thickness in radiation length for the current track, | |
708 | // taking local angle into account | |
709 | radiationLength = | |
710 | trackBeingFitted->GetEventReconstructor()->GetChamberThicknessInX0() * | |
711 | TMath::Sqrt(1.0 + | |
712 | slopeBending * slopeBending + slopeNonBending * slopeNonBending); | |
713 | inverseBendingMomentum2 = | |
714 | param->GetInverseBendingMomentum() * param->GetInverseBendingMomentum(); | |
715 | inverseTotalMomentum2 = | |
956019b6 | 716 | inverseBendingMomentum2 * (1.0 + slopeBending * slopeBending) / |
04b5ea16 | 717 | (1.0 + slopeBending *slopeBending + slopeNonBending * slopeNonBending); |
718 | varMultipleScatteringAngle = 0.0136 * (1.0 + 0.038 * TMath::Log(radiationLength)); | |
956019b6 | 719 | // The velocity is assumed to be 1 !!!! |
04b5ea16 | 720 | varMultipleScatteringAngle = inverseTotalMomentum2 * radiationLength * |
721 | varMultipleScatteringAngle * varMultipleScatteringAngle; | |
722 | return varMultipleScatteringAngle; | |
723 | } | |
44f59652 | 724 | |
725 | //______________________________________________________________________________ | |
726 | void mnvertLocal(Double_t *a, Int_t l, Int_t, Int_t n, Int_t &ifail) | |
727 | { | |
728 | //*-*-*-*-*-*-*-*-*-*-*-*Inverts a symmetric matrix*-*-*-*-*-*-*-*-*-*-*-*-* | |
729 | //*-* ========================== | |
730 | //*-* inverts a symmetric matrix. matrix is first scaled to | |
731 | //*-* have all ones on the diagonal (equivalent to change of units) | |
732 | //*-* but no pivoting is done since matrix is positive-definite. | |
733 | //*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* | |
734 | ||
735 | // taken from TMinuit package of Root (l>=n) | |
736 | // fVERTs, fVERTq and fVERTpp changed to localVERTs, localVERTq and localVERTpp | |
e804eb46 | 737 | // Double_t localVERTs[n], localVERTq[n], localVERTpp[n]; |
738 | Double_t * localVERTs = new Double_t[n]; | |
739 | Double_t * localVERTq = new Double_t[n]; | |
740 | Double_t * localVERTpp = new Double_t[n]; | |
44f59652 | 741 | // fMaxint changed to localMaxint |
742 | Int_t localMaxint = n; | |
743 | ||
744 | /* System generated locals */ | |
3831f268 | 745 | Int_t aOffset; |
44f59652 | 746 | |
747 | /* Local variables */ | |
748 | Double_t si; | |
749 | Int_t i, j, k, kp1, km1; | |
750 | ||
751 | /* Parameter adjustments */ | |
3831f268 | 752 | aOffset = l + 1; |
753 | a -= aOffset; | |
44f59652 | 754 | |
755 | /* Function Body */ | |
756 | ifail = 0; | |
757 | if (n < 1) goto L100; | |
758 | if (n > localMaxint) goto L100; | |
759 | //*-*- scale matrix by sqrt of diag elements | |
760 | for (i = 1; i <= n; ++i) { | |
761 | si = a[i + i*l]; | |
762 | if (si <= 0) goto L100; | |
763 | localVERTs[i-1] = 1 / TMath::Sqrt(si); | |
764 | } | |
765 | for (i = 1; i <= n; ++i) { | |
766 | for (j = 1; j <= n; ++j) { | |
767 | a[i + j*l] = a[i + j*l]*localVERTs[i-1]*localVERTs[j-1]; | |
768 | } | |
769 | } | |
770 | //*-*- . . . start main loop . . . . | |
771 | for (i = 1; i <= n; ++i) { | |
772 | k = i; | |
773 | //*-*- preparation for elimination step1 | |
774 | if (a[k + k*l] != 0) localVERTq[k-1] = 1 / a[k + k*l]; | |
775 | else goto L100; | |
776 | localVERTpp[k-1] = 1; | |
777 | a[k + k*l] = 0; | |
778 | kp1 = k + 1; | |
779 | km1 = k - 1; | |
780 | if (km1 < 0) goto L100; | |
781 | else if (km1 == 0) goto L50; | |
782 | else goto L40; | |
783 | L40: | |
784 | for (j = 1; j <= km1; ++j) { | |
785 | localVERTpp[j-1] = a[j + k*l]; | |
786 | localVERTq[j-1] = a[j + k*l]*localVERTq[k-1]; | |
787 | a[j + k*l] = 0; | |
788 | } | |
789 | L50: | |
790 | if (k - n < 0) goto L51; | |
791 | else if (k - n == 0) goto L60; | |
792 | else goto L100; | |
793 | L51: | |
794 | for (j = kp1; j <= n; ++j) { | |
795 | localVERTpp[j-1] = a[k + j*l]; | |
796 | localVERTq[j-1] = -a[k + j*l]*localVERTq[k-1]; | |
797 | a[k + j*l] = 0; | |
798 | } | |
799 | //*-*- elimination proper | |
800 | L60: | |
801 | for (j = 1; j <= n; ++j) { | |
802 | for (k = j; k <= n; ++k) { a[j + k*l] += localVERTpp[j-1]*localVERTq[k-1]; } | |
803 | } | |
804 | } | |
805 | //*-*- elements of left diagonal and unscaling | |
806 | for (j = 1; j <= n; ++j) { | |
807 | for (k = 1; k <= j; ++k) { | |
808 | a[k + j*l] = a[k + j*l]*localVERTs[k-1]*localVERTs[j-1]; | |
809 | a[j + k*l] = a[k + j*l]; | |
810 | } | |
811 | } | |
e804eb46 | 812 | delete localVERTs; |
813 | delete localVERTq; | |
814 | delete localVERTpp; | |
44f59652 | 815 | return; |
816 | //*-*- failure return | |
817 | L100: | |
e804eb46 | 818 | delete localVERTs; |
819 | delete localVERTq; | |
820 | delete localVERTpp; | |
44f59652 | 821 | ifail = 1; |
822 | } /* mnvertLocal */ | |
823 |