From 64ba641addf68f17b9a19d9c4085a40e1ce83e9a Mon Sep 17 00:00:00 2001
From: Houtan Bastani <houtan.bastani@ens.fr>
Date: Mon, 8 Aug 2011 18:48:03 +0200
Subject: [PATCH] bug fix: add parenthesis around STEADY_STATE output in case
 it contains an expression

---
 preprocessor/ExprNode.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/preprocessor/ExprNode.cc b/preprocessor/ExprNode.cc
index 9acb5c18d..3974cbbfc 100644
--- a/preprocessor/ExprNode.cc
+++ b/preprocessor/ExprNode.cc
@@ -1642,7 +1642,9 @@ UnaryOpNode::writeOutput(ostream &output, ExprNodeOutputType output_type,
           new_output_type = output_type;
           break;
         }
+      output << "(";
       arg->writeOutput(output, new_output_type, temporary_terms, tef_terms);
+      output << ")";
       return;
     case oSteadyStateParamDeriv:
       {