stepper/generation/make_controlled.hpp

0001 /*
0002  [auto_generated]
0003  boost/numeric/odeint/stepper/generation/make_controlled.hpp
0004
0005  [begin_description]
0006  Factory function to simplify the creation of controlled steppers from error steppers.
0007  [end_description]
0008
0009  Copyright 2011-2012 Karsten Ahnert
0010  Copyright 2011-2012 Mario Mulansky
0011
0012  Distributed under the Boost Software License, Version 1.0.
0013  (See accompanying file LICENSE_1_0.txt or
0014  copy at http://www.boost.org/LICENSE_1_0.txt)
0015  */
0016
0017
0018 #ifndef BOOST_NUMERIC_ODEINT_STEPPER_GENERATION_MAKE_CONTROLLED_HPP_INCLUDED
0019 #define BOOST_NUMERIC_ODEINT_STEPPER_GENERATION_MAKE_CONTROLLED_HPP_INCLUDED
0020
0021
0022
0023
0024 namespace boost {
0025 namespace numeric {
0026 namespace odeint {
0027
0028
0029
0030 // default template for the controller
0031 template< class Stepper > struct get_controller { };
0032
0033
0034
0035 // default controller factory
0036 template< class Stepper , class Controller >
0037 struct controller_factory
0038 {
0039     Controller operator()(
0040             typename Stepper::value_type abs_error ,
0041             typename Stepper::value_type rel_error ,
0042             const Stepper &stepper )
0043     {
0044         return Controller( abs_error , rel_error , stepper );
0045     }
0046
0047     Controller operator()(
0048             typename Stepper::value_type abs_error ,
0049             typename Stepper::value_type rel_error ,
0050             typename Stepper::time_type max_dt ,
0051             const Stepper &stepper )
0052     {
0053         return Controller( abs_error , rel_error , max_dt, stepper );
0054     }
0055 };
0056
0057
0058
0059
0060 namespace result_of
0061 {
0062     template< class Stepper >
0063     struct make_controlled
0064     {
0065         typedef typename get_controller< Stepper >::type type;
0066     };
0067 }
0068
0069
0070 template< class Stepper >
0071 typename result_of::make_controlled< Stepper >::type make_controlled(
0072         typename Stepper::value_type abs_error ,
0073         typename Stepper::value_type rel_error ,
0074         const Stepper & stepper = Stepper() )
0075 {
0076     typedef Stepper stepper_type;
0077     typedef typename result_of::make_controlled< stepper_type >::type controller_type;
0078     typedef controller_factory< stepper_type , controller_type > factory_type;
0079     factory_type factory;
0080     return factory( abs_error , rel_error , stepper );
0081 }
0082
0083
0084 template< class Stepper >
0085 typename result_of::make_controlled< Stepper >::type make_controlled(
0086         typename Stepper::value_type abs_error ,
0087         typename Stepper::value_type rel_error ,
0088         typename Stepper::time_type max_dt ,
0089         const Stepper & stepper = Stepper() )
0090 {
0091     typedef Stepper stepper_type;
0092     typedef typename result_of::make_controlled< stepper_type >::type controller_type;
0093     typedef controller_factory< stepper_type , controller_type > factory_type;
0094     factory_type factory;
0095     return factory( abs_error , rel_error , max_dt, stepper );
0096 }
0097
0098 } // odeint
0099 } // numeric
0100 } // boost
0101
0102
0103 #endif // BOOST_NUMERIC_ODEINT_STEPPER_GENERATION_MAKE_CONTROLLED_HPP_INCLUDED