Make indexing in temporary terms array ready for a (hypothetical future) implementation in C

src/ExprNode.cc

@@ -121,7 +121,7 @@ ExprNode::checkIfTemporaryTermThenWrite(ostream &output, ExprNodeOutputType outp
         // It is the responsibility of the caller to ensure that all temporary terms have their index
         assert(it2 != temporary_terms_idxs.end());
         output << "T" << LEFT_ARRAY_SUBSCRIPT(output_type)
-               << it2->second
+               << it2->second + ARRAY_SUBSCRIPT_OFFSET(output_type)
                << RIGHT_ARRAY_SUBSCRIPT(output_type);
       }
   return true;

src/ModelTree.cc

@@ -1179,7 +1179,7 @@ ModelTree::computeTemporaryTerms(bool is_matlab)
   temporary_terms_g2  = temp_terms_map[eSecondDeriv];
   temporary_terms_g3  = temp_terms_map[eThirdDeriv];
 
-  int idx = 1;
+  int idx = 0;
   for (map<expr_t, expr_t>::const_iterator it = temporary_terms_mlv.begin();
        it != temporary_terms_mlv.end(); it++)
     temporary_terms_idxs[it->first] = idx++;