From 1a00e14ffd2f98430560e9267788dad357f67abf Mon Sep 17 00:00:00 2001
From: prino <prino@f7af4fe6-9843-0410-8265-dc069ae4e863>
Date: Fri, 4 Sep 2009 16:36:01 +0000
Subject: [PATCH] Fix for sign of B field sign in the macro for vertex
 calculation (F. Prino)

---
 ITS/DoVerticesSPD.C | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ITS/DoVerticesSPD.C b/ITS/DoVerticesSPD.C
index 0e92f384d77..acffdedb8e0 100644
--- a/ITS/DoVerticesSPD.C
+++ b/ITS/DoVerticesSPD.C
@@ -86,7 +86,7 @@ Bool_t DoVerticesSPD(Int_t pileupalgo=1, Int_t optdebug=0){
   }
   esd->ReadFromTree(tree);
   tree->GetEvent(0);
-  Int_t fieldkG=(Int_t)(esd->GetMagneticField()+0.001);
+  Int_t fieldkG=(Int_t)(TMath::Abs(esd->GetMagneticField())+0.001);
   
   if(fieldkG==5){
     TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, 1., 1., 10., AliMagF::k5kG));
-- 
2.43.0