OPAL/src issue #277: Check also if unphysical values (arbitrary threshold)

src/Steppers/Stepper.h

@@ -33,16 +33,19 @@ public:
         bool isNaN = false;
         for (int j = 0; j < 3; ++j) {
             if (std::isnan(bunch->R[i](j)) ||
-                std::isnan(bunch->P[i](j))) {
+                std::isnan(bunch->P[i](j)) ||
+                std::abs(bunch->R[i](j)) > 1.0e20 ||
+                std::abs(bunch->P[i](j)) > 1.0e20) {
                 isNaN = true;
                 break;
             }
         }
 
-        if ( !isGood || isNaN) {
+        bool isBad = (!isGood || isNaN);
+        if ( isBad ) {
             bunch->Bin[i] = -1;
         }
-        return !isGood;
+        return isBad;
     };
 
 protected: