private boolean isIntegerValue(JExpression expr) {
   CType typeExpr = expr.getType();
   if (typeExpr instanceof CNumericType) {
     CNumericType numericType = (CNumericType) typeExpr;
     if (numericType.getTypeID() == Constants.TID_INT) {
       return true;
     }
   }
   return false;
 }