new option for tests in alifakedisplay

[u/mrichter/AliRoot.git] / PYTHIA6 / AliPythia6.cxx

diff --git a/PYTHIA6/AliPythia6.cxx b/PYTHIA6/AliPythia6.cxx
index 87c8c96efb4ed415cb0629d5ee298e72d4d41adc..6c9ff6f8a8374755a335701fa5b2cc37fa159bcd 100644 (file)
--- a/PYTHIA6/AliPythia6.cxx
+++ b/PYTHIA6/AliPythia6.cxx
@@ -37,6 +37,7 @@ ClassImp(AliPythia6)
 # define pyevnw pyevnw_
 # define pyjoin pyjoin_
 # define qpygin0 qpygin0_
+# define setpowwght setpowwght_
 # define type_of_call
 #else
 # define pyclus PYCLUS
@@ -48,6 +49,7 @@ ClassImp(AliPythia6)
 # define pyevnw PYEVNW
 # define pyjoin PYJOIN
 # define qpygin0 QPYGIN0
+# define setpowwght SETPOWWGHT
 # define type_of_call _stdcall
 #endif
 
@@ -60,6 +62,7 @@ extern "C" void type_of_call qpygin0();
 extern "C" void type_of_call pyrobo(Int_t &, Int_t &, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &);
 extern "C" void type_of_call pyquen(Double_t &, Int_t &, Double_t &);
 extern "C" void type_of_call pyevnw();
+extern "C" void type_of_call setpowwght(Double_t &);
 
 
 //_____________________________________________________________________________
@@ -1508,6 +1511,12 @@ void AliPythia6::AtlasTuningMC09()
     SetPARP(89,1800.);         // [GeV]   Ref. energy
 }
 
+void AliPythia6::SetWeightPower(Double_t pow)
+{
+    setpowwght(pow);
+    SetMSTP(142, 1); // Tell Pythia to use pyevwt to calculate event wghts
+}
+
 void AliPythia6::SetPtHardRange(Float_t ptmin, Float_t ptmax)
 {
     // Set the pt hard range