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25 <div class="section">
26 <div class="titlepage"><div><div><h3 class="title">
27 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges"></a><a class="link" href="iterators_and_ranges.html" title="Iterators and Ranges">Iterators
28       and Ranges</a>
29 </h3></div></div></div>
30 <div class="toc"><dl class="toc">
31 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.examples">Examples</a></span></dt>
32 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.const_step_iterator">const_step_iterator</a></span></dt>
33 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.const_step_time_iterator">const_step_time_iterator</a></span></dt>
34 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.adaptive_step_iterator">adaptive_step_iterator</a></span></dt>
35 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.adaptive_step_time_iterator">adaptive_step_time_iterator</a></span></dt>
36 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.n_step_iterator">n_step_iterator</a></span></dt>
37 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.n_step_time_iterator">n_step_time_iterator</a></span></dt>
38 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.times_iterator">times_iterator</a></span></dt>
39 <dt><span class="section"><a href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.times_time_iterator">times_time_iterator</a></span></dt>
40 </dl></div>
41 <div class="section">
42 <div class="titlepage"><div><div><h4 class="title">
43 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.examples"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.examples" title="Examples">Examples</a>
44 </h4></div></div></div>
45 <p>
46           odeint supports iterators that iterate along an approximate solution of
47           an ordinary differential equation. Iterators offer you an alternative to
48           the integrate functions. Furthermore, many of the standard algorithms in
49           the C++ standard library and Boost.Range can be used with the odeint's
50           iterators.
51         </p>
52 <p>
53           Several iterator types are provided, in consistence with the <a class="link" href="integrate_functions.html" title="Integrate functions">integrate
54           functions</a>. Hence there are <code class="computeroutput"><span class="identifier">const_step_iterator</span></code>,
55           <code class="computeroutput"><span class="identifier">adaptive_step_iterator</span></code>,
56           <code class="computeroutput"><span class="identifier">n_step_iterator</span></code> and <code class="computeroutput"><span class="identifier">times_iterator</span></code> -- each of them in two
57           versions: either with only the <code class="computeroutput"><span class="identifier">state</span></code>
58           or with a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span><span class="identifier">state</span><span class="special">,</span><span class="identifier">time</span><span class="special">&gt;</span></code>
59           as value type. They are all single pass iterators. In the following, we
60           show a few examples of how to use those iterators together with std algorithms.
61         </p>
62 <p>
63 </p>
64 <pre class="programlisting"><span class="identifier">runge_kutta4</span><span class="special">&lt;</span> <span class="identifier">state_type</span> <span class="special">&gt;</span> <span class="identifier">stepper</span><span class="special">;</span>
65 <span class="identifier">state_type</span> <span class="identifier">x</span> <span class="special">=</span> <span class="special">{{</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">}};</span>
66 <span class="keyword">double</span> <span class="identifier">res</span> <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">accumulate</span><span class="special">(</span> <span class="identifier">make_const_step_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span> <span class="special">,</span> <span class="identifier">lorenz</span><span class="special">()</span> <span class="special">,</span> <span class="identifier">x</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span> <span class="number">1.0</span> <span class="special">,</span> <span class="number">0.01</span> <span class="special">)</span> <span class="special">,</span>
67                               <span class="identifier">make_const_step_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span> <span class="special">,</span> <span class="identifier">lorenz</span><span class="special">()</span> <span class="special">,</span> <span class="identifier">x</span> <span class="special">)</span> <span class="special">,</span>
68                               <span class="number">0.0</span> <span class="special">,</span>
69                               <span class="special">[](</span> <span class="keyword">double</span> <span class="identifier">sum</span> <span class="special">,</span> <span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&amp;</span><span class="identifier">x</span> <span class="special">)</span> <span class="special">{</span>
70                                   <span class="keyword">return</span> <span class="identifier">sum</span> <span class="special">+</span> <span class="identifier">x</span><span class="special">[</span><span class="number">0</span><span class="special">];</span> <span class="special">}</span> <span class="special">);</span>
71 <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">res</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
72 </pre>
73 <p>
74         </p>
75 <p>
76           In this example all x-values of the solution are accumulated. Note, how
77           dereferencing the iterator gives the current state <code class="computeroutput"><span class="identifier">x</span></code>
78           of the ODE (the second argument of the accumulate lambda). The iterator
79           itself does not occur directly in this example but it is generated by the
80           factory functions <code class="computeroutput"><span class="identifier">make_const_step_iterator_begin</span></code>
81           and <code class="computeroutput"><span class="identifier">make_const_step_iterator_end</span></code>.
82           odeint also supports Boost.Range, that allows to write the above example
83           in a more compact form with the factory function <code class="computeroutput"><span class="identifier">make_const_step_range</span></code>,
84           but now using <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">accumulate</span></code> from __bost_range:
85         </p>
86 <p>
87 </p>
88 <pre class="programlisting"><span class="identifier">runge_kutta4</span><span class="special">&lt;</span> <span class="identifier">state_type</span> <span class="special">&gt;</span> <span class="identifier">stepper</span><span class="special">;</span>
89 <span class="identifier">state_type</span> <span class="identifier">x</span> <span class="special">=</span> <span class="special">{{</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">}};</span>
90 <span class="keyword">double</span> <span class="identifier">res</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">accumulate</span><span class="special">(</span> <span class="identifier">make_const_step_range</span><span class="special">(</span> <span class="identifier">stepper</span> <span class="special">,</span> <span class="identifier">lorenz</span><span class="special">()</span> <span class="special">,</span> <span class="identifier">x</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span> <span class="number">1.0</span> <span class="special">,</span> <span class="number">0.01</span> <span class="special">)</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span>
91                                 <span class="special">[](</span> <span class="keyword">double</span> <span class="identifier">sum</span> <span class="special">,</span> <span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&amp;</span><span class="identifier">x</span> <span class="special">)</span> <span class="special">{</span>
92                                     <span class="keyword">return</span> <span class="identifier">sum</span> <span class="special">+</span> <span class="identifier">x</span><span class="special">[</span><span class="number">0</span><span class="special">];</span> <span class="special">}</span> <span class="special">);</span>
93 <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">res</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
94 </pre>
95 <p>
96         </p>
97 <p>
98           The second iterator type is also a iterator with const step size. But the
99           value type of this iterator consists here of a pair of the time and the
100           state of the solution of the ODE. An example is
101         </p>
102 <p>
103 </p>
104 <pre class="programlisting"><span class="identifier">runge_kutta4</span><span class="special">&lt;</span> <span class="identifier">state_type</span> <span class="special">&gt;</span> <span class="identifier">stepper</span><span class="special">;</span>
105 <span class="identifier">state_type</span> <span class="identifier">x</span> <span class="special">=</span> <span class="special">{{</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">}};</span>
106 <span class="keyword">double</span> <span class="identifier">res</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">accumulate</span><span class="special">(</span> <span class="identifier">make_const_step_time_range</span><span class="special">(</span> <span class="identifier">stepper</span> <span class="special">,</span> <span class="identifier">lorenz</span><span class="special">()</span> <span class="special">,</span> <span class="identifier">x</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span> <span class="number">1.0</span> <span class="special">,</span> <span class="number">0.01</span> <span class="special">)</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span>
107                                 <span class="special">[](</span> <span class="keyword">double</span> <span class="identifier">sum</span> <span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="keyword">const</span> <span class="identifier">state_type</span> <span class="special">&amp;,</span> <span class="keyword">double</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">x</span> <span class="special">)</span> <span class="special">{</span>
108                                     <span class="keyword">return</span> <span class="identifier">sum</span> <span class="special">+</span> <span class="identifier">x</span><span class="special">.</span><span class="identifier">first</span><span class="special">[</span><span class="number">0</span><span class="special">];</span> <span class="special">}</span> <span class="special">);</span>
109 <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">res</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
110 </pre>
111 <p>
112         </p>
113 <p>
114           The factory functions are now <code class="computeroutput"><span class="identifier">make_const_step_time_iterator_begin</span></code>,
115           <code class="computeroutput"><span class="identifier">make_const_step_time_iterator_end</span></code>
116           and <code class="computeroutput"><span class="identifier">make_const_step_time_range</span></code>.
117           Note, how the lambda now expects a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span></code>
118           as this is the value type of the <code class="computeroutput"><span class="identifier">const_step_time_iterator</span></code>'s.
119         </p>
120 <p>
121           Next, we discuss the adaptive iterators which are completely analogous
122           to the const step iterators, but are based on adaptive stepper routines
123           and thus adjust the step size during the iteration. Examples are
124         </p>
125 <p>
126 </p>
127 <pre class="programlisting"><span class="keyword">auto</span> <span class="identifier">stepper</span> <span class="special">=</span> <span class="identifier">make_controlled</span><span class="special">(</span> <span class="number">1.0e-6</span> <span class="special">,</span> <span class="number">1.0e-6</span> <span class="special">,</span> <span class="identifier">runge_kutta_cash_karp54</span><span class="special">&lt;</span> <span class="identifier">state_type</span> <span class="special">&gt;()</span> <span class="special">);</span>
128 <span class="identifier">state_type</span> <span class="identifier">x</span> <span class="special">=</span> <span class="special">{{</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">}};</span>
129 <span class="keyword">double</span> <span class="identifier">res</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">accumulate</span><span class="special">(</span> <span class="identifier">make_adaptive_range</span><span class="special">(</span> <span class="identifier">stepper</span> <span class="special">,</span> <span class="identifier">lorenz</span><span class="special">()</span> <span class="special">,</span> <span class="identifier">x</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span> <span class="number">1.0</span> <span class="special">,</span> <span class="number">0.01</span> <span class="special">)</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span>
130                                 <span class="special">[](</span> <span class="keyword">double</span> <span class="identifier">sum</span> <span class="special">,</span> <span class="keyword">const</span> <span class="identifier">state_type</span><span class="special">&amp;</span> <span class="identifier">x</span> <span class="special">)</span> <span class="special">{</span>
131                                     <span class="keyword">return</span> <span class="identifier">sum</span> <span class="special">+</span> <span class="identifier">x</span><span class="special">[</span><span class="number">0</span><span class="special">];</span> <span class="special">}</span> <span class="special">);</span>
132 <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">res</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
133 </pre>
134 <p>
135         </p>
136 <p>
137 </p>
138 <pre class="programlisting"><span class="keyword">auto</span> <span class="identifier">stepper</span> <span class="special">=</span> <span class="identifier">make_controlled</span><span class="special">(</span> <span class="number">1.0e-6</span> <span class="special">,</span> <span class="number">1.0e-6</span> <span class="special">,</span> <span class="identifier">runge_kutta_cash_karp54</span><span class="special">&lt;</span> <span class="identifier">state_type</span> <span class="special">&gt;()</span> <span class="special">);</span>
139 <span class="identifier">state_type</span> <span class="identifier">x</span> <span class="special">=</span> <span class="special">{{</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">,</span> <span class="number">10.0</span> <span class="special">}};</span>
140 <span class="keyword">double</span> <span class="identifier">res</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">accumulate</span><span class="special">(</span> <span class="identifier">make_adaptive_time_range</span><span class="special">(</span> <span class="identifier">stepper</span> <span class="special">,</span> <span class="identifier">lorenz</span><span class="special">()</span> <span class="special">,</span> <span class="identifier">x</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span> <span class="number">1.0</span> <span class="special">,</span> <span class="number">0.01</span> <span class="special">)</span> <span class="special">,</span> <span class="number">0.0</span> <span class="special">,</span>
141                                 <span class="special">[](</span> <span class="keyword">double</span> <span class="identifier">sum</span> <span class="special">,</span> <span class="keyword">const</span> <span class="identifier">pair</span><span class="special">&lt;</span> <span class="keyword">const</span> <span class="identifier">state_type</span><span class="special">&amp;</span> <span class="special">,</span> <span class="keyword">double</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="identifier">x</span> <span class="special">)</span> <span class="special">{</span>
142                                     <span class="keyword">return</span> <span class="identifier">sum</span> <span class="special">+</span> <span class="identifier">x</span><span class="special">.</span><span class="identifier">first</span><span class="special">[</span><span class="number">0</span><span class="special">];</span> <span class="special">}</span> <span class="special">);</span>
143 <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">res</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
144 </pre>
145 <p>
146         </p>
147 <div class="note"><table border="0" summary="Note">
148 <tr>
149 <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../doc/src/images/note.png"></td>
150 <th align="left">Note</th>
151 </tr>
152 <tr><td align="left" valign="top"><p>
153             'adaptive_iterator<code class="computeroutput"> <span class="keyword">and</span> </code>adaptive_time_iterator'
154             can only be used with <a class="link" href="../concepts/controlled_stepper.html" title="Controlled Stepper">Controlled
155             Stepper</a> or <a class="link" href="../concepts/dense_output_stepper.html" title="Dense Output Stepper">Dense
156             Output Stepper</a>.
157           </p></td></tr>
158 </table></div>
159 <p>
160           In general one can say that iterating over a range of a <code class="computeroutput"><span class="identifier">const_step_iterator</span></code>
161           behaves like an <code class="computeroutput"><span class="identifier">integrate_const</span></code>
162           function call, and similarly for <code class="computeroutput"><span class="identifier">adaptive_iterator</span></code>
163           and <code class="computeroutput"><span class="identifier">integrate_adaptive</span></code>,
164           <code class="computeroutput"><span class="identifier">n_step_iterator</span></code> and <code class="computeroutput"><span class="identifier">integrate_n_steps</span></code>, and finally <code class="computeroutput"><span class="identifier">times_iterator</span></code> and <code class="computeroutput"><span class="identifier">integrate_times</span></code>.
165         </p>
166 <p>
167           Below we list the most important properties of the exisiting iterators:
168         </p>
169 </div>
170 <div class="section">
171 <div class="titlepage"><div><div><h4 class="title">
172 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.const_step_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.const_step_iterator" title="const_step_iterator">const_step_iterator</a>
173 </h4></div></div></div>
174 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
175 <li class="listitem">
176               Definition: <code class="computeroutput"><span class="identifier">const_step_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
177               <span class="special">,</span> <span class="identifier">System</span>
178               <span class="special">,</span> <span class="identifier">State</span>
179               <span class="special">&gt;</span></code>
180             </li>
181 <li class="listitem">
182               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">State</span></code>
183             </li>
184 <li class="listitem">
185               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
186               <code class="computeroutput"><span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span></code>
187             </li>
188 <li class="listitem">
189               Factory functions
190               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
191 <li class="listitem">
192                     <code class="computeroutput"><span class="identifier">make_const_step_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
193                     <span class="special">,</span> <span class="identifier">system</span>
194                     <span class="special">,</span> <span class="identifier">state</span>
195                     <span class="special">,</span> <span class="identifier">t_start</span>
196                     <span class="special">,</span> <span class="identifier">t_end</span>
197                     <span class="special">,</span> <span class="identifier">dt</span>
198                     <span class="special">)</span></code>
199                   </li>
200 <li class="listitem">
201                     <code class="computeroutput"><span class="identifier">make_const_step_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
202                     <span class="special">,</span> <span class="identifier">system</span>
203                     <span class="special">,</span> <span class="identifier">state</span>
204                     <span class="special">)</span></code>
205                   </li>
206 <li class="listitem">
207                     <code class="computeroutput"><span class="identifier">make_const_step_range</span><span class="special">(</span> <span class="identifier">stepper</span>
208                     <span class="special">,</span> <span class="identifier">system</span>
209                     <span class="special">,</span> <span class="identifier">state</span>
210                     <span class="special">,</span> <span class="identifier">t_start</span>
211                     <span class="special">,</span> <span class="identifier">t_end</span>
212                     <span class="special">,</span> <span class="identifier">dt</span>
213                     <span class="special">)</span></code>
214                   </li>
215 </ul></div>
216             </li>
217 <li class="listitem">
218               This stepper works with all steppers fulfilling the Stepper concept
219               or the DenseOutputStepper concept.
220             </li>
221 <li class="listitem">
222               The value of <code class="computeroutput"><span class="identifier">state</span></code>
223               is the current state of the ODE during the iteration.
224             </li>
225 </ul></div>
226 </div>
227 <div class="section">
228 <div class="titlepage"><div><div><h4 class="title">
229 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.const_step_time_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.const_step_time_iterator" title="const_step_time_iterator">const_step_time_iterator</a>
230 </h4></div></div></div>
231 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
232 <li class="listitem">
233               Definition: <code class="computeroutput"><span class="identifier">const_step_time_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
234               <span class="special">,</span> <span class="identifier">System</span>
235               <span class="special">,</span> <span class="identifier">State</span>
236               <span class="special">&gt;</span></code>
237             </li>
238 <li class="listitem">
239               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
240               <span class="identifier">State</span> <span class="special">,</span>
241               <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span></code>
242             </li>
243 <li class="listitem">
244               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
245               <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
246               <span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">,</span> <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span>
247               <span class="keyword">const</span><span class="special">&amp;</span></code>
248             </li>
249 <li class="listitem">
250               Factory functions
251               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
252 <li class="listitem">
253                     <code class="computeroutput"><span class="identifier">make_const_step_time_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
254                     <span class="special">,</span> <span class="identifier">system</span>
255                     <span class="special">,</span> <span class="identifier">state</span>
256                     <span class="special">,</span> <span class="identifier">t_start</span>
257                     <span class="special">,</span> <span class="identifier">t_end</span>
258                     <span class="special">,</span> <span class="identifier">dt</span>
259                     <span class="special">)</span></code>
260                   </li>
261 <li class="listitem">
262                     <code class="computeroutput"><span class="identifier">make_const_step_time_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
263                     <span class="special">,</span> <span class="identifier">system</span>
264                     <span class="special">,</span> <span class="identifier">state</span>
265                     <span class="special">)</span></code>
266                   </li>
267 <li class="listitem">
268                     <code class="computeroutput"><span class="identifier">make_const_step_time_range</span><span class="special">(</span> <span class="identifier">stepper</span>
269                     <span class="special">,</span> <span class="identifier">system</span>
270                     <span class="special">,</span> <span class="identifier">state</span>
271                     <span class="special">,</span> <span class="identifier">t_start</span>
272                     <span class="special">,</span> <span class="identifier">t_end</span>
273                     <span class="special">,</span> <span class="identifier">dt</span>
274                     <span class="special">)</span></code>
275                   </li>
276 </ul></div>
277             </li>
278 <li class="listitem">
279               This stepper works with all steppers fulfilling the Stepper concept
280               or the DenseOutputStepper concept.
281             </li>
282 <li class="listitem">
283               This stepper updates the value of <code class="computeroutput"><span class="identifier">state</span></code>.
284               The value of <code class="computeroutput"><span class="identifier">state</span></code>
285               is the current state of the ODE during the iteration.
286             </li>
287 </ul></div>
288 </div>
289 <div class="section">
290 <div class="titlepage"><div><div><h4 class="title">
291 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.adaptive_step_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.adaptive_step_iterator" title="adaptive_step_iterator">adaptive_step_iterator</a>
292 </h4></div></div></div>
293 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
294 <li class="listitem">
295               Definition: <code class="computeroutput"><span class="identifier">adaptive_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
296               <span class="special">,</span> <span class="identifier">System</span>
297               <span class="special">,</span> <span class="identifier">State</span>
298               <span class="special">&gt;</span></code>
299             </li>
300 <li class="listitem">
301               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">State</span></code>
302             </li>
303 <li class="listitem">
304               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
305               <code class="computeroutput"><span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span></code>
306             </li>
307 <li class="listitem">
308               Factory functions
309               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
310 <li class="listitem">
311                     <code class="computeroutput"><span class="identifier">make_adaptive_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
312                     <span class="special">,</span> <span class="identifier">system</span>
313                     <span class="special">,</span> <span class="identifier">state</span>
314                     <span class="special">,</span> <span class="identifier">t_start</span>
315                     <span class="special">,</span> <span class="identifier">t_end</span>
316                     <span class="special">,</span> <span class="identifier">dt</span>
317                     <span class="special">)</span></code>
318                   </li>
319 <li class="listitem">
320                     <code class="computeroutput"><span class="identifier">make_adaptive_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
321                     <span class="special">,</span> <span class="identifier">system</span>
322                     <span class="special">,</span> <span class="identifier">state</span>
323                     <span class="special">)</span></code>
324                   </li>
325 <li class="listitem">
326                     <code class="computeroutput"><span class="identifier">make_adaptive_range</span><span class="special">(</span> <span class="identifier">stepper</span>
327                     <span class="special">,</span> <span class="identifier">system</span>
328                     <span class="special">,</span> <span class="identifier">state</span>
329                     <span class="special">,</span> <span class="identifier">t_start</span>
330                     <span class="special">,</span> <span class="identifier">t_end</span>
331                     <span class="special">,</span> <span class="identifier">dt</span>
332                     <span class="special">)</span></code>
333                   </li>
334 </ul></div>
335             </li>
336 <li class="listitem">
337               This stepper works with all steppers fulfilling the ControlledStepper
338               concept or the DenseOutputStepper concept.
339             </li>
340 <li class="listitem">
341               For steppers fulfilling the ControlledStepper concept <code class="computeroutput"><span class="identifier">state</span></code> is modified according to the
342               current state of the ODE. For DenseOutputStepper the state is not modified
343               due to performance optimizations, but the steppers itself.
344             </li>
345 </ul></div>
346 </div>
347 <div class="section">
348 <div class="titlepage"><div><div><h4 class="title">
349 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.adaptive_step_time_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.adaptive_step_time_iterator" title="adaptive_step_time_iterator">adaptive_step_time_iterator</a>
350 </h4></div></div></div>
351 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
352 <li class="listitem">
353               Definition: <code class="computeroutput"><span class="identifier">adaptive_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
354               <span class="special">,</span> <span class="identifier">System</span>
355               <span class="special">,</span> <span class="identifier">State</span>
356               <span class="special">&gt;</span></code>
357             </li>
358 <li class="listitem">
359               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
360               <span class="identifier">State</span> <span class="special">,</span>
361               <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span></code>
362             </li>
363 <li class="listitem">
364               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
365               <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
366               <span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">,</span> <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span>
367               <span class="keyword">const</span><span class="special">&amp;</span></code>
368             </li>
369 <li class="listitem">
370               Factory functions
371               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
372 <li class="listitem">
373                     <code class="computeroutput"><span class="identifier">make_adaptive_time_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
374                     <span class="special">,</span> <span class="identifier">system</span>
375                     <span class="special">,</span> <span class="identifier">state</span>
376                     <span class="special">,</span> <span class="identifier">t_start</span>
377                     <span class="special">,</span> <span class="identifier">t_end</span>
378                     <span class="special">,</span> <span class="identifier">dt</span>
379                     <span class="special">)</span></code>
380                   </li>
381 <li class="listitem">
382                     <code class="computeroutput"><span class="identifier">make_adaptive_time_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
383                     <span class="special">,</span> <span class="identifier">system</span>
384                     <span class="special">,</span> <span class="identifier">state</span>
385                     <span class="special">)</span></code>
386                   </li>
387 <li class="listitem">
388                     <code class="computeroutput"><span class="identifier">make_adaptive_time_range</span><span class="special">(</span> <span class="identifier">stepper</span>
389                     <span class="special">,</span> <span class="identifier">system</span>
390                     <span class="special">,</span> <span class="identifier">state</span>
391                     <span class="special">,</span> <span class="identifier">t_start</span>
392                     <span class="special">,</span> <span class="identifier">t_end</span>
393                     <span class="special">,</span> <span class="identifier">dt</span>
394                     <span class="special">)</span></code>
395                   </li>
396 </ul></div>
397             </li>
398 <li class="listitem">
399               This stepper works with all steppers fulfilling the ControlledStepper
400               concept or the DenseOutputStepper concept.
401             </li>
402 <li class="listitem">
403               For steppers fulfilling the ControlledStepper concept <code class="computeroutput"><span class="identifier">state</span></code> is modified according to the
404               current state of the ODE. For DenseOutputStepper the state is not modified
405               due to performance optimizations, but the stepper itself.
406             </li>
407 </ul></div>
408 </div>
409 <div class="section">
410 <div class="titlepage"><div><div><h4 class="title">
411 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.n_step_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.n_step_iterator" title="n_step_iterator">n_step_iterator</a>
412 </h4></div></div></div>
413 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
414 <li class="listitem">
415               Definition: <code class="computeroutput"><span class="identifier">n_step_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
416               <span class="special">,</span> <span class="identifier">System</span>
417               <span class="special">,</span> <span class="identifier">State</span>
418               <span class="special">&gt;</span></code>
419             </li>
420 <li class="listitem">
421               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">State</span></code>
422             </li>
423 <li class="listitem">
424               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
425               <code class="computeroutput"><span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span></code>
426             </li>
427 <li class="listitem">
428               Factory functions
429               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
430 <li class="listitem">
431                     <code class="computeroutput"><span class="identifier">make_n_step_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
432                     <span class="special">,</span> <span class="identifier">system</span>
433                     <span class="special">,</span> <span class="identifier">state</span>
434                     <span class="special">,</span> <span class="identifier">t_start</span>
435                     <span class="special">,</span> <span class="identifier">dt</span>
436                     <span class="special">,</span> <span class="identifier">num_of_steps</span>
437                     <span class="special">)</span></code>
438                   </li>
439 <li class="listitem">
440                     <code class="computeroutput"><span class="identifier">make_n_step_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
441                     <span class="special">,</span> <span class="identifier">system</span>
442                     <span class="special">,</span> <span class="identifier">state</span>
443                     <span class="special">)</span></code>
444                   </li>
445 <li class="listitem">
446                     <code class="computeroutput"><span class="identifier">make_n_step_range</span><span class="special">(</span> <span class="identifier">stepper</span>
447                     <span class="special">,</span> <span class="identifier">system</span>
448                     <span class="special">,</span> <span class="identifier">state</span>
449                     <span class="special">,</span> <span class="identifier">t_start</span>
450                     <span class="special">,</span> <span class="identifier">dt</span>
451                     <span class="special">,</span> <span class="identifier">num_of_steps</span>
452                     <span class="special">)</span></code>
453                   </li>
454 </ul></div>
455             </li>
456 <li class="listitem">
457               This stepper works with all steppers fulfilling the Stepper concept
458               or the DenseOutputStepper concept.
459             </li>
460 <li class="listitem">
461               The value of <code class="computeroutput"><span class="identifier">state</span></code>
462               is the current state of the ODE during the iteration.
463             </li>
464 </ul></div>
465 </div>
466 <div class="section">
467 <div class="titlepage"><div><div><h4 class="title">
468 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.n_step_time_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.n_step_time_iterator" title="n_step_time_iterator">n_step_time_iterator</a>
469 </h4></div></div></div>
470 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
471 <li class="listitem">
472               Definition: <code class="computeroutput"><span class="identifier">n_step_time_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
473               <span class="special">,</span> <span class="identifier">System</span>
474               <span class="special">,</span> <span class="identifier">State</span>
475               <span class="special">&gt;</span></code>
476             </li>
477 <li class="listitem">
478               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
479               <span class="identifier">State</span> <span class="special">,</span>
480               <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span></code>
481             </li>
482 <li class="listitem">
483               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
484               <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
485               <span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">,</span> <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span>
486               <span class="keyword">const</span><span class="special">&amp;</span></code>
487             </li>
488 <li class="listitem">
489               Factory functions
490               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
491 <li class="listitem">
492                     <code class="computeroutput"><span class="identifier">make_n_step_time_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
493                     <span class="special">,</span> <span class="identifier">system</span>
494                     <span class="special">,</span> <span class="identifier">state</span>
495                     <span class="special">,</span> <span class="identifier">t_start</span>
496                     <span class="special">,</span> <span class="identifier">dt</span>
497                     <span class="special">,</span> <span class="identifier">num_of_steps</span>
498                     <span class="special">)</span></code>
499                   </li>
500 <li class="listitem">
501                     <code class="computeroutput"><span class="identifier">make_n_step_time_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
502                     <span class="special">,</span> <span class="identifier">system</span>
503                     <span class="special">,</span> <span class="identifier">state</span>
504                     <span class="special">)</span></code>
505                   </li>
506 <li class="listitem">
507                     <code class="computeroutput"><span class="identifier">make_n_step_time_range</span><span class="special">(</span> <span class="identifier">stepper</span>
508                     <span class="special">,</span> <span class="identifier">system</span>
509                     <span class="special">,</span> <span class="identifier">state</span>
510                     <span class="special">,</span> <span class="identifier">t_start</span>
511                     <span class="special">,</span> <span class="identifier">dt</span>
512                     <span class="special">,</span> <span class="identifier">num_of_steps</span>
513                     <span class="special">)</span></code>
514                   </li>
515 </ul></div>
516             </li>
517 <li class="listitem">
518               This stepper works with all steppers fulfilling the Stepper concept
519               or the DenseOutputStepper concept.
520             </li>
521 <li class="listitem">
522               This stepper updates the value of <code class="computeroutput"><span class="identifier">state</span></code>.
523               The value of <code class="computeroutput"><span class="identifier">state</span></code>
524               is the current state of the ODE during the iteration.
525             </li>
526 </ul></div>
527 </div>
528 <div class="section">
529 <div class="titlepage"><div><div><h4 class="title">
530 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.times_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.times_iterator" title="times_iterator">times_iterator</a>
531 </h4></div></div></div>
532 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
533 <li class="listitem">
534               Definition: <code class="computeroutput"><span class="identifier">times_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
535               <span class="special">,</span> <span class="identifier">System</span>
536               <span class="special">,</span> <span class="identifier">State</span>
537               <span class="special">,</span> <span class="identifier">TimeIterator</span>
538               <span class="special">&gt;</span></code>
539             </li>
540 <li class="listitem">
541               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">State</span></code>
542             </li>
543 <li class="listitem">
544               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
545               <code class="computeroutput"><span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span></code>
546             </li>
547 <li class="listitem">
548               Factory functions
549               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
550 <li class="listitem">
551                     <code class="computeroutput"><span class="identifier">make_times_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
552                     <span class="special">,</span> <span class="identifier">system</span>
553                     <span class="special">,</span> <span class="identifier">state</span>
554                     <span class="special">,</span> <span class="identifier">t_start</span>
555                     <span class="special">,</span> <span class="identifier">t_end</span>
556                     <span class="special">,</span> <span class="identifier">dt</span>
557                     <span class="special">)</span></code>
558                   </li>
559 <li class="listitem">
560                     <code class="computeroutput"><span class="identifier">make_times_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
561                     <span class="special">,</span> <span class="identifier">system</span>
562                     <span class="special">,</span> <span class="identifier">state</span>
563                     <span class="special">)</span></code>
564                   </li>
565 <li class="listitem">
566                     <code class="computeroutput"><span class="identifier">make_times_range</span><span class="special">(</span> <span class="identifier">stepper</span>
567                     <span class="special">,</span> <span class="identifier">system</span>
568                     <span class="special">,</span> <span class="identifier">state</span>
569                     <span class="special">,</span> <span class="identifier">t_start</span>
570                     <span class="special">,</span> <span class="identifier">t_end</span>
571                     <span class="special">,</span> <span class="identifier">dt</span>
572                     <span class="special">)</span></code>
573                   </li>
574 </ul></div>
575             </li>
576 <li class="listitem">
577               This stepper works with all steppers fulfilling the Stepper concept,
578               the ControlledStepper concept or the DenseOutputStepper concept.
579             </li>
580 <li class="listitem">
581               The value of <code class="computeroutput"><span class="identifier">state</span></code>
582               is the current state of the ODE during the iteration.
583             </li>
584 </ul></div>
585 </div>
586 <div class="section">
587 <div class="titlepage"><div><div><h4 class="title">
588 <a name="boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.times_time_iterator"></a><a class="link" href="iterators_and_ranges.html#boost_numeric_odeint.odeint_in_detail.iterators_and_ranges.times_time_iterator" title="times_time_iterator">times_time_iterator</a>
589 </h4></div></div></div>
590 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
591 <li class="listitem">
592               Definition: <code class="computeroutput"><span class="identifier">times_time_iterator</span><span class="special">&lt;</span> <span class="identifier">Stepper</span>
593               <span class="special">,</span> <span class="identifier">System</span>
594               <span class="special">,</span> <span class="identifier">State</span>
595               <span class="special">,</span> <span class="identifier">TimeIterator</span><span class="special">&gt;</span></code>
596             </li>
597 <li class="listitem">
598               <code class="computeroutput"><span class="identifier">value_type</span></code> is <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
599               <span class="identifier">State</span> <span class="special">,</span>
600               <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span></code>
601             </li>
602 <li class="listitem">
603               <code class="computeroutput"><span class="identifier">reference_type</span></code> is
604               <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span>
605               <span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="special">,</span> <span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">time_type</span> <span class="special">&gt;</span>
606               <span class="keyword">const</span><span class="special">&amp;</span></code>
607             </li>
608 <li class="listitem">
609               Factory functions
610               <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
611 <li class="listitem">
612                     <code class="computeroutput"><span class="identifier">make_times_time_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span>
613                     <span class="special">,</span> <span class="identifier">system</span>
614                     <span class="special">,</span> <span class="identifier">state</span>
615                     <span class="special">,</span> <span class="identifier">t_start</span>
616                     <span class="special">,</span> <span class="identifier">t_end</span>
617                     <span class="special">,</span> <span class="identifier">dt</span>
618                     <span class="special">)</span></code>
619                   </li>
620 <li class="listitem">
621                     <code class="computeroutput"><span class="identifier">make_times_time_step_iterator_end</span><span class="special">(</span> <span class="identifier">stepper</span>
622                     <span class="special">,</span> <span class="identifier">system</span>
623                     <span class="special">,</span> <span class="identifier">state</span>
624                     <span class="special">)</span></code>
625                   </li>
626 <li class="listitem">
627                     <code class="computeroutput"><span class="identifier">make_times_time_range</span><span class="special">(</span> <span class="identifier">stepper</span>
628                     <span class="special">,</span> <span class="identifier">system</span>
629                     <span class="special">,</span> <span class="identifier">state</span>
630                     <span class="special">,</span> <span class="identifier">t_start</span>
631                     <span class="special">,</span> <span class="identifier">t_end</span>
632                     <span class="special">,</span> <span class="identifier">dt</span>
633                     <span class="special">)</span></code>
634                   </li>
635 </ul></div>
636             </li>
637 <li class="listitem">
638               This stepper works with all steppers fulfilling the Stepper concept,
639               the ControlledStepper concept or the DenseOutputStepper concept.
640             </li>
641 <li class="listitem">
642               This stepper updates the value of <code class="computeroutput"><span class="identifier">state</span></code>.
643               The value of <code class="computeroutput"><span class="identifier">state</span></code>
644               is the current state of the ODE during the iteration.
645             </li>
646 </ul></div>
647 </div>
648 </div>
649 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
650 <td align="left"></td>
651 <td align="right"><div class="copyright-footer">Copyright &#169; 2009-2012 Karsten
652       Ahnert and Mario Mulansky<p>
653         Distributed under the Boost Software License, Version 1.0. (See accompanying
654         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>)
655       </p>
656 </div></td>
657 </tr></table>
658 <hr>
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