[u/mrichter/AliRoot.git] / TOF / AliTOFSDigit.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *    
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  * 
 **************************************************************************/

/* $Id$ */

//_________________________________________________________________________//
//                                                                         //
//  TOF sdigit: member variables                                           //
//  fSector  : TOF sector                                                  //
//  fPlate   : TOF plate                                                   //
//  fStrip   : strips number                                               //
//  fPadx    : pad number along x                                          //
//  fPadz    : pad number along z                                          //
//  fTdc     : TArrayI of TDC values                                       //
//  fAdc     : TArrayI of ADC values                                       //
//                                                                         //
//  Getters, setters and member functions  defined here                    //
//                                                                         //
// -- Authors: F. Pierella, A. Seganti, D. Vicinanza                       //
//_________________________________________________________________________//

//#include "TArrayI.h"

#include "AliLog.h"

#include "AliTOFGeometry.h"
#include "AliTOFSDigit.h"

ClassImp(AliTOFSDigit)

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit():
  fSector(-1),
  fPlate(-1),
  fStrip(-1),
  fPadx(-1),
  fPadz(-1),
  fNDigits(0),
  fTdc(0x0),
  fAdc(0x0),
  fTracks(0x0)
{
  //
  // default ctor
  //
}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit(Int_t tracknum, Int_t *vol,Int_t *digit):
  TObject(),
  fSector(-1),
  fPlate(-1),
  fStrip(-1),
  fPadx(-1),
  fPadz(-1),
  fNDigits(0),
  fTdc(0x0),
  fAdc(0x0),
  fTracks(0x0)
{
  //
  // Constructor of digit object
  //

  fSector = vol[0];
  fPlate  = vol[1];
  fStrip  = vol[2];
  fPadx   = vol[3];
  fPadz   = vol[4];
  fNDigits = 1;
  fTdc = new TArrayI(fNDigits);
  (*fTdc)[0] = digit[0];
  fAdc = new TArrayI(fNDigits);
  (*fAdc)[0] = digit[1];
  fTracks = new TArrayI(kMAXDIGITS*fNDigits);
  (*fTracks)[0] = tracknum;
  for (Int_t i = 1; i <kMAXDIGITS*fNDigits; i++) {
    (*fTracks)[i] = -1;
  }
}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit(const AliTOFSDigit & digit):
  TObject(digit),
  fSector(digit.fSector),
  fPlate(digit.fPlate),
  fStrip(digit.fStrip),
  fPadx(digit.fPadx),
  fPadz(digit.fPadz),
  fNDigits(digit.fNDigits),
  fTdc(0x0),
  fAdc(0x0),
  fTracks(0x0)
{
  // 
  // copy ctor for AliTOFSDigit object
  //
  fTdc = new TArrayI(*digit.fTdc);  
  fAdc = new TArrayI(*digit.fAdc);
  fTracks = new TArrayI(*digit.fTracks);
}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit& AliTOFSDigit::operator=(const AliTOFSDigit & digit)
{
  // 
  // copy ctor for AliTOFSDigit object
  //

  if (this == &digit)
    return *this;

  TObject::operator=(digit);
  fSector = digit.fSector;
  fPlate  = digit.fPlate;
  fStrip  = digit.fStrip;
  fPadx   = digit.fPadx;
  fPadz   = digit.fPadz;
  fNDigits = digit.fNDigits;
  fTdc = digit.fTdc;
  fAdc = digit.fAdc;
  fTracks = digit.fTracks;
  return *this;

}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::AliTOFSDigit(Int_t sector, Int_t plate, Int_t strip, Int_t padx,
			   Int_t padz, Int_t tdc, Int_t adc):
  fSector(sector),
  fPlate(plate),
  fStrip(strip),
  fPadx(padx),
  fPadz(padz),
  fNDigits(1),
  fTdc(0x0),
  fAdc(0x0),
  fTracks(0x0)
{
  //
  // Constructor for sdigit
  //
  fTdc = new TArrayI(fNDigits);
  (*fTdc)[0] = tdc;   
  fAdc = new TArrayI(fNDigits);
  (*fAdc)[0] = adc;   
  // no tracks were specified, set them to -1
  fTracks = new TArrayI(kMAXDIGITS*fNDigits);
  for (Int_t i = 0; i <kMAXDIGITS*fNDigits; i++) {
    (*fTracks)[i] = -1;
  }
}

////////////////////////////////////////////////////////////////////////
void AliTOFSDigit::GetLocation(Int_t *Loc) const
{
  //
  // Get the coordinates of the digit
  // in terms of Sector - Plate - Strip - Pad
  //
  
  Loc[0]=fSector;
  Loc[1]=fPlate;
  Loc[2]=fStrip;
  Loc[3]=fPadx;
  Loc[4]=fPadz;
}

////////////////////////////////////////////////////////////////////////
void AliTOFSDigit::Update(Float_t tdcbin, Int_t tdc, Int_t adc, Int_t track)
{
  //
  // Add charge and track
  //
  
  Int_t sameTime = -1;
  Float_t tdcwindow=((Float_t)AliTOFGeometry::TimeDiff())/tdcbin;
  for (Int_t i = 0; i < fNDigits; i++) {
    if (TMath::Abs(tdc-fTdc->At(i)) < tdcwindow) {
      sameTime = i;
      break;
    }
  }
  
  if (sameTime >= 0) {
    (*fAdc)[sameTime] += adc;
    // update track - find the first -1  value and replace it by the
    // track number
    for (Int_t iTrack=0; iTrack<kMAXDIGITS; iTrack++) {
      if ((*fTracks)[sameTime*kMAXDIGITS+iTrack] == -1) {
	(*fTracks)[sameTime*kMAXDIGITS+iTrack] = track;
	break;
      }
      // write warning about many tracks going to this pad
      if (iTrack == kMAXDIGITS) {
	AliWarning("Many hits in the padhit");
	//	ToAliWarning(PrintPad());
      }
    }
  } else {
    // add new time slot
    fNDigits++;
    fTdc->Set(fNDigits);
    (*fTdc)[fNDigits-1] = tdc;
    fAdc->Set(fNDigits);
    (*fAdc)[fNDigits-1] = adc;
    fTracks->Set(fNDigits*kMAXDIGITS);
    (*fTracks)[(fNDigits-1)*kMAXDIGITS] = track;
    for (Int_t i = 1; i <kMAXDIGITS; i++) {
      (*fTracks)[(fNDigits-1)*kMAXDIGITS+i] = -1;
    }
  }
  
}

////////////////////////////////////////////////////////////////////////
void AliTOFSDigit::Update(AliTOFSDigit* sdig)
{

  //
  // Perform the sum with sdig
  //

  // start loop on all sdig locations
  Int_t nlocations=sdig->GetNDigits();

  for (Int_t j = 0; j < nlocations; j++) {
    Float_t tdcbin = AliTOFGeometry::TdcBinWidth();// [ps] hardwired for the time being
    Int_t tdc=(Int_t)sdig->GetTdc(j);
    Int_t adc=(Int_t)sdig->GetAdc(j);
    // getting here only the first track number
    Int_t track=GetTrack(j,0);
    
    
    Int_t sameTime = -1;
    Float_t tdcwindow=((Float_t)AliTOFGeometry::TimeDiff())/tdcbin;
    for (Int_t i = 0; i < fNDigits; i++) {
      if (TMath::Abs(tdc-fTdc->At(i)) < tdcwindow) {
	sameTime = i;
	break;
      }
    }
    
    if (sameTime >= 0) {
      (*fAdc)[sameTime] += adc;
      // update track - find the first -1  value and replace it by the
      // track number
      for (Int_t iTrack=0; iTrack<kMAXDIGITS; iTrack++) {
	if ((*fTracks)[sameTime*kMAXDIGITS+iTrack] == -1) {
	  (*fTracks)[sameTime*kMAXDIGITS+iTrack] = track;
	  break;
	}
	// write warning about many tracks going to this pad
	if (iTrack == kMAXDIGITS) {
	  AliWarning("Many hits in the padhit");
	  //	ToAliWarning(PrintPad());
	}
      }
    } else {
      // add new time slot
      fNDigits++;
      fTdc->Set(fNDigits);
      (*fTdc)[fNDigits-1] = tdc;
      fAdc->Set(fNDigits);
      (*fAdc)[fNDigits-1] = adc;
      fTracks->Set(fNDigits*kMAXDIGITS);
      (*fTracks)[(fNDigits-1)*kMAXDIGITS] = track;
      for (Int_t i = 1; i <kMAXDIGITS; i++) {
	(*fTracks)[(fNDigits-1)*kMAXDIGITS+i] = -1;
      } // for (Int_t i = 1; i <kMAXDIGITS; i++)
    } // if (sameTime >= 0)
  } // end loop on sdig locations
}

////////////////////////////////////////////////////////////////////////
AliTOFSDigit::~AliTOFSDigit()
{
  //
  // dtor
  //
  delete fTdc;
  delete fAdc;
  delete fTracks;
}

////////////////////////////////////////////////////////////////////////

Int_t AliTOFSDigit::GetTotPad() const
{
  //
  // Get the "total" index of the pad inside a Sector
  // starting from the digits data.
  //
  
  Int_t pad = 2*fPadx + fPadz;
  //Int_t pad = fPadx+AliTOFGeometry::NpadX()*fPadz;
  Int_t before=0;
  
  switch(fPlate){ 
  case 0:
    //before = 0;
    break;
  case 1:
    before = AliTOFGeometry::NStripC();
    break;
  case 2:
    before = AliTOFGeometry::NStripB() +   AliTOFGeometry::NStripC();
    break;
  case 3:
    before = AliTOFGeometry::NStripA() +   AliTOFGeometry::NStripB() + AliTOFGeometry::NStripC();
    break;
  case 4:
    before = AliTOFGeometry::NStripA() + 2*AliTOFGeometry::NStripB() + AliTOFGeometry::NStripC();
    break;
  }
  
  Int_t strip = fStrip + before;
  Int_t padTot = AliTOFGeometry::NpadXStrip()*strip + pad;
  return padTot;
}
Commit	Line	Data
5919c40c	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
88cb7938	16	/* $Id$ */
5919c40c	17
0e46b9ae	18	//_________________________________________________________________________//
	19	// //
	20	// TOF sdigit: member variables //
	21	// fSector : TOF sector //
	22	// fPlate : TOF plate //
	23	// fStrip : strips number //
	24	// fPadx : pad number along x //
	25	// fPadz : pad number along z //
bf33f8f0	26	// fTdc : TArrayI of TDC values //
bf33f8f0	27	// fAdc : TArrayI of ADC values //
0e46b9ae	28	// //
	29	// Getters, setters and member functions defined here //
	30	// //
	31	// -- Authors: F. Pierella, A. Seganti, D. Vicinanza //
	32	//_________________________________________________________________________//
ea7a588a	33
5c7c93fa	34	//#include "TArrayI.h"
5919c40c	35
d076c8d5	36	#include "AliLog.h"
0e46b9ae	37
0f4a7374	38	#include "AliTOFGeometry.h"
88cb7938	39	#include "AliTOFSDigit.h"
5919c40c	40
	41	ClassImp(AliTOFSDigit)
	42
	43	////////////////////////////////////////////////////////////////////////
655e379f	44	AliTOFSDigit::AliTOFSDigit():
	45	fSector(-1),
	46	fPlate(-1),
	47	fStrip(-1),
	48	fPadx(-1),
	49	fPadz(-1),
	50	fNDigits(0),
	51	fTdc(0x0),
	52	fAdc(0x0),
	53	fTracks(0x0)
5919c40c	54	{
ea7a588a	55	//
	56	// default ctor
	57	//
5919c40c	58	}
	59
	60	////////////////////////////////////////////////////////////////////////
bf33f8f0	61	AliTOFSDigit::AliTOFSDigit(Int_t tracknum, Int_t vol,Int_t digit):
655e379f	62	TObject(),
	63	fSector(-1),
	64	fPlate(-1),
	65	fStrip(-1),
	66	fPadx(-1),
	67	fPadz(-1),
	68	fNDigits(0),
	69	fTdc(0x0),
	70	fAdc(0x0),
	71	fTracks(0x0)
5919c40c	72	{
ea7a588a	73	//
	74	// Constructor of digit object
	75	//
0f4a7374	76
5919c40c	77	fSector = vol[0];
	78	fPlate = vol[1];
	79	fStrip = vol[2];
	80	fPadx = vol[3];
	81	fPadz = vol[4];
	82	fNDigits = 1;
bf33f8f0	83	fTdc = new TArrayI(fNDigits);
5919c40c	84	(*fTdc)[0] = digit[0];
bf33f8f0	85	fAdc = new TArrayI(fNDigits);
5919c40c	86	(*fAdc)[0] = digit[1];
	87	fTracks = new TArrayI(kMAXDIGITS*fNDigits);
	88	(*fTracks)[0] = tracknum;
	89	for (Int_t i = 1; i <kMAXDIGITS*fNDigits; i++) {
	90	(*fTracks)[i] = -1;
	91	}
	92	}
	93
	94	////////////////////////////////////////////////////////////////////////
655e379f	95	AliTOFSDigit::AliTOFSDigit(const AliTOFSDigit & digit):
8a190ba2	96	TObject(digit),
	97	fSector(digit.fSector),
	98	fPlate(digit.fPlate),
	99	fStrip(digit.fStrip),
	100	fPadx(digit.fPadx),
	101	fPadz(digit.fPadz),
	102	fNDigits(digit.fNDigits),
655e379f	103	fTdc(0x0),
	104	fAdc(0x0),
	105	fTracks(0x0)
5919c40c	106	{
	107	//
	108	// copy ctor for AliTOFSDigit object
	109	//
bf33f8f0	110	fTdc = new TArrayI(*digit.fTdc);
bf33f8f0	111	fAdc = new TArrayI(*digit.fAdc);
5919c40c	112	fTracks = new TArrayI(*digit.fTracks);
	113	}
	114
7aeeaf38	115	////////////////////////////////////////////////////////////////////////
	116	AliTOFSDigit& AliTOFSDigit::operator=(const AliTOFSDigit & digit)
	117	{
	118	//
	119	// copy ctor for AliTOFSDigit object
	120	//
8a190ba2	121
	122	if (this == &digit)
	123	return *this;
	124
	125	TObject::operator=(digit);
	126	fSector = digit.fSector;
	127	fPlate = digit.fPlate;
	128	fStrip = digit.fStrip;
	129	fPadx = digit.fPadx;
	130	fPadz = digit.fPadz;
	131	fNDigits = digit.fNDigits;
	132	fTdc = digit.fTdc;
	133	fAdc = digit.fAdc;
	134	fTracks = digit.fTracks;
7aeeaf38	135	return *this;
	136
	137	}
	138
5919c40c	139	////////////////////////////////////////////////////////////////////////
5919c40c	140	AliTOFSDigit::AliTOFSDigit(Int_t sector, Int_t plate, Int_t strip, Int_t padx,
bf33f8f0	141	Int_t padz, Int_t tdc, Int_t adc):
655e379f	142	fSector(sector),
	143	fPlate(plate),
	144	fStrip(strip),
	145	fPadx(padx),
	146	fPadz(padz),
	147	fNDigits(1),
	148	fTdc(0x0),
	149	fAdc(0x0),
	150	fTracks(0x0)
5919c40c	151	{
ea7a588a	152	//
	153	// Constructor for sdigit
	154	//
bf33f8f0	155	fTdc = new TArrayI(fNDigits);
5919c40c	156	(*fTdc)[0] = tdc;
bf33f8f0	157	fAdc = new TArrayI(fNDigits);
ea7a588a	158	(*fAdc)[0] = adc;
ea7a588a	159	// no tracks were specified, set them to -1
5919c40c	160	fTracks = new TArrayI(kMAXDIGITS*fNDigits);
	161	for (Int_t i = 0; i <kMAXDIGITS*fNDigits; i++) {
	162	(*fTracks)[i] = -1;
	163	}
	164	}
ea7a588a	165
5919c40c	166	////////////////////////////////////////////////////////////////////////
	167	void AliTOFSDigit::GetLocation(Int_t *Loc) const
	168	{
ea7a588a	169	//
	170	// Get the coordinates of the digit
	171	// in terms of Sector - Plate - Strip - Pad
	172	//
	173
	174	Loc[0]=fSector;
	175	Loc[1]=fPlate;
	176	Loc[2]=fStrip;
	177	Loc[3]=fPadx;
	178	Loc[4]=fPadz;
5919c40c	179	}
	180
	181	////////////////////////////////////////////////////////////////////////
b213b8bd	182	void AliTOFSDigit::Update(Float_t tdcbin, Int_t tdc, Int_t adc, Int_t track)
5919c40c	183	{
ea7a588a	184	//
	185	// Add charge and track
	186	//
	187
5919c40c	188	Int_t sameTime = -1;
0f4a7374	189	Float_t tdcwindow=((Float_t)AliTOFGeometry::TimeDiff())/tdcbin;
5919c40c	190	for (Int_t i = 0; i < fNDigits; i++) {
b213b8bd	191	if (TMath::Abs(tdc-fTdc->At(i)) < tdcwindow) {
5919c40c	192	sameTime = i;
	193	break;
	194	}
	195	}
ea7a588a	196
5919c40c	197	if (sameTime >= 0) {
7529e782	198	(*fAdc)[sameTime] += adc;
ea7a588a	199	// update track - find the first -1 value and replace it by the
ea7a588a	200	// track number
5919c40c	201	for (Int_t iTrack=0; iTrack<kMAXDIGITS; iTrack++) {
	202	if ((fTracks)[sameTimekMAXDIGITS+iTrack] == -1) {
	203	(fTracks)[sameTimekMAXDIGITS+iTrack] = track;
	204	break;
	205	}
ea7a588a	206	// write warning about many tracks going to this pad
5919c40c	207	if (iTrack == kMAXDIGITS) {
d076c8d5	208	AliWarning("Many hits in the padhit");
d076c8d5	209	// ToAliWarning(PrintPad());
5919c40c	210	}
	211	}
	212	} else {
ea7a588a	213	// add new time slot
5919c40c	214	fNDigits++;
	215	fTdc->Set(fNDigits);
	216	(*fTdc)[fNDigits-1] = tdc;
	217	fAdc->Set(fNDigits);
	218	(*fAdc)[fNDigits-1] = adc;
	219	fTracks->Set(fNDigits*kMAXDIGITS);
	220	(fTracks)[(fNDigits-1)kMAXDIGITS] = track;
	221	for (Int_t i = 1; i <kMAXDIGITS; i++) {
	222	(fTracks)[(fNDigits-1)kMAXDIGITS+i] = -1;
	223	}
	224	}
ea7a588a	225
5919c40c	226	}
8e72349e	227
	228	////////////////////////////////////////////////////////////////////////
	229	void AliTOFSDigit::Update(AliTOFSDigit* sdig)
	230	{
	231
	232	//
	233	// Perform the sum with sdig
	234	//
	235
	236	// start loop on all sdig locations
	237	Int_t nlocations=sdig->GetNDigits();
	238
	239	for (Int_t j = 0; j < nlocations; j++) {
d3c7bfac	240	Float_t tdcbin = AliTOFGeometry::TdcBinWidth();// [ps] hardwired for the time being
8e72349e	241	Int_t tdc=(Int_t)sdig->GetTdc(j);
	242	Int_t adc=(Int_t)sdig->GetAdc(j);
	243	// getting here only the first track number
	244	Int_t track=GetTrack(j,0);
	245
	246
	247	Int_t sameTime = -1;
0f4a7374	248	Float_t tdcwindow=((Float_t)AliTOFGeometry::TimeDiff())/tdcbin;
8e72349e	249	for (Int_t i = 0; i < fNDigits; i++) {
	250	if (TMath::Abs(tdc-fTdc->At(i)) < tdcwindow) {
	251	sameTime = i;
	252	break;
	253	}
	254	}
	255
	256	if (sameTime >= 0) {
bf33f8f0	257	(*fAdc)[sameTime] += adc;
8e72349e	258	// update track - find the first -1 value and replace it by the
	259	// track number
	260	for (Int_t iTrack=0; iTrack<kMAXDIGITS; iTrack++) {
	261	if ((fTracks)[sameTimekMAXDIGITS+iTrack] == -1) {
	262	(fTracks)[sameTimekMAXDIGITS+iTrack] = track;
	263	break;
	264	}
	265	// write warning about many tracks going to this pad
	266	if (iTrack == kMAXDIGITS) {
d076c8d5	267	AliWarning("Many hits in the padhit");
d076c8d5	268	// ToAliWarning(PrintPad());
8e72349e	269	}
	270	}
	271	} else {
	272	// add new time slot
	273	fNDigits++;
	274	fTdc->Set(fNDigits);
	275	(*fTdc)[fNDigits-1] = tdc;
	276	fAdc->Set(fNDigits);
	277	(*fAdc)[fNDigits-1] = adc;
	278	fTracks->Set(fNDigits*kMAXDIGITS);
	279	(fTracks)[(fNDigits-1)kMAXDIGITS] = track;
	280	for (Int_t i = 1; i <kMAXDIGITS; i++) {
	281	(fTracks)[(fNDigits-1)kMAXDIGITS+i] = -1;
	282	} // for (Int_t i = 1; i <kMAXDIGITS; i++)
	283	} // if (sameTime >= 0)
	284	} // end loop on sdig locations
	285	}
	286
5919c40c	287	////////////////////////////////////////////////////////////////////////
	288	AliTOFSDigit::~AliTOFSDigit()
	289	{
ea7a588a	290	//
	291	// dtor
	292	//
5919c40c	293	delete fTdc;
	294	delete fAdc;
	295	delete fTracks;
	296	}
	297
	298	////////////////////////////////////////////////////////////////////////
	299
96f01799	300	Int_t AliTOFSDigit::GetTotPad() const
5919c40c	301	{
ea7a588a	302	//
	303	// Get the "total" index of the pad inside a Sector
	304	// starting from the digits data.
	305	//
	306
7e6dce66	307	Int_t pad = 2*fPadx + fPadz;
7e6dce66	308	//Int_t pad = fPadx+AliTOFGeometry::NpadX()*fPadz;
5919c40c	309	Int_t before=0;
ea7a588a	310
5919c40c	311	switch(fPlate){
7e6dce66	312	case 0:
7e6dce66	313	//before = 0;
ea7a588a	314	break;
7e6dce66	315	case 1:
96f01799	316	before = AliTOFGeometry::NStripC();
ea7a588a	317	break;
7e6dce66	318	case 2:
96f01799	319	before = AliTOFGeometry::NStripB() + AliTOFGeometry::NStripC();
ea7a588a	320	break;
7e6dce66	321	case 3:
96f01799	322	before = AliTOFGeometry::NStripA() + AliTOFGeometry::NStripB() + AliTOFGeometry::NStripC();
ea7a588a	323	break;
7e6dce66	324	case 4:
96f01799	325	before = AliTOFGeometry::NStripA() + 2*AliTOFGeometry::NStripB() + AliTOFGeometry::NStripC();
ea7a588a	326	break;
5919c40c	327	}
5919c40c	328
7e6dce66	329	Int_t strip = fStrip + before;
7e6dce66	330	Int_t padTot = AliTOFGeometry::NpadXStrip()*strip + pad;
5919c40c	331	return padTot;
5919c40c	332	}