X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDtrackletGTU.cxx;h=070cc443c405d7c148c67ce6cbff8a95b3e9c3de;hb=1defc49e95b356cae1b5da5f0441dcbd99d19106;hp=d63ed5ccff2ac2e334a48df4f722e52664cd1006;hpb=4ff7ed2ba254010118c10803a51211f929127762;p=u%2Fmrichter%2FAliRoot.git

diff --git a/TRD/AliTRDtrackletGTU.cxx b/TRD/AliTRDtrackletGTU.cxx
index d63ed5ccff2..070cc443c40 100644
--- a/TRD/AliTRDtrackletGTU.cxx
+++ b/TRD/AliTRDtrackletGTU.cxx
@@ -98,6 +98,8 @@ AliTRDtrackletGTU::AliTRDtrackletGTU(const AliTRDtrackletGTU& tracklet) :
 
 AliTRDtrackletGTU& AliTRDtrackletGTU::operator=(const AliTRDtrackletGTU &rhs)
 {
+  // assignment operator
+
   if (&rhs != this) {
     fTracklet = rhs.fTracklet;
     for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) 
@@ -171,7 +173,7 @@ void AliTRDtrackletGTU::SetSubChannel(Int_t zch, Int_t subch)
   fSubChannel[zch] = subch;
 }
 
-Int_t AliTRDtrackletGTU::GetSubChannel(Int_t zch) 
+Int_t AliTRDtrackletGTU::GetSubChannel(Int_t zch) const
 {
   // get the subchannel in the given z-channel
   return fSubChannel[zch];
@@ -179,6 +181,8 @@ Int_t AliTRDtrackletGTU::GetSubChannel(Int_t zch)
 
 Int_t AliTRDtrackletGTU::GetLabel() const
 {
+  // get the MC label for the tracklet, -1 if none
+
     if ( fTracklet->IsA() == TClass::GetClass("AliTRDtrackletMCM"))
 	return ((AliTRDtrackletMCM*) fTracklet)->GetLabel();
     else