Current File : //usr/include/boost/numeric/odeint/iterator/integrate/detail/integrate_adaptive.hpp
/*
[auto_generated]
boost/numeric/odeint/integrate/detail/integrate_adaptive.hpp
[begin_description]
Default Integrate adaptive implementation.
[end_description]
Copyright 2009-2011 Karsten Ahnert
Copyright 2009-2011 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_INTEGRATE_ADAPTIVE_HPP_INCLUDED
#define BOOST_NUMERIC_ODEINT_INTEGRATE_DETAIL_INTEGRATE_ADAPTIVE_HPP_INCLUDED
#include <stdexcept>
#include <boost/numeric/odeint/stepper/stepper_categories.hpp>
#include <boost/numeric/odeint/stepper/controlled_step_result.hpp>
#include <boost/numeric/odeint/iterator/integrate/detail/integrate_const.hpp>
#include <boost/numeric/odeint/iterator/adaptive_time_iterator.hpp>
#include <boost/numeric/odeint/iterator/integrate/detail/functors.hpp>
#include <boost/numeric/odeint/util/bind.hpp>
#include <boost/numeric/odeint/util/unwrap_reference.hpp>
#include <boost/numeric/odeint/util/copy.hpp>
#include <boost/numeric/odeint/util/detail/less_with_sign.hpp>
namespace boost {
namespace numeric {
namespace odeint {
namespace detail {
// forward declaration
template< class Stepper , class System , class State , class Time , class Observer>
size_t integrate_const(
Stepper stepper , System system , State &start_state ,
Time start_time , Time end_time , Time dt ,
Observer observer , stepper_tag );
/*
* integrate_adaptive for simple stepper is basically an integrate_const + some last step
*/
template< class Stepper , class System , class State , class Time , class Observer >
size_t integrate_adaptive(
Stepper stepper , System system , State &start_state ,
Time start_time , Time end_time , Time dt ,
Observer observer , stepper_tag
)
{
size_t steps = detail::integrate_const( stepper , system , start_state , start_time ,
end_time , dt , observer , stepper_tag() );
typename odeint::unwrap_reference< Observer >::type &obs = observer;
typename odeint::unwrap_reference< Stepper >::type &st = stepper;
Time end = start_time + dt*steps;
if( less_with_sign( end , end_time , dt ) )
{ //make a last step to end exactly at end_time
st.do_step( system , start_state , end , end_time - end );
steps++;
obs( start_state , end_time );
}
return steps;
}
/*
* classical integrate adaptive
*/
template< class Stepper , class System , class State , class Time , class Observer >
size_t integrate_adaptive(
Stepper stepper , System system , State &start_state ,
Time &start_time , Time end_time , Time &dt ,
Observer observer , controlled_stepper_tag
)
{
size_t obs_calls = 0;
boost::for_each( make_adaptive_time_range( stepper , system , start_state ,
start_time , end_time , dt ) ,
obs_caller< Observer >( obs_calls , observer ) );
return obs_calls-1;
}
/*
* integrate adaptive for dense output steppers
*
* step size control is used if the stepper supports it
*/
template< class Stepper , class System , class State , class Time , class Observer >
size_t integrate_adaptive(
Stepper stepper , System system , State &start_state ,
Time start_time , Time end_time , Time dt ,
Observer observer , dense_output_stepper_tag )
{
size_t obs_calls = 0;
boost::for_each( make_adaptive_time_range( stepper , system , start_state ,
start_time , end_time , dt ) ,
obs_caller< Observer >( obs_calls , observer ) );
return obs_calls-1;
}
} // namespace detail
} // namespace odeint
} // namespace numeric
} // namespace boost
#endif // BOOST_NUMERIC_ODEINT_INTEGRATE_DETAIL_INTEGRATE_ADAPTIVE_HPP_INCLUDED
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