Fix zero crossings for div calls

Author: lochel

Compiler/Template/CodegenC.tpl

@@ -4317,7 +4317,7 @@ template zeroCrossingTpl(Integer index1, Exp relation, Text &varDecls, Text &aux
     let indx = daeExp(idx, contextZeroCross, &preExp, &varDecls, &auxFunction)
     <<
     <%preExp%>
-    gout[<%index1%>] = (trunc(<%e1%>/<%e2%>) != trunc(data->simulationInfo->mathEventsValuePre[<%indx%>]/data->simulationInfo->mathEventsValuePre[<%indx%>+1])) ? 1 : -1;
+    gout[<%index1%>] = (trunc((<%e1%>)/(<%e2%>)) != trunc(data->simulationInfo->mathEventsValuePre[<%indx%>]/data->simulationInfo->mathEventsValuePre[<%indx%>+1])) ? 1 : -1;
     >>
   else
     error(sourceInfo(), ' UNKNOWN ZERO CROSSING for <%index1%>')

Compiler/Template/CodegenCFunctions.tpl

@@ -5740,7 +5740,7 @@ template daeExpCall(Exp call, Context context, Text &preExp, Text &varDecls, Tex
       if acceptMetaModelicaGrammar()
         then 'if (<%tvar%> == 0.0) {<%generateThrow()%>;}<%\n%>'
         else 'if (<%tvar%> == 0.0) {throwStreamPrint(threadData, "Division by zero %s", "<%Util.escapeModelicaStringToCString(cstr)%>");}<%\n%>'
-    'trunc((<%var1%>) / <%tvar%>)'
+    'trunc((<%var1%>) / (<%tvar%>))'
 
   case CALL(path=IDENT(name="mod"), expLst={e1,e2}, attr=CALL_ATTR(ty = ty)) then
     let var1 = daeExp(e1, context, &preExp, &varDecls, &auxFunction)