1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Interval</title> 5<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../index.html" title="Chapter 1. Boost.Icl"> 8<link rel="up" href="../examples.html" title="Examples"> 9<link rel="prev" href="party.html" title="Party"> 10<link rel="next" href="dynamic_interval.html" title="Dynamic interval"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="party.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../examples.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="dynamic_interval.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 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 class="itemizedlist" style="list-style-type: disc; "> 34<li class="listitem"> 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 class="listitem"> 40 The examples uses open and closed intervals bounds. 41 </li> 42<li class="listitem"> 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<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> 51<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> 52<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> 53 54<span class="comment">// Dynamically bounded intervals</span> 55<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> 56<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> 57 58<span class="comment">// Statically bounded intervals</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">right_open_interval</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 60<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> 61<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> 62<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> 63 64<span class="preprocessor">#include</span> <span class="string">"../toytime.hpp"</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">rational</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 66 67<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span> 68<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span> 69<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> 70 71<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> 72<span class="special">{</span> 73 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">">>Interval Container Library: Sample interval.cpp <<\n"</span><span class="special">;</span> 74 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----------------------------------------------------\n"</span><span class="special">;</span> 75 76 <span class="comment">// Class template discrete_interval can be used for discrete data types</span> 77 <span class="comment">// like integers, date and time and other types that have a least steppable</span> 78 <span class="comment">// unit.</span> 79 <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> 80 <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> 81 82 <span class="comment">// Class template continuous_interval can be used for continuous data types</span> 83 <span class="comment">// like double, boost::rational or strings.</span> 84 <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> 85 <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> 86 <span class="comment">//interval_bounds::right_open() is default</span> 87 <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> 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="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> 89 90 <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> 91 <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> 92 <span class="identifier">interval_bounds</span><span class="special">::</span><span class="identifier">open</span><span class="special">());</span> 93 94 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Dynamically bounded intervals:\n"</span><span class="special">;</span> 95 <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> 96 <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> 97 <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> 98 <span class="special"><<</span> <span class="string">" contain sqrt(2)"</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<string>: "</span> <span class="special"><<</span> <span class="identifier">city_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">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> 101 <span class="special"><<</span> <span class="string">" contain 'Barcelona'"</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">"Berlin"</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 'Berlin'"</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">" 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> 106 107 <span class="comment">// There are statically bounded interval types with fixed interval borders</span> 108 <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> 109 <span class="comment">// right_open_intervals are recommended.</span> 110 <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> 111 <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> 112 <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> 113 114 <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> 115 <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> 116 117 <span class="comment">// This middle third of the unit interval [0,1)</span> 118 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"Statically bounded interval:\n"</span><span class="special">;</span> 119 <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> 120 121 <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> 122<span class="special">}</span> 123 124<span class="comment">// Program output:</span> 125 126<span class="comment">//>>Interval Container Library: Sample interval.cpp <<</span> 127<span class="comment">//----------------------------------------------------</span> 128<span class="comment">//Dynamically bounded intervals</span> 129<span class="comment">// discrete_interval<int>: [3,7]</span> 130<span class="comment">//continuous_interval<double>: [0.707107,1.41421) does NOT contain sqrt(2)</span> 131<span class="comment">//continuous_interval<string>: (Barcelona,Boston] does NOT contain 'Barcelona'</span> 132<span class="comment">//continuous_interval<string>: (Barcelona,Boston] does contain 'Berlin'</span> 133<span class="comment">// discrete_interval<Time>: (mon:08:30,mon:17:20)</span> 134<span class="comment">//</span> 135<span class="comment">//Statically bounded interval</span> 136<span class="comment">//right_open_interval<rational<int>>: [1/3,2/3)</span> 137</pre> 138<p> 139 </p> 140</div> 141<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 142<td align="left"></td> 143<td align="right"><div class="copyright-footer">Copyright © 2007-2010 Joachim 144 Faulhaber<br>Copyright © 1999-2006 Cortex Software 145 GmbH<p> 146 Distributed under the Boost Software License, Version 1.0. (See accompanying 147 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>) 148 </p> 149</div></td> 150</tr></table> 151<hr> 152<div class="spirit-nav"> 153<a accesskey="p" href="party.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../examples.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="dynamic_interval.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 154</div> 155</body> 156</html> 157
