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| <div class="section boost_icl_examples_interval" lang="en"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_icl.examples.interval"></a><a class="link" href="interval.html" title="Interval">Interval</a> |
| </h3></div></div></div> |
| <p> |
| Example <span class="bold"><strong>interval</strong></span> shows some basic functionality |
| of <code class="computeroutput"><a class="link" href="../../boost/icl/interval.html" title="Struct template interval">intervals</a></code>. |
| </p> |
| <div class="itemizedlist"><ul type="disc"> |
| <li> |
| Different instances of <code class="computeroutput"><a class="link" href="../../boost/icl/interval.html" title="Struct template interval">intervals</a></code> |
| for integral (<code class="literal">int, Time</code>) and continuous types (<code class="literal">double, |
| std::string</code>) are used. |
| </li> |
| <li> |
| The examples uses open and closed intervals bounds. |
| </li> |
| <li> |
| Some borderline functions calls on open interval borders are tested e.g.: |
| <code class="computeroutput"><span class="identifier">interval</span><span class="special"><</span><span class="keyword">double</span><span class="special">>::</span><span class="identifier">rightopen</span><span class="special">(</span><span class="number">1</span><span class="special">/</span><span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">),</span> |
| <span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">)).</span><span class="identifier">contains</span><span class="special">(</span><span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">));</span></code> |
| </li> |
| </ul></div> |
| <p> |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">math</span><span class="special">.</span><span class="identifier">h</span><span class="special">></span> |
| |
| <span class="comment">// Dynamically bounded intervals |
| </span><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">discrete_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">continuous_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| |
| <span class="comment">// Statically bounded intervals |
| </span><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">right_open_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">left_open_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">closed_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">open_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| |
| <span class="preprocessor">#include</span> <span class="string">"../toytime.hpp"</span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">icl</span><span class="special">/</span><span class="identifier">rational</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| |
| <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span> |
| <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span> |
| <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">icl</span><span class="special">;</span> |
| |
| <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> |
| <span class="special">{</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">">>Interval Container Library: Sample interval.cpp <<\n"</span><span class="special">;</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----------------------------------------------------\n"</span><span class="special">;</span> |
| |
| <span class="comment">// Class template discrete_interval can be used for discrete data types |
| </span> <span class="comment">// like integers, date and time and other types that have a least steppable |
| </span> <span class="comment">// unit. |
| </span> <span class="identifier">discrete_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="identifier">int_interval</span> |
| <span class="special">=</span> <span class="identifier">construct</span><span class="special"><</span><span class="identifier">discrete_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>(</span><span class="number">3</span><span class="special">,</span> <span class="number">7</span><span class="special">,</span> <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">closed</span><span class="special">());</span> |
| |
| <span class="comment">// Class template continuous_interval can be used for continuous data types |
| </span> <span class="comment">// like double, boost::rational or strings. |
| </span> <span class="identifier">continuous_interval</span><span class="special"><</span><span class="keyword">double</span><span class="special">></span> <span class="identifier">sqrt_interval</span> |
| <span class="special">=</span> <span class="identifier">construct</span><span class="special"><</span><span class="identifier">continuous_interval</span><span class="special"><</span><span class="keyword">double</span><span class="special">></span> <span class="special">>(</span><span class="number">1</span><span class="special">/</span><span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">),</span> <span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">));</span> |
| <span class="comment">//interval_bounds::right_open() is default |
| </span> <span class="identifier">continuous_interval</span><span class="special"><</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">city_interval</span> |
| <span class="special">=</span> <span class="identifier">construct</span><span class="special"><</span><span class="identifier">continuous_interval</span><span class="special"><</span><span class="identifier">string</span><span class="special">></span> <span class="special">>(</span><span class="string">"Barcelona"</span><span class="special">,</span> <span class="string">"Boston"</span><span class="special">,</span> <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">left_open</span><span class="special">());</span> |
| |
| <span class="identifier">discrete_interval</span><span class="special"><</span><span class="identifier">Time</span><span class="special">></span> <span class="identifier">time_interval</span> |
| <span class="special">=</span> <span class="identifier">construct</span><span class="special"><</span><span class="identifier">discrete_interval</span><span class="special"><</span><span class="identifier">Time</span><span class="special">></span> <span class="special">>(</span><span class="identifier">Time</span><span class="special">(</span><span class="identifier">monday</span><span class="special">,</span><span class="number">8</span><span class="special">,</span><span class="number">30</span><span class="special">),</span> <span class="identifier">Time</span><span class="special">(</span><span class="identifier">monday</span><span class="special">,</span><span class="number">17</span><span class="special">,</span><span class="number">20</span><span class="special">),</span> |
| <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">open</span><span class="special">());</span> |
| |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Dynamically bounded intervals:\n"</span><span class="special">;</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">" discrete_interval<int>: "</span> <span class="special"><<</span> <span class="identifier">int_interval</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"continuous_interval<double>: "</span> <span class="special"><<</span> <span class="identifier">sqrt_interval</span> <span class="special"><<</span> <span class="string">" does "</span> |
| <span class="special"><<</span> <span class="identifier">string</span><span class="special">(</span><span class="identifier">contains</span><span class="special">(</span><span class="identifier">sqrt_interval</span><span class="special">,</span> <span class="identifier">sqrt</span><span class="special">(</span><span class="number">2.0</span><span class="special">))?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span> |
| <span class="special"><<</span> <span class="string">" contain sqrt(2)"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"continuous_interval<string>: "</span> <span class="special"><<</span> <span class="identifier">city_interval</span> <span class="special"><<</span> <span class="string">" does "</span> |
| <span class="special"><<</span> <span class="identifier">string</span><span class="special">(</span><span class="identifier">contains</span><span class="special">(</span><span class="identifier">city_interval</span><span class="special">,</span><span class="string">"Barcelona"</span><span class="special">)?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span> |
| <span class="special"><<</span> <span class="string">" contain 'Barcelona'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"continuous_interval<string>: "</span> <span class="special"><<</span> <span class="identifier">city_interval</span> <span class="special"><<</span> <span class="string">" does "</span> |
| <span class="special"><<</span> <span class="identifier">string</span><span class="special">(</span><span class="identifier">contains</span><span class="special">(</span><span class="identifier">city_interval</span><span class="special">,</span> <span class="string">"Berlin"</span><span class="special">)?</span><span class="string">""</span><span class="special">:</span><span class="string">"NOT"</span><span class="special">)</span> |
| <span class="special"><<</span> <span class="string">" contain 'Berlin'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">" discrete_interval<Time>: "</span> <span class="special"><<</span> <span class="identifier">time_interval</span> <span class="special"><<</span> <span class="string">"\n\n"</span><span class="special">;</span> |
| |
| <span class="comment">// There are statically bounded interval types with fixed interval borders |
| </span> <span class="identifier">right_open_interval</span><span class="special"><</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">fix_interval1</span><span class="special">;</span> <span class="comment">// You will probably use one kind of static intervals |
| </span> <span class="comment">// right_open_intervals are recommended. |
| </span> <span class="identifier">closed_interval</span><span class="special"><</span><span class="keyword">unsigned</span> <span class="keyword">int</span><span class="special">></span> <span class="identifier">fix_interval2</span><span class="special">;</span> <span class="comment">// ... static closed, left_open and open intervals |
| </span> <span class="identifier">left_open_interval</span><span class="special"><</span><span class="keyword">float</span><span class="special">></span> <span class="identifier">fix_interval3</span><span class="special">;</span> <span class="comment">// are implemented for sake of completeness but |
| </span> <span class="identifier">open_interval</span><span class="special"><</span><span class="keyword">short</span><span class="special">></span> <span class="identifier">fix_interval4</span><span class="special">;</span> <span class="comment">// are of minor practical importance. |
| </span> |
| <span class="identifier">right_open_interval</span><span class="special"><</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">></span> <span class="identifier">range1</span><span class="special">(</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">>(</span><span class="number">0</span><span class="special">,</span><span class="number">1</span><span class="special">),</span> <span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">>(</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">));</span> |
| <span class="identifier">right_open_interval</span><span class="special"><</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">></span> <span class="identifier">range2</span><span class="special">(</span><span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">>(</span><span class="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">),</span> <span class="identifier">rational</span><span class="special"><</span><span class="keyword">int</span><span class="special">>(</span><span class="number">1</span><span class="special">,</span><span class="number">1</span><span class="special">));</span> |
| |
| <span class="comment">// This middle third of the unit interval [0,1) |
| </span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Statically bounded interval:\n"</span><span class="special">;</span> |
| <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"right_open_interval<rational<int>>: "</span> <span class="special"><<</span> <span class="special">(</span><span class="identifier">range1</span> <span class="special">&</span> <span class="identifier">range2</span><span class="special">)</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> |
| |
| <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> |
| <span class="special">}</span> |
| |
| <span class="comment">// Program output: |
| </span> |
| <span class="comment">//>>Interval Container Library: Sample interval.cpp << |
| </span><span class="comment">//---------------------------------------------------- |
| </span><span class="comment">//Dynamically bounded intervals |
| </span><span class="comment">// discrete_interval<int>: [3,7] |
| </span><span class="comment">//continuous_interval<double>: [0.707107,1.41421) does NOT contain sqrt(2) |
| </span><span class="comment">//continuous_interval<string>: (Barcelona,Boston] does NOT contain 'Barcelona' |
| </span><span class="comment">//continuous_interval<string>: (Barcelona,Boston] does contain 'Berlin' |
| </span><span class="comment">// discrete_interval<Time>: (mon:08:30,mon:17:20) |
| </span><span class="comment">// |
| </span><span class="comment">//Statically bounded interval |
| </span><span class="comment">//right_open_interval<rational<int>>: [1/3,2/3) |
| </span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| </p> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2007 -2010 Joachim Faulhaber<br>Copyright © 1999 -2006 Cortex Software GmbH<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 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>) |
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