propagate cluster error parametrization
[u/mrichter/AliRoot.git] / TRD / AliTRDtrackletWord.cxx
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   *
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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 /* $Id: AliTRDtrackletWord.cxx 28397 2008-09-02 09:33:00Z cblume $ */
17
18 ////////////////////////////////////////////////////////////////////////////
19 //                                                                        //
20 //  A tracklet word as from FEE                                           //
21 //                                                                        //
22 //  Author: J. Klein (Jochen.Klein@cern.ch)                               //
23 //                                                                        //
24 ////////////////////////////////////////////////////////////////////////////
25
26 #include "AliTRDtrackletWord.h"
27 #include "AliLog.h"
28
29 ClassImp(AliTRDtrackletWord)
30
31 AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord) :
32   AliTRDtrackletBase(),
33   fHCId(-1),
34   fTrackletWord(trackletWord)
35
36
37 }
38
39 AliTRDtrackletWord::AliTRDtrackletWord(UInt_t trackletWord, Int_t hcid) :
40   AliTRDtrackletBase(),
41   fHCId(hcid),
42   fTrackletWord(trackletWord)
43
44
45 }
46
47 AliTRDtrackletWord::AliTRDtrackletWord(const AliTRDtrackletWord &rhs) :
48   AliTRDtrackletBase(rhs),
49   fHCId(rhs.fHCId),
50   fTrackletWord(rhs.fTrackletWord)
51 {
52
53 }
54
55 AliTRDtrackletWord::~AliTRDtrackletWord() 
56 {
57
58 }
59
60 Int_t AliTRDtrackletWord::GetYbin() const {
61   // returns (signed) value of Y
62   if (fTrackletWord & 0x1000) {
63     return -((~(fTrackletWord-1)) & 0x1fff);
64   }
65   else {
66     return (fTrackletWord & 0x1fff);
67   }
68 }
69
70 Int_t AliTRDtrackletWord::GetdY() const 
71 {
72   // returns (signed) value of the deflection length
73   if (fTrackletWord & (1 << 19)) {
74     return -((~((fTrackletWord >> 13) - 1)) & 0x7f);
75   }
76   else {
77     return ((fTrackletWord >> 13) & 0x7f);
78   }
79 }