From 456f5ba457920cbbe83905aaf0c999253f4a4d73 Mon Sep 17 00:00:00 2001
From: Arash Partow <partow@gmail.com>
Date: Wed, 27 Mar 2013 03:03:52 +1100
Subject: [PATCH] C++ Mathematical Expression Library (ExprTk) 
 http://www.partow.net/programming/exprtk/index.html

---
 exprtk.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exprtk.hpp b/exprtk.hpp
index cea32f1..5951188 100644
--- a/exprtk.hpp
+++ b/exprtk.hpp
@@ -1616,7 +1616,7 @@ namespace exprtk
             {
                ++s_itr_;
             }
-            if (is_end(s_itr_))
+            if (!is_end(s_itr_))
             {
                s_itr_ += mode;
                skip_whitespace();