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| 24 | </div> | |
| 25 | <div class="section boost_icl_examples_interval" lang="en"> | |
| 26 | <div class="titlepage"><div><div><h3 class="title"> | |
| 27 | <a name="boost_icl.examples.interval"></a><a class="link" href="interval.html" title="Interval">Interval</a> | |
| 28 | </h3></div></div></div> | |
| 29 | <p> | |
| 30 | Example <span class="bold"><strong>interval</strong></span> shows some basic functionality | |
| 31 | of <code class="computeroutput"><a class="link" href="../../boost/icl/interval.html" title="Struct template interval">intervals</a></code>. | |
| 32 | </p> | |
| 33 | <div class="itemizedlist"><ul type="disc"> | |
| 34 | <li> | |
| 35 | Different instances of <code class="computeroutput"><a class="link" href="../../boost/icl/interval.html" title="Struct template interval">intervals</a></code> | |
| 36 | for integral (<code class="literal">int, Time</code>) and continuous types (<code class="literal">double, | |
| 37 | std::string</code>) are used. | |
| 38 | </li> | |
| 39 | <li> | |
| 40 | The examples uses open and closed intervals bounds. | |
| 41 | </li> | |
| 42 | <li> | |
| 43 | Some borderline functions calls on open interval borders are tested e.g.: | |
| 44 | <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> | |
| 45 | <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> | |
| 46 | </li> | |
| 47 | </ul></div> | |
| 48 | <p> | |
| 49 | </p> | |
| 50 | <p> | |
| 51 | ||
| 52 | </p> | |
| 53 | <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> | |
| 54 | <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> | |
| 55 | <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> | |
| 56 | ||
| 57 | <span class="comment">// Dynamically bounded intervals | |
| 58 | </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> | |
| 59 | <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> | |
| 60 | ||
| 61 | <span class="comment">// Statically bounded intervals | |
| 62 | </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> | |
| 63 | <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> | |
| 64 | <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> | |
| 65 | <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> | |
| 66 | ||
| 67 | <span class="preprocessor">#include</span> <span class="string">"../toytime.hpp"</span> | |
| 68 | <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> | |
| 69 | ||
| 70 | <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span> | |
| 71 | <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span> | |
| 72 | <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> | |
| 73 | ||
| 74 | <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> | |
| 75 | <span class="special">{</span> | |
| 76 | <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">">>Interval Container Library: Sample interval.cpp <<\n"</span><span class="special">;</span> | |
| 77 | <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----------------------------------------------------\n"</span><span class="special">;</span> | |
| 78 | ||
| 79 | <span class="comment">// Class template discrete_interval can be used for discrete data types | |
| 80 | </span> <span class="comment">// like integers, date and time and other types that have a least steppable | |
| 81 | </span> <span class="comment">// unit. | |
| 82 | </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> | |
| 83 | <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> | |
| 84 | ||
| 85 | <span class="comment">// Class template continuous_interval can be used for continuous data types | |
| 86 | </span> <span class="comment">// like double, boost::rational or strings. | |
| 87 | </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> | |
| 88 | <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> | |
| 89 | <span class="comment">//interval_bounds::right_open() is default | |
| 90 | </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> | |
| 91 | <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> | |
| 92 | ||
| 93 | <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> | |
| 94 | <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> | |
| 95 | <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">open</span><span class="special">());</span> | |
| 96 | ||
| 97 | <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Dynamically bounded intervals:\n"</span><span class="special">;</span> | |
| 98 | <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> | |
| 99 | <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> | |
| 100 | <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> | |
| 101 | <span class="special"><<</span> <span class="string">" contain sqrt(2)"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> | |
| 102 | <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> | |
| 103 | <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> | |
| 104 | <span class="special"><<</span> <span class="string">" contain 'Barcelona'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> | |
| 105 | <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> | |
| 106 | <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> | |
| 107 | <span class="special"><<</span> <span class="string">" contain 'Berlin'"</span> <span class="special"><<</span> <span class="identifier">endl</span><span class="special">;</span> | |
| 108 | <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> | |
| 109 | ||
| 110 | <span class="comment">// There are statically bounded interval types with fixed interval borders | |
| 111 | </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 | |
| 112 | </span> <span class="comment">// right_open_intervals are recommended. | |
| 113 | </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 | |
| 114 | </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 | |
| 115 | </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. | |
| 116 | </span> | |
| 117 | <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> | |
| 118 | <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> | |
| 119 | ||
| 120 | <span class="comment">// This middle third of the unit interval [0,1) | |
| 121 | </span> <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Statically bounded interval:\n"</span><span class="special">;</span> | |
| 122 | <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> | |
| 123 | ||
| 124 | <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> | |
| 125 | <span class="special">}</span> | |
| 126 | ||
| 127 | <span class="comment">// Program output: | |
| 128 | </span> | |
| 129 | <span class="comment">//>>Interval Container Library: Sample interval.cpp << | |
| 130 | </span><span class="comment">//---------------------------------------------------- | |
| 131 | </span><span class="comment">//Dynamically bounded intervals | |
| 132 | </span><span class="comment">// discrete_interval<int>: [3,7] | |
| 133 | </span><span class="comment">//continuous_interval<double>: [0.707107,1.41421) does NOT contain sqrt(2) | |
| 134 | </span><span class="comment">//continuous_interval<string>: (Barcelona,Boston] does NOT contain 'Barcelona' | |
| 135 | </span><span class="comment">//continuous_interval<string>: (Barcelona,Boston] does contain 'Berlin' | |
| 136 | </span><span class="comment">// discrete_interval<Time>: (mon:08:30,mon:17:20) | |
| 137 | </span><span class="comment">// | |
| 138 | </span><span class="comment">//Statically bounded interval | |
| 139 | </span><span class="comment">//right_open_interval<rational<int>>: [1/3,2/3) | |
| 140 | </span> | |
| 141 | </pre> | |
| 142 | <p> | |
| 143 | </p> | |
| 144 | <p> | |
| 145 | </p> | |
| 146 | </div> | |
| 147 | <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> | |
| 148 | <td align="left"></td> | |
| 149 | <td align="right"><div class="copyright-footer">Copyright © 2007 -2010 Joachim Faulhaber<br>Copyright © 1999 -2006 Cortex Software GmbH<p> | |
| 150 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 151 | 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>) | |
| 152 | </p> | |
| 153 | </div></td> | |
| 154 | </tr></table> | |
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