Merge pull request #16 from sawenzel/swenzel/patch

TGenEpEmv1: Return bool to indicate init success

Author: sawenzel

TEPEMGEN/TGenEpEmv1.cxx

@@ -109,7 +109,7 @@ TGenEpEmv1::~TGenEpEmv1()
 }
 
 //____________________________________________________________
-void TGenEpEmv1::Init()
+bool TGenEpEmv1::Init()
 {
   // Initialisation:
   // 1) define a generator
@@ -124,9 +124,10 @@ void TGenEpEmv1::Init()
   double err = 0;
   fXSection = CalcXSection(fXSectionEps,fMinXSTest,fMaxXSTest,err);
   if (fXSection<=0 || err/fXSection>fXSectionEps) {
-    abort();
+    return false;
   }
   fXSectionEps = err/fXSection;
+  return true;
 }
 
 //____________________________________________________________

TEPEMGEN/TGenEpEmv1.h

@@ -21,10 +21,10 @@ class TGenEpEmv1 : public TEpEmGen {
 
  public:
   TGenEpEmv1();
-  virtual ~TGenEpEmv1();
+  ~TGenEpEmv1() override;
 
-  virtual void GenerateEvent();
-  virtual void Init();
+  void GenerateEvent() override; // interface of TGenerator
+  bool Init(); // init function; returns true if successful; false otherwise
   void SetDebug(Int_t debug) {fDebug=debug;}
   void SetYRange(Double_t min, Double_t max) {fYMin = min; fYMax = max;};
   void SetPtRange(Double_t min, Double_t max) {fPtMin = min; fPtMax = max;};