Making online tracklets usable in offline reconstruction
[u/mrichter/AliRoot.git] / TRD / AliTRDarrayI.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   *
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 /* $Id$ */
17
18 ///////////////////////////////////////////////////////////////////////
19 //                                                                   //  
20 // Added additional functionality to the original TArrayI.           //
21 //  - Multiple inheritance from TObject                              //
22 //  - Function Expand() allows to expand the array without           //
23 //    deleting the array contents                                    //
24 //                                                                   //
25 // Origin:  Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk  // 
26 //                                                                   //  
27 ///////////////////////////////////////////////////////////////////////
28
29 #include "AliTRDarrayI.h"
30
31 ClassImp(AliTRDarrayI)
32
33 //_____________________________________________________________________________
34 AliTRDarrayI::AliTRDarrayI():TArrayI()
35 {
36   //
37   // Default constructor
38   //
39
40 }
41
42 //_____________________________________________________________________________
43 AliTRDarrayI::~AliTRDarrayI()
44 {
45   //
46   // Default destructor
47   //
48
49 }
50
51 //_____________________________________________________________________________
52 void AliTRDarrayI::Copy(TObject &a) const
53 {
54   //
55   // Copy function
56   //
57
58   TObject::Copy(a);
59   TArrayI::Copy(((TArrayI &) a));
60
61 }
62
63 //_____________________________________________________________________________
64 void AliTRDarrayI::Expand(Int_t n)
65 {
66   //
67   // Sets the  array size of the TArrayI object to <n> integers and copies
68   // the old array.
69   // If n < 0 leave the array unchanged.
70   // The user is responsible for the appropriate size of the array.
71   //
72
73   if (n < 0) {
74     return;  
75   }
76
77   fArray = (Int_t *) TStorage::ReAlloc(fArray
78                                       ,n *sizeof(Int_t)
79                                       ,fN*sizeof(Int_t));
80
81   if (fArray != 0) {
82     fN = n;
83   }
84  
85 }
86