| /* |
| [auto_generated] |
| boost/numeric/odeint/integrate/integrate_const.hpp |
| |
| [begin_description] |
| Constant integration of ODEs, meaning that the state of the ODE is observed on constant time intervals. |
| The routines makes full use of adaptive and dense-output methods. |
| [end_description] |
| |
| Copyright 2011-2013 Karsten Ahnert |
| Copyright 2011-2015 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_INTEGRATE_CONST_HPP_INCLUDED |
| #define BOOST_NUMERIC_ODEINT_INTEGRATE_INTEGRATE_CONST_HPP_INCLUDED |
| |
| #include <boost/type_traits/is_same.hpp> |
| |
| #include <boost/numeric/odeint/stepper/stepper_categories.hpp> |
| #include <boost/numeric/odeint/integrate/null_observer.hpp> |
| #include <boost/numeric/odeint/integrate/check_adapter.hpp> |
| #include <boost/numeric/odeint/integrate/detail/integrate_const.hpp> |
| #include <boost/numeric/odeint/integrate/detail/integrate_adaptive.hpp> |
| |
| namespace boost { |
| namespace numeric { |
| namespace odeint { |
| |
| |
| /* |
| * Integrates with constant time step dt. |
| */ |
| template<class Stepper, class System, class State, class Time, class Observer, class StepOverflowChecker> |
| size_t integrate_const( |
| Stepper stepper, System system, State &start_state, |
| Time start_time, Time end_time, Time dt, |
| Observer observer, StepOverflowChecker checker |
| ) { |
| typedef typename odeint::unwrap_reference<Stepper>::type::stepper_category stepper_category; |
| // we want to get as fast as possible to the end |
| // no overflow checks needed |
| if (boost::is_same<null_observer, Observer>::value) { |
| return detail::integrate_adaptive( |
| stepper, system, start_state, |
| start_time, end_time, dt, |
| observer, stepper_category()); |
| } |
| else { |
| // unwrap references |
| typedef typename odeint::unwrap_reference< Stepper >::type stepper_type; |
| typedef typename odeint::unwrap_reference< Observer >::type observer_type; |
| typedef typename odeint::unwrap_reference< StepOverflowChecker >::type checker_type; |
| |
| return detail::integrate_const(checked_stepper<stepper_type, checker_type>(stepper, checker), |
| system, start_state, |
| start_time, end_time, dt, |
| checked_observer<observer_type, checker_type>(observer, checker), |
| stepper_category()); |
| } |
| } |
| |
| /** |
| * \brief Second version to solve the forwarding problem, |
| * can be called with Boost.Range as start_state. |
| */ |
| template<class Stepper, class System, class State, class Time, class Observer, class StepOverflowChecker > |
| size_t integrate_const( |
| Stepper stepper, System system, const State &start_state, |
| Time start_time, Time end_time, Time dt, |
| Observer observer, StepOverflowChecker checker |
| ) { |
| typedef typename odeint::unwrap_reference<Stepper>::type::stepper_category stepper_category; |
| // we want to get as fast as possible to the end |
| |
| if (boost::is_same<null_observer, Observer>::value) { |
| return detail::integrate_adaptive( |
| stepper, system, start_state, |
| start_time, end_time, dt, |
| observer, stepper_category()); |
| } |
| else { |
| typedef typename odeint::unwrap_reference< Stepper >::type stepper_type; |
| typedef typename odeint::unwrap_reference< Observer >::type observer_type; |
| typedef typename odeint::unwrap_reference< StepOverflowChecker >::type checker_type; |
| |
| return detail::integrate_const(checked_stepper<stepper_type, checker_type>(stepper, checker), |
| system, start_state, |
| start_time, end_time, dt, |
| checked_observer<observer_type, checker_type>(observer, checker), |
| stepper_category()); |
| } |
| } |
| |
| |
| /** |
| * \brief integrate_const without step overflow checker |
| */ |
| 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) |
| { |
| typedef typename odeint::unwrap_reference<Stepper>::type::stepper_category stepper_category; |
| return detail::integrate_const(stepper, system, start_state, |
| start_time, end_time, dt, observer, stepper_category()); |
| } |
| |
| /** |
| * \brief Second version to solve the forwarding problem, |
| * can be called with Boost.Range as start_state. |
| */ |
| template<class Stepper, class System, class State, class Time, class Observer> |
| size_t integrate_const( |
| Stepper stepper, System system, const State &start_state, |
| Time start_time, Time end_time, Time dt, Observer observer |
| ) { |
| typedef typename odeint::unwrap_reference<Stepper>::type::stepper_category stepper_category; |
| return detail::integrate_const(stepper, system, start_state, |
| start_time, end_time, dt, observer, stepper_category()); |
| } |
| |
| |
| /** |
| * \brief integrate_const without observer calls |
| */ |
| template<class Stepper, class System, class State, class Time> |
| size_t integrate_const( |
| Stepper stepper, System system, State &start_state, |
| Time start_time, Time end_time, Time dt |
| ) { |
| return integrate_const(stepper, system, start_state, start_time, end_time, dt, null_observer()); |
| } |
| |
| /** |
| * \brief Second version to solve the forwarding problem, |
| * can be called with Boost.Range as start_state. |
| */ |
| template<class Stepper, class System, class State, class Time> |
| size_t integrate_const( |
| Stepper stepper, System system, const State &start_state, |
| Time start_time, Time end_time, Time dt |
| ) { |
| return integrate_const(stepper, system, start_state, start_time, end_time, dt, null_observer()); |
| } |
| |
| |
| |
| |
| |
| |
| /********* DOXYGEN *********/ |
| /** |
| * \fn integrate_const( Stepper stepper , System system , State &start_state , Time start_time , |
| * Time end_time , Time dt , Observer observer , StepOverflowChecker checker ) |
| * \brief Integrates the ODE with constant step size. |
| * |
| * Integrates the ODE defined by system using the given stepper. |
| * This method ensures that the observer is called at constant intervals dt. |
| * If the Stepper is a normal stepper without step size control, dt is also |
| * used for the numerical scheme. If a ControlledStepper is provided, the |
| * algorithm might reduce the step size to meet the error bounds, but it is |
| * ensured that the observer is always called at equidistant time points |
| * t0 + n*dt. If a DenseOutputStepper is used, the step size also may vary |
| * and the dense output is used to call the observer at equidistant time |
| * points. |
| * If a max_step_checker is provided as StepOverflowChecker, a |
| * no_progress_error is thrown if too many steps (default: 500) are performed |
| * without progress, i.e. in between observer calls. If no checker is provided, |
| * no such overflow check is performed. |
| * |
| * \param stepper The stepper to be used for numerical integration. |
| * \param system Function/Functor defining the rhs of the ODE. |
| * \param start_state The initial condition x0. |
| * \param start_time The initial time t0. |
| * \param end_time The final integration time tend. |
| * \param dt The time step between observer calls, _not_ necessarily the |
| * time step of the integration. |
| * \param observer [optional] Function/Functor called at equidistant time intervals. |
| * \param checker [optional] Functor to check for step count overflows, if no |
| * checker is provided, no exception is thrown. |
| * \return The number of steps performed. |
| */ |
| |
| } // namespace odeint |
| } // namespace numeric |
| } // namespace boost |
| |
| |
| |
| #endif // BOOST_NUMERIC_ODEINT_INTEGRATE_INTEGRATE_CONST_HPP_INCLUDED |