comparison DEPENDENCIES/generic/include/boost/numeric/odeint/integrate/detail/integrate_const.hpp @ 16:2665513ce2d3

Add boost headers

+/*
+ [auto_generated]
+ boost/numeric/odeint/integrate/detail/integrate_const.hpp
+
+ [begin_description]
+ integrate const implementation
+ [end_description]
+
+ Copyright 2009-2012 Karsten Ahnert
+ Copyright 2009-2012 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_CONST_HPP_INCLUDED
+#define BOOST_NUMERIC_ODEINT_INTEGRATE_DETAIL_INTEGRATE_CONST_HPP_INCLUDED
+
+#include <boost/numeric/odeint/util/unwrap_reference.hpp>
+#include <boost/numeric/odeint/stepper/stepper_categories.hpp>
+#include <boost/numeric/odeint/util/unit_helper.hpp>
+#include <boost/numeric/odeint/integrate/detail/integrate_adaptive.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_adaptive(
+        Stepper stepper , System system , State &start_state ,
+        Time &start_time , Time end_time , Time &dt ,
+        Observer observer , controlled_stepper_tag
+);
+
+
+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 
+)
+{
+    typename odeint::unwrap_reference< Observer >::type &obs = observer;
+    
+    Time time = start_time;
+    int step = 0;
+    
+    while( less_eq_with_sign( time+dt , end_time , dt ) )
+    {
+        obs( start_state , time );
+        stepper.do_step( system , start_state , time , dt );
+        // direct computation of the time avoids error propagation happening when using time += dt
+        // we need clumsy type analysis to get boost units working here
+        ++step;
+        time = start_time + static_cast< typename unit_value_type<Time>::type >(step) * dt;
+    }
+    obs( start_state , time );
+
+    return step;
+}
+
+
+
+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 , controlled_stepper_tag 
+)
+{
+    typename odeint::unwrap_reference< Observer >::type &obs = observer;
+    
+    Time time = start_time;
+    const Time time_step = dt;
+    int step = 0;
+    
+    while( less_eq_with_sign( time+time_step , end_time , dt ) )
+    {
+        obs( start_state , time );
+        detail::integrate_adaptive( stepper , system , start_state , time , time+time_step , dt ,
+                                    null_observer() , controlled_stepper_tag() );
+        // direct computation of the time avoids error propagation happening when using time += dt
+        // we need clumsy type analysis to get boost units working here
+        ++step;
+        time = start_time + static_cast< typename unit_value_type<Time>::type >(step) * time_step;
+    }
+    obs( start_state , time );
+    
+    return step;
+}
+
+
+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 , dense_output_stepper_tag 
+)
+{
+    typename odeint::unwrap_reference< Observer >::type &obs = observer;
+    
+    Time time = start_time;
+    
+    stepper.initialize( start_state , time , dt );
+    obs( start_state , time );
+    time += dt;
+
+    int obs_step( 1 );
+    int real_step( 0 );
+    
+    while( less_with_sign( time+dt , end_time , dt ) )
+    {
+        while( less_eq_with_sign( time , stepper.current_time() , dt ) )
+        {
+            stepper.calc_state( time , start_state );
+            obs( start_state , time );
+            ++obs_step;
+            // direct computation of the time avoids error propagation happening when using time += dt
+            // we need clumsy type analysis to get boost units working here
+            time = start_time + static_cast< typename unit_value_type<Time>::type >(obs_step) * dt;
+        }
+        // we have not reached the end, do another real step
+        if( less_with_sign( stepper.current_time()+stepper.current_time_step() ,
+                            end_time ,
+                            stepper.current_time_step() ) )
+        {
+            while( less_eq_with_sign( stepper.current_time() , time , dt ) )
+            {
+                stepper.do_step( system );
+                ++real_step;
+            }
+        }
+        else if( less_with_sign( stepper.current_time() , end_time , stepper.current_time_step() ) )
+        { // do the last step ending exactly on the end point
+            stepper.initialize( stepper.current_state() , stepper.current_time() , end_time - stepper.current_time() );
+            stepper.do_step( system );
+            ++real_step;
+        }
+        
+    }
+    // last observation, if we are still in observation interval
+    if( less_eq_with_sign( time , end_time , dt ) )
+    {
+        stepper.calc_state( time , start_state );
+        obs( start_state , time );
+    }
+    
+    return real_step;
+}
+
+
+} } } }
+
+#endif