Removing useless flag.
[u/mrichter/AliRoot.git] / TRD / AliTRDseedV1.h
CommitLineData
e4f2f73d 1#ifndef ALITRDSEEDV1_H
2#define ALITRDSEEDV1_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
e44586fb 4* See cxx source for full Copyright notice */
e4f2f73d 5
829e9a79 6/* $Id: AliTRDseedV1.h 60233 2013-01-10 09:04:08Z abercuci $ */
e4f2f73d 7
8////////////////////////////////////////////////////////////////////////////
9// //
ee8fb199 10// \class AliTRDseedV1
11// \brief The TRD offline tracklet
12// \author Alexandru Bercuci
e4f2f73d 13// //
14////////////////////////////////////////////////////////////////////////////
15
3e778975 16#ifndef ALITRDTRACKLETBASE_H
17#include "AliTRDtrackletBase.h"
e3cf3d02 18#endif
19
20#ifndef ROOT_TMath
21#include "TMath.h"
e4f2f73d 22#endif
23
ae4e8b84 24#ifndef ALITRDGEOMETRY_H
25#include "AliTRDgeometry.h"
26#endif
27
0906e73e 28#ifndef ALIPID_H
29#include "AliPID.h"
30#endif
31
e4f2f73d 32
f29f13a6 33#ifndef ALITRDCLUSTER_H
34#include "AliTRDcluster.h"
35#endif
36
d07eec70 37
e4f2f73d 38class TTreeSRedirector;
f301a656 39class TLinearFitter;
829e9a79 40class TGeoHMatrix;
e4f2f73d 41class AliRieman;
42
4ecadb52 43class AliTRDReconstructor;
eb38ed55 44class AliTRDtrackingChamber;
f3d3af1b 45class AliTRDtrackV1;
eb2b4f91 46class AliTRDpadPlane;
3e778975 47class AliTRDseedV1 : public AliTRDtrackletBase
48{
4ecadb52 49 friend class AliHLTTRDTracklet; // wrapper for HLT
3044dfe5 50
e3cf3d02 51public:
52 enum ETRDtrackletBuffers {
980d5a2a 53 kNbits = 6 // bits to store number of clusters
54 ,kMask = 0x3f // bit mask
55 ,kNtb = 31 // max clusters/pad row
8d2bec9e 56 ,kNclusters = 2*kNtb // max number of clusters/tracklet
1f97f376 57 ,kNdEdxSlices= 8 // dEdx slices allocated in reconstruction
e44586fb 58 };
e3cf3d02 59
2e2915e7 60 // bits from 0-13 are reserved by ROOT (see TObject.h)
e3cf3d02 61 enum ETRDtrackletStatus {
f29f13a6 62 kOwner = BIT(14) // owner of its clusters
63 ,kRowCross = BIT(15) // pad row cross tracklet
1f97f376 64 ,kChmbGood = BIT(16) // status of the detector from calibration view point
e20bef2b 65 ,kCalib = BIT(17) // calibrated tracklet
66 ,kKink = BIT(18) // kink prolongation tracklet
1fd9389f 67 ,kStandAlone = BIT(19) // tracklet build during stand alone track finding
2eb10c34 68 ,kPrimary = BIT(20) // tracklet from a primary track candidate
e44586fb 69 };
2eb10c34 70
71 enum ETRDtrackletError { // up to 8 bits
72 kAttachClFound = 0 // not enough clusters found
73 ,kAttachRowGap = 1 // found gap attached rows
74 ,kAttachRow = 2 // found 3 rows
75 ,kAttachMultipleCl= 3// multiple clusters attached to time bin
76 ,kAttachClAttach= 4 // not enough clusters attached
77 ,kFitCl = 5 // not enough clusters for fit
78 ,kFitFailedY = 6 // fit failed in XY plane failed
79 ,kFitFailedZ = 7 // fit in the QZ plane failed
7c3eecb8 80 };
e44586fb 81
ae4e8b84 82 AliTRDseedV1(Int_t det = -1);
e44586fb 83 ~AliTRDseedV1();
84 AliTRDseedV1(const AliTRDseedV1 &ref);
85 AliTRDseedV1& operator=(const AliTRDseedV1 &ref);
ddfbc51a 86
9dcc64cc 87 Bool_t AttachClusters(AliTRDtrackingChamber *const chamber, Bool_t tilt = kFALSE, Bool_t ChgPlus=kTRUE, Int_t ev=-1);
203967fc 88 void Bootstrap(const AliTRDReconstructor *rec);
e3cf3d02 89 void Calibrate();
203967fc 90 void CookdEdx(Int_t nslices);
e3cf3d02 91 void CookLabels();
3e778975 92 Bool_t CookPID();
829e9a79 93 Bool_t Fit(UChar_t opt=0); // OBSOLETE
cb29fcbf 94 Bool_t FitRobust(AliTRDpadPlane *pp, TGeoHMatrix *mdet, Float_t bz, Int_t chg, Int_t opt=0);
95 Double_t EstimatedCrossPoint(AliTRDpadPlane *pp, Float_t bz);
33ab3872 96 Bool_t Init(const AliTRDtrackV1 *track);
4ecadb52 97 void Init(const AliRieman *fit);
203967fc 98 Bool_t IsEqual(const TObject *inTracklet) const;
e3cf3d02 99 Bool_t IsCalibrated() const { return TestBit(kCalib);}
803dc399 100 Bool_t IsChmbGood() const { return TestBit(kChmbGood);}
e44586fb 101 Bool_t IsOwner() const { return TestBit(kOwner);}
f29f13a6 102 Bool_t IsKink() const { return TestBit(kKink);}
2eb10c34 103 Bool_t IsPrimary() const { return TestBit(kPrimary);}
2eb10c34 104 Bool_t HasError(ETRDtrackletError err) const
105 { return TESTBIT(fErrorMsg, err);}
3e778975 106 Bool_t IsOK() const { return GetN() > 4 && GetNUsed() < 4;}
e44586fb 107 Bool_t IsRowCross() const { return TestBit(kRowCross);}
f29f13a6 108 Bool_t IsUsable(Int_t i) const { return fClusters[i] && !fClusters[i]->IsUsed();}
109 Bool_t IsStandAlone() const { return TestBit(kStandAlone);}
e44586fb 110
2eb10c34 111 Float_t GetAnodeWireOffset(Float_t zt);
68f9b6bd 112 Float_t GetC(Int_t typ=0) const { return fC[typ]; }
9dcc64cc 113 Float_t GetCharge(Bool_t useOutliers=kFALSE) const;
e3cf3d02 114 Float_t GetChi2() const { return fChi2; }
115 inline Float_t GetChi2Z() const;
116 inline Float_t GetChi2Y() const;
f29f13a6 117 inline Float_t GetChi2Phi() const;
e44586fb 118 void GetCovAt(Double_t x, Double_t *cov) const;
d937ad7a 119 void GetCovXY(Double_t *cov) const { memcpy(cov, &fCov[0], 3*sizeof(Double_t));}
16cca13f 120 void GetCovRef(Double_t *cov) const { memcpy(cov, &fRefCov, 7*sizeof(Double_t));}
66765e8e 121 static Int_t GetCovSqrt(const Double_t * const c, Double_t *d);
4d6aee34 122 static Double_t GetCovInv(const Double_t * const c, Double_t *d);
7c3eecb8 123 UChar_t GetErrorMsg() const { return fErrorMsg;}
203967fc 124 Float_t GetdX() const { return fdX;}
4d6aee34 125 const Float_t* GetdEdx() const { return &fdEdx[0];}
a0bb5615 126 Float_t GetQperTB(Int_t tb) const;
9dcc64cc 127 Float_t GetdQdl() const;
4d6aee34 128 Float_t GetdQdl(Int_t ic, Float_t *dx=NULL) const;
2eb10c34 129 Float_t GetdYdX() const { return fYfit[1];}
130 Float_t GetdZdX() const { return fZfit[1];}
3e778975 131 Int_t GetdY() const { return Int_t(GetY()/0.014);}
203967fc 132 Int_t GetDetector() const { return fDet;}
15a4c6d0 133 Int_t GetChargeGaps(Float_t sz[kNtb], Float_t pos[kNtb], Int_t ntb[kNtb]) const;
e3cf3d02 134 void GetCalibParam(Float_t &exb, Float_t &vd, Float_t &t0, Float_t &s2, Float_t &dl, Float_t &dt) const {
135 exb = fExB; vd = fVD; t0 = fT0; s2 = fS2PRF; dl = fDiffL; dt = fDiffT;}
4d6aee34 136 AliTRDcluster* GetClusters(Int_t i) const { return i<0 || i>=kNclusters ? NULL: fClusters[i];}
8d2bec9e 137 Int_t GetIndexes(Int_t i) const{ return i<0 || i>=kNclusters ? -1 : fIndexes[i];}
e3cf3d02 138 Int_t GetLabels(Int_t i) const { return fLabels[i];}
829e9a79 139 Float_t GetLocalZ() const { return fZfit[0] - fZfit[1] * fX;}
140 Float_t GetLocalY() const { return fYfit[0] - fYfit[1] * fX;}
4d6aee34 141 Float_t GetMomentum(Float_t *err = NULL) const;
980d5a2a 142 Int_t GetN() const { return (Int_t)fN&kMask;}
3e778975 143 Int_t GetN2() const { return GetN();}
980d5a2a 144 Int_t GetNUsed() const { return Int_t((fN>>kNbits)&kMask);}
145 Int_t GetNShared() const { return Int_t(((fN>>kNbits)>>kNbits)&kMask);}
5c5d503a 146 Int_t GetTBoccupancy() const;
147 Int_t GetTBcross() const;
e44586fb 148 Float_t GetQuality(Bool_t kZcorr) const;
dd8059a8 149 Float_t GetPadLength() const { return fPad[0];}
150 Float_t GetPadWidth() const { return fPad[1];}
ae4e8b84 151 Int_t GetPlane() const { return AliTRDgeometry::GetLayer(fDet); }
152
3e778975 153 Float_t* GetProbability(Bool_t force=kFALSE);
b25a5e9e 154 Float_t GetPt() const { return fPt; }
3e778975 155 inline Double_t GetPID(Int_t is=-1) const;
81b50104 156 Float_t GetS2Y() const { return fCov[0];}
e3cf3d02 157 Float_t GetS2Z() const { return fS2Z;}
81b50104 158 Double_t GetS2DYDX(Float_t) const { return fCov[2];}
159 inline Double_t GetS2DZDX(Float_t) const;
86a261ed 160 inline Double_t GetS2XcrossDZDX(Double_t absdzdx) const;
e3cf3d02 161 Float_t GetSigmaY() const { return fS2Y > 0. ? TMath::Sqrt(fS2Y) : 0.2;}
162 Float_t GetSnp() const { return fYref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
1fd9389f 163 Float_t GetTgl() const { return fZref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
dd8059a8 164 Float_t GetTilt() const { return fPad[2];}
3e778975 165 UInt_t GetTrackletWord() const { return 0;}
b72f4eaf 166 UShort_t GetVolumeId() const;
e3cf3d02 167 Float_t GetX0() const { return fX0;}
168 Float_t GetX() const { return fX0 - fX;}
81b50104 169 Float_t GetXcross() const { return fS2Y;}
829e9a79 170 Float_t GetY() const { return TMath::Abs(fY)<1.e-15?GetLocalY():fY;/*fYfit[0] - fYfit[1] * fX;*/}
171 Double_t GetYat(Double_t x) const { return fY/*fit[0]*/ - fYfit[1] * (fX0-x);}
1fd9389f 172 Float_t GetYfit(Int_t id) const { return fYfit[id];}
173 Float_t GetYref(Int_t id) const { return fYref[id];}
829e9a79 174 Float_t GetYref() const { return fYref[0] - fYref[1] *fX;}
175 Float_t GetZ() const { return TMath::Abs(fZ)<1.e-15?GetLocalZ():fZ;/*fZfit[0] - fZfit[1] * fX;*/}
176 Double_t GetZat(Double_t x) const { return fZ/*fit[0]*/ - fZfit[1] * (fX0-x);}
1fd9389f 177 Float_t GetZfit(Int_t id) const { return fZfit[id];}
178 Float_t GetZref(Int_t id) const { return fZref[id];}
829e9a79 179 Float_t GetZref() const { return fZref[0] - fZref[1] *fX;}
1fd9389f 180 Int_t GetYbin() const { return Int_t(GetY()/0.016);}
181 Int_t GetZbin() const { return Int_t(GetZ()/fPad[0]);}
e3cf3d02 182
ae4e8b84 183 inline AliTRDcluster* NextCluster();
71ea19a3 184 inline AliTRDcluster* PrevCluster();
e44586fb 185 void Print(Option_t *o = "") const;
71ea19a3 186 inline void ResetClusterIter(Bool_t forward = kTRUE);
980d5a2a 187 void Reset(Option_t *opt="");
ae4e8b84 188
68f9b6bd 189 void SetC(Float_t c, Int_t typ=0) { fC[typ] = c;}
803dc399 190 void SetChmbGood(Bool_t k = kTRUE){ SetBit(kChmbGood, k);}
1fd9389f 191 void SetChi2(Float_t chi2) { fChi2 = chi2;}
16cca13f 192 inline void SetCovRef(const Double_t *cov);
2eb10c34 193 void SetErrorMsg(ETRDtrackletError err) { SETBIT(fErrorMsg, err);}
e3cf3d02 194 void SetIndexes(Int_t i, Int_t idx) { fIndexes[i] = idx; }
195 void SetLabels(Int_t *lbls) { memcpy(fLabels, lbls, 3*sizeof(Int_t)); }
e20bef2b 196 void SetKink(Bool_t k = kTRUE){ SetBit(kKink, k);}
2eb10c34 197 void SetPrimary(Bool_t k = kTRUE){ SetBit(kPrimary, k);}
f29f13a6 198 void SetStandAlone(Bool_t st) { SetBit(kStandAlone, st); }
b25a5e9e 199 void SetPt(Double_t pt) { fPt = pt;}
29b87567 200 void SetOwner();
4ecadb52 201 void SetPadPlane(AliTRDpadPlane * const p);
dd8059a8 202 void SetPadLength(Float_t l) { fPad[0] = l;}
203 void SetPadWidth(Float_t w) { fPad[1] = w;}
cbe97468 204 void SetTilt(Float_t tilt) { fPad[2] = tilt; }
203967fc 205 void SetDetector(Int_t d) { fDet = d; }
bee2b41e 206 void SetDX(Float_t inDX) { fdX = inDX;}
4d6aee34 207 void SetReconstructor(const AliTRDReconstructor *rec) {fkReconstructor = rec;}
e3cf3d02 208 void SetX0(Float_t x0) { fX0 = x0; }
81b50104 209 void SetXYZ(TGeoHMatrix *mDet);
829e9a79 210 void SetYref(Int_t i, Float_t y) { if(i==0||i==1) fYref[i] = y;}
211 void SetZref(Int_t i, Float_t z) { if(i==0||i==1) fZref[i] = z;}
f29f13a6 212// void SetUsabilityMap(Long_t um) { fUsable = um; }
16cca13f 213 void Update(const AliTRDtrackV1* trk);
e3cf3d02 214 void UpdateUsed();
215 void UseClusters();
e4f2f73d 216
d937ad7a 217protected:
829e9a79 218 void Copy(TObject &ref) const;
cb29fcbf 219 void UnbiasDZDX(Bool_t rc, Float_t bz);
220 Double_t UnbiasY(Bool_t rc, Float_t bz);
e4f2f73d 221
e44586fb 222private:
3e778975 223 inline void SetN(Int_t n);
224 inline void SetNUsed(Int_t n);
225 inline void SetNShared(Int_t n);
4ecadb52 226 inline void Swap(Int_t &n1, Int_t &n2) const;
227 inline void Swap(Double_t &d1, Double_t &d2) const;
3e778975 228
4d6aee34 229 const AliTRDReconstructor *fkReconstructor;//! local reconstructor
e3cf3d02 230 AliTRDcluster **fClusterIter; //! clusters iterator
8d2bec9e 231 Int_t fIndexes[kNclusters]; //! Indexes
0323ef61 232 Float_t fExB; // tg(a_L) @ tracklet location
233 Float_t fVD; // drift velocity @ tracklet location
234 Float_t fT0; // time 0 @ tracklet location
235 Float_t fS2PRF; // sigma^2 PRF for xd->0 and phi=a_L
236 Float_t fDiffL; // longitudinal diffusion coefficient
237 Float_t fDiffT; // transversal diffusion coefficient
71ea19a3 238 Char_t fClusterIdx; //! clusters iterator
7c3eecb8 239 UChar_t fErrorMsg; // processing error
6ad5e6b2 240 UInt_t fN; // number of clusters attached/used/shared
e3cf3d02 241 Short_t fDet; // TRD detector
8d2bec9e 242 AliTRDcluster *fClusters[kNclusters]; // Clusters
2eb10c34 243 Float_t fPad[4]; // local pad definition : length/width/tilt/anode wire offset
1fd9389f 244 Float_t fYref[2]; // Reference y, dydx
245 Float_t fZref[2]; // Reference z, dz/dx
829e9a79 246 Float_t fYfit[2]; // Fit :: chamber local y, dy/dx
247 Float_t fZfit[2]; // Fit :: chamber local z, dz/dx
16cca13f 248 Float_t fPt; // Pt estimate @ tracklet [GeV/c]
e44586fb 249 Float_t fdX; // length of time bin
829e9a79 250 Float_t fX0; // anode wire position in TrackingCoordinates (alignment included)
251 Float_t fX; // local radial offset from anode wire where tracklet position is estimated
252 Float_t fY; // r-phi position of the tracklet in TrackingCoordinates (alignment included)
253 Float_t fZ; // z position of the tracklet in TrackingCoordinates (alignment included)
81b50104 254 Float_t fS2Y; // estimated radial cross point (chmb. coord.) in case of RC tracklets
e3cf3d02 255 Float_t fS2Z; // estimated resolution in the z direction
68f9b6bd 256 Float_t fC[2]; // Curvature for standalone [0] rieman [1] vertex constrained
e3cf3d02 257 Float_t fChi2; // Global chi2
1f97f376 258 Float_t fdEdx[kNdEdxSlices]; // dE/dx measurements for tracklet
1fd9389f 259 Float_t fProb[AliPID::kSPECIES]; // PID probabilities
e3cf3d02 260 Int_t fLabels[3]; // most frequent MC labels and total number of different labels
16cca13f 261 Double_t fRefCov[7]; // covariance matrix of the track in the yz plane + the rest of the diagonal elements
d937ad7a 262 Double_t fCov[3]; // covariance matrix of the tracklet in the xy plane
e4f2f73d 263
829e9a79 264 ClassDef(AliTRDseedV1, 13) // The offline TRD tracklet
e4f2f73d 265};
266
267//____________________________________________________________
e3cf3d02 268inline Float_t AliTRDseedV1::GetChi2Z() const
e4f2f73d 269{
e3cf3d02 270 Double_t dz = fZref[0]-fZfit[0]; dz*=dz;
271 Double_t cov[3]; GetCovAt(fX, cov);
272 Double_t s2 = fRefCov[2]+cov[2];
273 return s2 > 0. ? dz/s2 : 0.;
e4f2f73d 274}
275
276//____________________________________________________________
e3cf3d02 277inline Float_t AliTRDseedV1::GetChi2Y() const
e4f2f73d 278{
e3cf3d02 279 Double_t dy = fYref[0]-fYfit[0]; dy*=dy;
280 Double_t cov[3]; GetCovAt(fX, cov);
281 Double_t s2 = fRefCov[0]+cov[0];
282 return s2 > 0. ? dy/s2 : 0.;
e4f2f73d 283}
284
285//____________________________________________________________
f29f13a6 286inline Float_t AliTRDseedV1::GetChi2Phi() const
287{
288 Double_t dphi = fYref[1]-fYfit[1]; dphi*=dphi;
289 Double_t cov[3]; GetCovAt(fX, cov);
290 Double_t s2 = fRefCov[2]+cov[2];
291 return s2 > 0. ? dphi/s2 : 0.;
292}
293
16cca13f 294
295
296//____________________________________________________________
3e778975 297inline Double_t AliTRDseedV1::GetPID(Int_t is) const
298{
299 if(is<0) return fProb[AliPID::kElectron];
300 if(is<AliPID::kSPECIES) return fProb[is];
301 return 0.;
302}
303
304//____________________________________________________________
86a261ed 305Double_t AliTRDseedV1::GetS2XcrossDZDX(Double_t absdzdx) const
306{
307 // correct sigma(x_cross) for the width of the crossing area
308 if(absdzdx>0.05) return TMath::Exp(-1.58839-absdzdx*3.24116);
309 else return 0.957043-absdzdx*12.4597;
310}
311
312//____________________________________________________________
81b50104 313Double_t AliTRDseedV1::GetS2DZDX(Float_t dzdx) const
314{
cb29fcbf 315 // Error parametrization for dzdx.
316 // TODO Should be layer dependent
317
81b50104 318 Double_t p0[] = {0.02835, 0.03925},
319 p1[] = {0.04746, 0.06316};
cb29fcbf 320
81b50104 321 Double_t s2(p0[IsRowCross()]+p1[IsRowCross()]*dzdx*dzdx);
322 s2*=s2;
323 return s2;
324}
325
326 //____________________________________________________________
ae4e8b84 327inline AliTRDcluster* AliTRDseedV1::NextCluster()
328{
71ea19a3 329// Mimic the usage of STL iterators.
330// Forward iterator
331
ae4e8b84 332 fClusterIdx++; fClusterIter++;
8d2bec9e 333 while(fClusterIdx < kNclusters){
71ea19a3 334 if(!(*fClusterIter)){
335 fClusterIdx++;
336 fClusterIter++;
337 continue;
338 }
339 return *fClusterIter;
340 }
4d6aee34 341 return NULL;
71ea19a3 342}
343
344//____________________________________________________________
345inline AliTRDcluster* AliTRDseedV1::PrevCluster()
346{
347// Mimic the usage of STL iterators.
348// Backward iterator
349
350 fClusterIdx--; fClusterIter--;
351 while(fClusterIdx >= 0){
352 if(!(*fClusterIter)){
353 fClusterIdx--;
354 fClusterIter--;
355 continue;
356 }
357 return *fClusterIter;
358 }
4d6aee34 359 return NULL;
71ea19a3 360}
361
362//____________________________________________________________
363inline void AliTRDseedV1::ResetClusterIter(Bool_t forward)
364{
365// Mimic the usage of STL iterators.
366// Facilitate the usage of NextCluster for forward like
367// iterator (kTRUE) and PrevCluster for backward like iterator (kFALSE)
368
369 if(forward){
370 fClusterIter = &fClusters[0]; fClusterIter--;
371 fClusterIdx=-1;
372 } else {
8d2bec9e 373 fClusterIter = &fClusters[kNclusters-1]; fClusterIter++;
374 fClusterIdx=kNclusters;
71ea19a3 375 }
ae4e8b84 376}
377
3e778975 378//____________________________________________________________
16cca13f 379inline void AliTRDseedV1::SetCovRef(const Double_t *cov)
380{
381// Copy some "important" covariance matrix elements
382// var(y)
383// cov(y,z) var(z)
384// var(snp)
385// var(tgl)
386// cov(tgl, 1/pt) var(1/pt)
387
388 memcpy(&fRefCov[0], cov, 3*sizeof(Double_t)); // yz full covariance
389 fRefCov[3] = cov[ 5]; // snp variance
390 fRefCov[4] = cov[ 9]; // tgl variance
391 fRefCov[5] = cov[13]; // cov(tgl, 1/pt)
392 fRefCov[6] = cov[14]; // 1/pt variance
393}
394
395
396//____________________________________________________________
3e778975 397inline void AliTRDseedV1::SetN(Int_t n)
398{
6ad5e6b2 399 if(n<0 || n>kNclusters) return;
980d5a2a 400 fN &= ~kMask;
401 fN |= (n&kMask);
3e778975 402}
403
404//____________________________________________________________
405inline void AliTRDseedV1::SetNUsed(Int_t n)
406{
6ad5e6b2 407 if(n<0 || n>kNclusters) return;
980d5a2a 408 UInt_t mask(kMask<<kNbits);
6ad5e6b2 409 fN &= ~mask;
980d5a2a 410 n=n<<kNbits; fN |= (n&mask);
3e778975 411}
412
413//____________________________________________________________
414inline void AliTRDseedV1::SetNShared(Int_t n)
415{
6ad5e6b2 416 if(n<0 || n>kNclusters) return;
980d5a2a 417 UInt_t mask((kMask<<kNbits)<<kNbits);
6ad5e6b2 418 fN &= ~mask;
980d5a2a 419 n = (n<<kNbits)<<kNbits; fN|=(n&mask);
3e778975 420}
421
560e5c05 422//____________________________________________________________
4ecadb52 423inline void AliTRDseedV1::Swap(Int_t &n1, Int_t &n2) const
560e5c05 424{
425// swap values of n1 with n2
426 Int_t tmp(n1);
427 n1=n2; n2=tmp;
428}
429
430//____________________________________________________________
4ecadb52 431inline void AliTRDseedV1::Swap(Double_t &d1, Double_t &d2) const
560e5c05 432{
433// swap values of d1 with d2
434 Double_t tmp(d1);
435 d1=d2; d2=tmp;
436}
437
3e778975 438
e4f2f73d 439#endif
440
47d5d320 441
6e49cfdb 442