From 63a10756032fa5c677787fba209706b8bf1e4bef Mon Sep 17 00:00:00 2001
From: Carlo Zancanaro <carlo@carlo-laptop>
Date: Thu, 26 Apr 2012 16:15:17 +1000
Subject: A bunch of modifications working to a good solver.

---
 impl/Operator.hpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'impl/Operator.hpp')

diff --git a/impl/Operator.hpp b/impl/Operator.hpp
index f9a80f3..9f17cbf 100644
--- a/impl/Operator.hpp
+++ b/impl/Operator.hpp
@@ -9,6 +9,7 @@
 template<typename T>
 struct Operator {
   virtual const T eval(const std::vector< Expression<T> >&, const std::map<std::string, T>&) const = 0;
+  virtual std::string output() const = 0;
 };
 
 #include "Expression.hpp"
-- 
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