Added boost header

test/external/boost/msm/back/bind_helpers.hpp

@@ -0,0 +1,41 @@
+// Copyright 2008 Christophe Henry
+// henry UNDERSCORE christophe AT hotmail DOT com
+// This is an extended version of the state machine available in the boost::mpl library
+// Distributed under the same license as the original.
+// Copyright for the original version:
+// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
+// under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_MSM_BACK_BIND_HELPERS_H
+#define BOOST_MSM_BACK_BIND_HELPERS_H
+
+#include <functional>
+
+namespace boost { namespace msm { namespace back
+{
+    // helper to replace std::plus as the lack of implicit conversion makes it not usable in one of our bind
+    template<class _Ty,class _Tz>
+    struct plus2
+        : public std::binary_function<_Ty, _Tz, _Ty>
+    {
+        // functor for operator+
+        _Ty operator()( _Ty _Left, _Tz _Right) const
+        {
+            // apply operator+ to operands
+            return (_Left + _Right);
+        }
+    };
+    // helper to dereference a pointer to a function pointer
+    template <class T>
+    struct deref 
+    {
+        typedef T& result_type;
+        T& operator()(T*  f) const
+        {
+            return *f;
+        }
+    };
+} } }//boost::msm::back
+#endif //BOOST_MSM_BACK_BIND_HELPERS_H