159 lines
5.5 KiB
Plaintext
159 lines
5.5 KiB
Plaintext
/*
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[auto_generated]
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boost/numeric/odeint/integrate/integrate_const.hpp
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[begin_description]
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Constant integration of ODEs, meaning that the state of the ODE is observed on constant time intervals.
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The routines makes full use of adaptive and dense-output methods.
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[end_description]
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Copyright 2009-2011 Karsten Ahnert
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Copyright 2009-2011 Mario Mulansky
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or
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copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_NUMERIC_ODEINT_INTEGRATE_INTEGRATE_CONST_HPP_INCLUDED
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#define BOOST_NUMERIC_ODEINT_INTEGRATE_INTEGRATE_CONST_HPP_INCLUDED
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#include <boost/type_traits/is_same.hpp>
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#include <boost/numeric/odeint/stepper/stepper_categories.hpp>
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#include <boost/numeric/odeint/iterator/integrate/null_observer.hpp>
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#include <boost/numeric/odeint/iterator/integrate/detail/integrate_const.hpp>
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#include <boost/numeric/odeint/iterator/integrate/detail/integrate_adaptive.hpp>
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namespace boost {
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namespace numeric {
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namespace odeint {
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/*
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* Integrates with constant time step dt.
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*/
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template< class Stepper , class System , class State , class Time , class Observer >
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size_t integrate_const(
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Stepper stepper , System system , State &start_state ,
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Time start_time , Time end_time , Time dt ,
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Observer observer
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)
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{
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typedef typename odeint::unwrap_reference< Stepper >::type::stepper_category stepper_category;
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// we want to get as fast as possible to the end
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if( boost::is_same< null_observer , Observer >::value )
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{
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return detail::integrate_adaptive(
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stepper , system , start_state ,
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start_time , end_time , dt ,
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observer , stepper_category() );
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}
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else
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{
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return detail::integrate_const( stepper , system , start_state ,
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start_time , end_time , dt ,
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observer , stepper_category() );
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}
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}
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/**
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* \brief Second version to solve the forwarding problem,
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* can be called with Boost.Range as start_state.
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*/
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template< class Stepper , class System , class State , class Time , class Observer >
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size_t integrate_const(
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Stepper stepper , System system , const State &start_state ,
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Time start_time , Time end_time , Time dt ,
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Observer observer
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)
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{
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typedef typename odeint::unwrap_reference< Stepper >::type::stepper_category stepper_category;
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// we want to get as fast as possible to the end
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if( boost::is_same< null_observer , Observer >::value )
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{
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return detail::integrate_adaptive(
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stepper , system , start_state ,
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start_time , end_time , dt ,
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observer , stepper_category() );
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}
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else
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{
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return detail::integrate_const( stepper , system , start_state ,
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start_time , end_time , dt ,
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observer , stepper_category() );
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}
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}
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/**
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* \brief integrate_const without observer calls
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*/
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template< class Stepper , class System , class State , class Time >
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size_t integrate_const(
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Stepper stepper , System system , State &start_state ,
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Time start_time , Time end_time , Time dt
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)
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{
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return integrate_const( stepper , system , start_state , start_time , end_time , dt , null_observer() );
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}
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/**
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* \brief Second version to solve the forwarding problem,
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* can be called with Boost.Range as start_state.
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*/
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template< class Stepper , class System , class State , class Time >
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size_t integrate_const(
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Stepper stepper , System system , const State &start_state ,
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Time start_time , Time end_time , Time dt
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)
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{
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return integrate_const( stepper , system , start_state , start_time , end_time , dt , null_observer() );
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}
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/********* DOXYGEN *********/
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/**
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* \fn integrate_const( Stepper stepper , System system , State &start_state , Time start_time , Time end_time , Time dt , Observer observer )
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* \brief Integrates the ODE with constant step size.
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*
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* Integrates the ODE defined by system using the given stepper.
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* This method ensures that the observer is called at constant intervals dt.
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* If the Stepper is a normal stepper without step size control, dt is also
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* used for the numerical scheme. If a ControlledStepper is provided, the
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* algorithm might reduce the step size to meet the error bounds, but it is
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* ensured that the observer is always called at equidistant time points
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* t0 + n*dt. If a DenseOutputStepper is used, the step size also may vary
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* and the dense output is used to call the observer at equidistant time
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* points.
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*
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* \param stepper The stepper to be used for numerical integration.
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* \param system Function/Functor defining the rhs of the ODE.
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* \param start_state The initial condition x0.
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* \param start_time The initial time t0.
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* \param end_time The final integration time tend.
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* \param dt The time step between observer calls, _not_ necessarily the
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* time step of the integration.
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* \param observer Function/Functor called at equidistant time intervals.
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* \return The number of steps performed.
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*/
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} // namespace odeint
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} // namespace numeric
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} // namespace boost
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#endif // BOOST_NUMERIC_ODEINT_INTEGRATE_INTEGRATE_CONST_HPP_INCLUDED
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