TRD/AliTRDarrayS.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: AliTRDarrayS.cxx,v Exp $ */
  17
  18 ///////////////////////////////////////////////////////////////////////
  19 //                                                                   //
  20 // Added additional functionality to the original TArrayS.           //
  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 "AliTRDarrayS.h"
  30
  31 ClassImp(AliTRDarrayS)
  32
  33 //_____________________________________________________________________________
  34 AliTRDarrayS::AliTRDarrayS():TArrayS()
  35 {
  36   //
  37   // Default constructor
  38   //
  39
  40 }
  41
  42 //_____________________________________________________________________________
  43 AliTRDarrayS::~AliTRDarrayS()
  44 {
  45   //
  46   // Default destructor
  47   //
  48
  49   if (fArray) {
  50     delete [] fArray;
  51     fArray = 0;
  52   }
  53
  54 }
  55
  56 //_____________________________________________________________________________
  57 void AliTRDarrayS::Copy(TObject &a) const
  58 {
  59   //
  60   // Copy function
  61   //
  62
  63   TObject::Copy(a);
  64   TArrayS::Copy(((TArrayS &) a));
  65
  66 }
  67
  68 //_____________________________________________________________________________
  69 void AliTRDarrayS::Expand(Int_t n)
  70 {
  71   //
  72   // Sets the  array size of the TArrayF object to <n> integers and copies
  73   // the old array.
  74   // If n < 0 leave the array unchanged.
  75   // The user is responsible for the appropriate size of the array.
  76   //
  77
  78   if (n < 0) {
  79     return;
  80   }
  81
  82   fArray = (Short_t *) TStorage::ReAlloc(fArray
  83                                         ,n *sizeof(Short_t)
  84                                         ,fN*sizeof(Short_t));
  85
  86   if (fArray != 0) {
  87     fN = n;
  88   }
  89
  90 }
  91