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diff --git a/boost/numeric/odeint/iterator/integrate/detail/functors.hpp b/boost/numeric/odeint/iterator/integrate/detail/functors.hpp
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+/*
+ [auto_generated]
+ boost/numeric/odeint/integrate/detail/functors.hpp
+
+ [begin_description]
+ some functors for the iterator based integrate routines
+ [end_description]
+
+ Copyright 2009-2013 Karsten Ahnert
+ Copyright 2009-2013 Mario Mulansky
+
+ 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_NUMERIC_ODEINT_INTEGRATE_DETAIL_FUNCTORS_HPP_INCLUDED
+#define BOOST_NUMERIC_ODEINT_INTEGRATE_DETAIL_FUNCTORS_HPP_INCLUDED
+
+#include <utility>
+
+namespace boost {
+namespace numeric {
+namespace odeint {
+namespace detail {
+
+
+template< class Observer >
+struct obs_caller {
+
+    size_t &m_n;
+    Observer m_obs;
+
+    obs_caller( size_t &m , Observer &obs ) : m_n(m) , m_obs( obs ) {}
+
+    template< class State , class Time >
+    void operator()( std::pair< const State & , const Time & > x )
+    {
+        typedef typename odeint::unwrap_reference< Observer >::type observer_type;
+        observer_type &obs = m_obs;
+        obs( x.first , x.second );
+        m_n++;
+    }
+};
+
+template< class Observer , class Time >
+struct obs_caller_time {
+
+    Time &m_t;
+    Observer m_obs;
+
+    obs_caller_time( Time &t , Observer &obs ) : m_t(t) , m_obs( obs ) {}
+
+    template< class State >
+    void operator()( std::pair< const State & , const Time & > x )
+    {
+        typedef typename odeint::unwrap_reference< Observer >::type observer_type;
+        observer_type &obs = m_obs;
+        obs( x.first , x.second );
+        m_t = x.second;
+    }
+};
+
+} // namespace detail
+} // namespace odeint
+} // namespace numeric
+} // namespace boost
+
+#endif // BOOST_NUMERIC_ODEINT_INTEGRATE_DETAIL_FUNCTORS_HPP_INCLUDED