3 <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
4 <title>Class template dense_output_runge_kutta<Stepper, stepper_tag></title>
5 <link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css">
6 <meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
7 <link rel="home" href="../../../index.html" title="Chapter 1. Boost.Numeric.Odeint">
8 <link rel="up" href="../../../header/boost/numeric/odeint/stepper/dense_output_runge_kutta_hpp.html" title="Header <boost/numeric/odeint/stepper/dense_output_runge_kutta.hpp>">
9 <link rel="prev" href="dense_ou_idm45853739592848.html" title="Class template dense_output_runge_kutta<Stepper, explicit_controlled_stepper_fsal_tag>">
10 <link rel="next" href="../../../header/boost/numeric/odeint/stepper/euler_hpp.html" title="Header <boost/numeric/odeint/stepper/euler.hpp>">
12 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
13 <table cellpadding="2" width="100%"><tr>
14 <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../logo.jpg"></td>
15 <td align="center"><a href="../../../../../../../../index.html">Home</a></td>
16 <td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td>
17 <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
18 <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
19 <td align="center"><a href="../../../../../../../../more/index.htm">More</a></td>
22 <div class="spirit-nav">
23 <a accesskey="p" href="dense_ou_idm45853739592848.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../header/boost/numeric/odeint/stepper/dense_output_runge_kutta_hpp.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../../../header/boost/numeric/odeint/stepper/euler_hpp.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a>
25 <div class="refentry">
26 <a name="boost.numeric.odeint.dense_ou_idm45853739532912"></a><div class="titlepage"></div>
27 <div class="refnamediv">
28 <h2><span class="refentrytitle">Class template dense_output_runge_kutta<Stepper, stepper_tag></span></h2>
29 <p>boost::numeric::odeint::dense_output_runge_kutta<Stepper, stepper_tag> — The class representing dense-output Runge-Kutta steppers. </p>
31 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../../header/boost/numeric/odeint/stepper/dense_output_runge_kutta_hpp.html" title="Header <boost/numeric/odeint/stepper/dense_output_runge_kutta.hpp>">boost/numeric/odeint/stepper/dense_output_runge_kutta.hpp</a>>
34 </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Stepper<span class="special">></span>
35 <span class="keyword">class</span> <a class="link" href="dense_ou_idm45853739532912.html" title="Class template dense_output_runge_kutta<Stepper, stepper_tag>">dense_output_runge_kutta</a><span class="special"><</span><span class="identifier">Stepper</span><span class="special">,</span> <span class="identifier">stepper_tag</span><span class="special">></span> <span class="special">{</span>
36 <span class="keyword">public</span><span class="special">:</span>
37 <span class="comment">// types</span>
38 <span class="keyword">typedef</span> <span class="identifier">Stepper</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.stepper_type"></a><span class="identifier">stepper_type</span><span class="special">;</span>
39 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">state_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.state_type"></a><span class="identifier">state_type</span><span class="special">;</span>
40 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">wrapped_state_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.wrapped_state_type"></a><span class="identifier">wrapped_state_type</span><span class="special">;</span>
41 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">value_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>
42 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">deriv_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.deriv_type"></a><span class="identifier">deriv_type</span><span class="special">;</span>
43 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">wrapped_deriv_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.wrapped_deriv_type"></a><span class="identifier">wrapped_deriv_type</span><span class="special">;</span>
44 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">time_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.time_type"></a><span class="identifier">time_type</span><span class="special">;</span>
45 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">algebra_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.algebra_type"></a><span class="identifier">algebra_type</span><span class="special">;</span>
46 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">operations_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.operations_type"></a><span class="identifier">operations_type</span><span class="special">;</span>
47 <span class="keyword">typedef</span> <span class="identifier">stepper_type</span><span class="special">::</span><span class="identifier">resizer_type</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.resizer_type"></a><span class="identifier">resizer_type</span><span class="special">;</span>
48 <span class="keyword">typedef</span> <span class="identifier">dense_output_stepper_tag</span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.stepper_category"></a><span class="identifier">stepper_category</span><span class="special">;</span>
49 <span class="keyword">typedef</span> <span class="identifier">dense_output_runge_kutta</span><span class="special"><</span> <span class="identifier">Stepper</span> <span class="special">></span> <a name="boost.numeric.odeint.dense_ou_idm45853739532912.dense_output_stepper_type"></a><span class="identifier">dense_output_stepper_type</span><span class="special">;</span>
51 <span class="comment">// <a class="link" href="dense_ou_idm45853739532912.html#boost.numeric.odeint.dense_ou_idm45853739532912construct-copy-destruct">construct/copy/destruct</a></span>
52 <a class="link" href="dense_ou_idm45853739532912.html#idm45853739477312-bb"><span class="identifier">dense_output_runge_kutta</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">stepper_type</span> <span class="special">&</span> <span class="special">=</span> <span class="identifier">stepper_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
54 <span class="comment">// <a class="link" href="dense_ou_idm45853739532912.html#idm45853739518224-bb">public member functions</a></span>
55 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateType<span class="special">></span>
56 <span class="keyword">void</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739517664-bb"><span class="identifier">initialize</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">StateType</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">time_type</span><span class="special">,</span> <span class="identifier">time_type</span><span class="special">)</span><span class="special">;</span>
57 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> System<span class="special">></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special"><</span> <span class="identifier">time_type</span><span class="special">,</span> <span class="identifier">time_type</span> <span class="special">></span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739511776-bb"><span class="identifier">do_step</span></a><span class="special">(</span><span class="identifier">System</span><span class="special">)</span><span class="special">;</span>
58 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateOut<span class="special">></span> <span class="keyword">void</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739506864-bb"><span class="identifier">calc_state</span></a><span class="special">(</span><span class="identifier">time_type</span><span class="special">,</span> <span class="identifier">StateOut</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
59 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateOut<span class="special">></span>
60 <span class="keyword">void</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739501840-bb"><span class="identifier">calc_state</span></a><span class="special">(</span><span class="identifier">time_type</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">StateOut</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
61 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateType<span class="special">></span> <span class="keyword">void</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739496752-bb"><span class="identifier">adjust_size</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">StateType</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
62 <span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739493136-bb"><span class="identifier">current_state</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
63 <span class="identifier">time_type</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739489984-bb"><span class="identifier">current_time</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
64 <span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739486848-bb"><span class="identifier">previous_state</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
65 <span class="identifier">time_type</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739483696-bb"><span class="identifier">previous_time</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
66 <span class="identifier">time_type</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739480576-bb"><span class="identifier">current_time_step</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
68 <span class="comment">// <a class="link" href="dense_ou_idm45853739532912.html#idm45853739474832-bb">private member functions</a></span>
69 <span class="identifier">state_type</span> <span class="special">&</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739474256-bb"><span class="identifier">get_current_state</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span>
70 <span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739472720-bb"><span class="identifier">get_current_state</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
71 <span class="identifier">state_type</span> <span class="special">&</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739470912-bb"><span class="identifier">get_old_state</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span>
72 <span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739469376-bb"><span class="identifier">get_old_state</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
73 <span class="keyword">void</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739467568-bb"><span class="identifier">toggle_current_state</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span>
74 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateIn<span class="special">></span> <span class="keyword">bool</span> <a class="link" href="dense_ou_idm45853739532912.html#idm45853739466032-bb"><span class="identifier">resize_impl</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">StateIn</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
75 <span class="special">}</span><span class="special">;</span></pre></div>
76 <div class="refsect1">
77 <a name="idm45221360291392"></a><h2>Description</h2>
78 <div class="note"><table border="0" summary="Note">
80 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../../doc/src/images/note.png"></td>
81 <th align="left">Note</th>
83 <tr><td align="left" valign="top"><p>In this stepper, the initialize method has to be called before using the do_step method.</p></td></tr>
86 The dense-output functionality allows to interpolate the solution between subsequent integration points using intermediate results obtained during the computation. This version works based on a normal stepper without step-size control.</p>
89 <div class="refsect2">
90 <a name="idm45221360289584"></a><h3>Template Parameters</h3>
91 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
92 <pre class="literallayout"><span class="keyword">typename</span> Stepper</pre>
93 <p>The stepper type of the underlying algorithm. </p>
96 <div class="refsect2">
97 <a name="idm45221360286400"></a><h3>
98 <a name="boost.numeric.odeint.dense_ou_idm45853739532912construct-copy-destruct"></a><code class="computeroutput">dense_output_runge_kutta</code>
100 construct/copy/destruct</h3>
101 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
102 <pre class="literallayout"><a name="idm45853739477312-bb"></a><span class="identifier">dense_output_runge_kutta</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">stepper_type</span> <span class="special">&</span> stepper <span class="special">=</span> <span class="identifier">stepper_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre>Constructs the dense_output_runge_kutta class. An instance of the underlying stepper can be provided. <p>
104 <div class="variablelist"><table border="0" class="variablelist compact">
106 <col align="left" valign="top">
110 <td><p><span class="term">Parameters:</span></p></td>
111 <td><div class="variablelist"><table border="0" class="variablelist compact">
113 <col align="left" valign="top">
117 <td><p><span class="term"><code class="computeroutput">stepper</code></span></p></td>
118 <td><p>An instance of the underlying stepper. </p></td>
125 <div class="refsect2">
126 <a name="idm45221360272496"></a><h3>
127 <a name="idm45853739518224-bb"></a><code class="computeroutput">dense_output_runge_kutta</code> public member functions</h3>
128 <div class="orderedlist"><ol class="orderedlist" type="1">
129 <li class="listitem">
130 <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateType<span class="special">></span>
131 <span class="keyword">void</span> <a name="idm45853739517664-bb"></a><span class="identifier">initialize</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">StateType</span> <span class="special">&</span> x0<span class="special">,</span> <span class="identifier">time_type</span> t0<span class="special">,</span> <span class="identifier">time_type</span> dt0<span class="special">)</span><span class="special">;</span></pre>Initializes the stepper. Has to be called before do_step can be used to set the initial conditions and the step size. <p>
133 <div class="variablelist"><table border="0" class="variablelist compact">
135 <col align="left" valign="top">
139 <td><p><span class="term">Parameters:</span></p></td>
140 <td><div class="variablelist"><table border="0" class="variablelist compact">
142 <col align="left" valign="top">
147 <td><p><span class="term"><code class="computeroutput">dt0</code></span></p></td>
148 <td><p>The step size. </p></td>
151 <td><p><span class="term"><code class="computeroutput">t0</code></span></p></td>
152 <td><p>The initial time, at which the step should be performed. </p></td>
155 <td><p><span class="term"><code class="computeroutput">x0</code></span></p></td>
156 <td><p>The initial state of the ODE which should be solved. </p></td>
163 <li class="listitem">
164 <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> System<span class="special">></span>
165 <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special"><</span> <span class="identifier">time_type</span><span class="special">,</span> <span class="identifier">time_type</span> <span class="special">></span> <a name="idm45853739511776-bb"></a><span class="identifier">do_step</span><span class="special">(</span><span class="identifier">System</span> system<span class="special">)</span><span class="special">;</span></pre>Does one time step. <div class="note"><table border="0" summary="Note">
167 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../../doc/src/images/note.png"></td>
168 <th align="left">Note</th>
170 <tr><td align="left" valign="top"><p>initialize has to be called before using this method to set the initial conditions x,t and the stepsize. </p></td></tr>
176 <div class="variablelist"><table border="0" class="variablelist compact">
178 <col align="left" valign="top">
183 <td><p><span class="term">Parameters:</span></p></td>
184 <td><div class="variablelist"><table border="0" class="variablelist compact">
186 <col align="left" valign="top">
190 <td><p><span class="term"><code class="computeroutput">system</code></span></p></td>
191 <td><p>The system function to solve, hence the r.h.s. of the ordinary differential equation. It must fulfill the Simple System concept. </p></td>
196 <td><p><span class="term">Returns:</span></p></td>
197 <td><p>Pair with start and end time of the integration step. </p></td>
202 <li class="listitem">
203 <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateOut<span class="special">></span> <span class="keyword">void</span> <a name="idm45853739506864-bb"></a><span class="identifier">calc_state</span><span class="special">(</span><span class="identifier">time_type</span> t<span class="special">,</span> <span class="identifier">StateOut</span> <span class="special">&</span> x<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Calculates the solution at an intermediate point. <p>
205 <div class="variablelist"><table border="0" class="variablelist compact">
207 <col align="left" valign="top">
211 <td><p><span class="term">Parameters:</span></p></td>
212 <td><div class="variablelist"><table border="0" class="variablelist compact">
214 <col align="left" valign="top">
219 <td><p><span class="term"><code class="computeroutput">t</code></span></p></td>
220 <td><p>The time at which the solution should be calculated, has to be in the current time interval. </p></td>
223 <td><p><span class="term"><code class="computeroutput">x</code></span></p></td>
224 <td><p>The output variable where the result is written into. </p></td>
231 <li class="listitem">
232 <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateOut<span class="special">></span>
233 <span class="keyword">void</span> <a name="idm45853739501840-bb"></a><span class="identifier">calc_state</span><span class="special">(</span><span class="identifier">time_type</span> t<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">StateOut</span> <span class="special">&</span> x<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Calculates the solution at an intermediate point. Solves the forwarding problem. <p>
235 <div class="variablelist"><table border="0" class="variablelist compact">
237 <col align="left" valign="top">
241 <td><p><span class="term">Parameters:</span></p></td>
242 <td><div class="variablelist"><table border="0" class="variablelist compact">
244 <col align="left" valign="top">
249 <td><p><span class="term"><code class="computeroutput">t</code></span></p></td>
250 <td><p>The time at which the solution should be calculated, has to be in the current time interval. </p></td>
253 <td><p><span class="term"><code class="computeroutput">x</code></span></p></td>
254 <td><p>The output variable where the result is written into, can be a boost range. </p></td>
261 <li class="listitem">
262 <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateType<span class="special">></span> <span class="keyword">void</span> <a name="idm45853739496752-bb"></a><span class="identifier">adjust_size</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">StateType</span> <span class="special">&</span> x<span class="special">)</span><span class="special">;</span></pre>Adjust the size of all temporaries in the stepper manually. <p>
264 <div class="variablelist"><table border="0" class="variablelist compact">
266 <col align="left" valign="top">
270 <td><p><span class="term">Parameters:</span></p></td>
271 <td><div class="variablelist"><table border="0" class="variablelist compact">
273 <col align="left" valign="top">
277 <td><p><span class="term"><code class="computeroutput">x</code></span></p></td>
278 <td><p>A state from which the size of the temporaries to be resized is deduced. </p></td>
284 <li class="listitem">
285 <pre class="literallayout"><span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a name="idm45853739493136-bb"></a><span class="identifier">current_state</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the current state of the solution. <p>
287 <div class="variablelist"><table border="0" class="variablelist compact">
289 <col align="left" valign="top">
293 <td><p><span class="term">Returns:</span></p></td>
294 <td><p>The current state of the solution x(t). </p></td>
298 <li class="listitem">
299 <pre class="literallayout"><span class="identifier">time_type</span> <a name="idm45853739489984-bb"></a><span class="identifier">current_time</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the current time of the solution. <p>
301 <div class="variablelist"><table border="0" class="variablelist compact">
303 <col align="left" valign="top">
307 <td><p><span class="term">Returns:</span></p></td>
308 <td><p>The current time of the solution t. </p></td>
312 <li class="listitem">
313 <pre class="literallayout"><span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a name="idm45853739486848-bb"></a><span class="identifier">previous_state</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the last state of the solution. <p>
315 <div class="variablelist"><table border="0" class="variablelist compact">
317 <col align="left" valign="top">
321 <td><p><span class="term">Returns:</span></p></td>
322 <td><p>The last state of the solution x(t-dt). </p></td>
326 <li class="listitem">
327 <pre class="literallayout"><span class="identifier">time_type</span> <a name="idm45853739483696-bb"></a><span class="identifier">previous_time</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the last time of the solution. <p>
329 <div class="variablelist"><table border="0" class="variablelist compact">
331 <col align="left" valign="top">
335 <td><p><span class="term">Returns:</span></p></td>
336 <td><p>The last time of the solution t-dt. </p></td>
340 <li class="listitem">
341 <pre class="literallayout"><span class="identifier">time_type</span> <a name="idm45853739480576-bb"></a><span class="identifier">current_time_step</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the current time step. <p>
343 <div class="variablelist"><table border="0" class="variablelist compact">
345 <col align="left" valign="top">
349 <td><p><span class="term">Returns:</span></p></td>
356 <div class="refsect2">
357 <a name="idm45221360153040"></a><h3>
358 <a name="idm45853739474832-bb"></a><code class="computeroutput">dense_output_runge_kutta</code> private member functions</h3>
359 <div class="orderedlist"><ol class="orderedlist" type="1">
360 <li class="listitem"><pre class="literallayout"><span class="identifier">state_type</span> <span class="special">&</span> <a name="idm45853739474256-bb"></a><span class="identifier">get_current_state</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span></pre></li>
361 <li class="listitem"><pre class="literallayout"><span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a name="idm45853739472720-bb"></a><span class="identifier">get_current_state</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
362 <li class="listitem"><pre class="literallayout"><span class="identifier">state_type</span> <span class="special">&</span> <a name="idm45853739470912-bb"></a><span class="identifier">get_old_state</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span></pre></li>
363 <li class="listitem"><pre class="literallayout"><span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&</span> <a name="idm45853739469376-bb"></a><span class="identifier">get_old_state</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
364 <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idm45853739467568-bb"></a><span class="identifier">toggle_current_state</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span></pre></li>
365 <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> StateIn<span class="special">></span> <span class="keyword">bool</span> <a name="idm45853739466032-bb"></a><span class="identifier">resize_impl</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">StateIn</span> <span class="special">&</span> x<span class="special">)</span><span class="special">;</span></pre></li>
370 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
371 <td align="left"></td>
372 <td align="right"><div class="copyright-footer">Copyright © 2009-2015 Karsten Ahnert and Mario Mulansky<p>
373 Distributed under the Boost Software License, Version 1.0. (See accompanying
374 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
379 <div class="spirit-nav">
380 <a accesskey="p" href="dense_ou_idm45853739592848.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../header/boost/numeric/odeint/stepper/dense_output_runge_kutta_hpp.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../../../header/boost/numeric/odeint/stepper/euler_hpp.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a>