1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Static 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="dynamic_interval.html" title="Dynamic interval"> 10<link rel="next" href="interval_container.html" title="Interval container"> 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="dynamic_interval.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="interval_container.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.static_interval"></a><a class="link" href="static_interval.html" title="Static interval">Static interval</a> 28</h3></div></div></div> 29<p> 30</p> 31<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> 32<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> 33<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> 34<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">is_same</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 35 36<span class="comment">// We can change the library default for the interval types by defining </span> 37<span class="preprocessor">#define</span> <span class="identifier">BOOST_ICL_USE_STATIC_BOUNDED_INTERVALS</span> 38<span class="comment">// prior to other inluces from the icl.</span> 39<span class="comment">// The interval type that is automatically used with interval</span> 40<span class="comment">// containers then is the statically bounded right_open_interval.</span> 41 42<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">interval_set</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 43<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">split_interval_set</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 44<span class="comment">// The statically bounded interval type 'right_open_interval'</span> 45<span class="comment">// is indirectly included via interval containers.</span> 46 47 48<span class="preprocessor">#include</span> <span class="string">"../toytime.hpp"</span> 49<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> 50 51<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span> 52<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span> 53<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> 54 55<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> 56<span class="special">{</span> 57 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">">> Interval Container Library: Sample static_interval.cpp <<\n"</span><span class="special">;</span> 58 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"------------------------------------------------------------\n"</span><span class="special">;</span> 59 60 <span class="comment">// Statically bounded intervals are the user defined library default for </span> 61 <span class="comment">// interval parameters in interval containers now.</span> 62 <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span> 63 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special"><</span> <span class="identifier">interval_set</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">interval_type</span> 64 <span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span> 65 <span class="special">));</span> 66 67 <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span> 68 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special"><</span> <span class="identifier">interval_set</span><span class="special"><</span><span class="keyword">float</span><span class="special">>::</span><span class="identifier">interval_type</span> 69 <span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special"><</span><span class="keyword">float</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span> 70 <span class="special">));</span> 71 72 <span class="comment">// As we can see the library default both for discrete and continuous</span> 73 <span class="comment">// domain_types T is 'right_open_interval<T>'.</span> 74 <span class="comment">// The user defined library default for intervals is also available via </span> 75 <span class="comment">// the template 'interval':</span> 76 <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span> 77 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special"><</span> <span class="identifier">interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">type</span> 78 <span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">></span> <span class="special">>::</span><span class="identifier">value</span> 79 <span class="special">));</span> 80 81 <span class="comment">// Again we are declaring and initializing the four test intervals that have been used</span> 82 <span class="comment">// in the example 'interval' and 'dynamic_interval'</span> 83 <span class="identifier">interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">int_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="keyword">int</span><span class="special">>::</span><span class="identifier">right_open</span><span class="special">(</span><span class="number">3</span><span class="special">,</span> <span class="number">8</span><span class="special">);</span> <span class="comment">// shifted the upper bound</span> 84 <span class="identifier">interval</span><span class="special"><</span><span class="keyword">double</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">sqrt_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="keyword">double</span><span class="special">>::</span><span class="identifier">right_open</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> 85 86 <span class="comment">// Interval ("Barcelona", "Boston"] can not be represented because there is no 'steppable next' on</span> 87 <span class="comment">// lower bound "Barcelona". Ok. this is a different interval:</span> 88 <span class="identifier">interval</span><span class="special"><</span><span class="identifier">string</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">city_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="identifier">string</span><span class="special">>::</span><span class="identifier">right_open</span><span class="special">(</span><span class="string">"Barcelona"</span><span class="special">,</span> <span class="string">"Boston"</span><span class="special">);</span> 89 90 <span class="comment">// Toy Time is discrete again so we can transfrom open(Time(monday,8,30), Time(monday,17,20))</span> 91 <span class="comment">// to right_open(Time(monday,8,31), Time(monday,17,20))</span> 92 <span class="identifier">interval</span><span class="special"><</span><span class="identifier">Time</span><span class="special">>::</span><span class="identifier">type</span> <span class="identifier">time_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special"><</span><span class="identifier">Time</span><span class="special">>::</span><span class="identifier">right_open</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">31</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> 93 94 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"----- Statically bounded intervals ----------------------------------------\n"</span><span class="special">;</span> 95 <span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"right_open_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">"right_open_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">"right_open_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">"right_open_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">"Boston"</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 'Boston'"</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">"right_open_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">// Using statically bounded intervals does not allows to apply operations</span> 108 <span class="comment">// with elements on all interval containers, if their domain_type is continuous. </span> 109 <span class="comment">// The code that follows is identical to example 'dynamic_interval'. Only 'internally'</span> 110 <span class="comment">// the library default for the interval template now is 'right_open_interval' </span> 111 <span class="identifier">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">type</span> <span class="identifier">unit_interval</span> 112 <span class="special">=</span> <span class="identifier">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">right_open</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="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> 113 <span class="identifier">interval_set</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">unit_set</span><span class="special">(</span><span class="identifier">unit_interval</span><span class="special">);</span> 114 <span class="identifier">interval_set</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">ratio_set</span><span class="special">(</span><span class="identifier">unit_set</span><span class="special">);</span> 115 <span class="comment">// ratio_set -= rational<int>(1,3); // This line will not compile, because we can not</span> 116 <span class="comment">// represent a singleton interval as right_open_interval.</span> 117 <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span> 118<span class="special">}</span> 119 120<span class="comment">// Program output:</span> 121<span class="comment">//>> Interval Container Library: Sample static_interval.cpp <<</span> 122<span class="comment">//------------------------------------------------------------</span> 123<span class="comment">//----- Statically bounded intervals ----------------------------------------</span> 124<span class="comment">//right_open_interval<int> : [3,8)</span> 125<span class="comment">//right_open_interval<double>: [0.707107,1.41421) does NOT contain sqrt(2)</span> 126<span class="comment">//right_open_interval<string>: [Barcelona,Boston) does contain 'Barcelona'</span> 127<span class="comment">//right_open_interval<string>: [Barcelona,Boston) does NOT contain 'Boston'</span> 128<span class="comment">//right_open_interval<Time> : [mon:08:31,mon:17:20)</span> 129</pre> 130<p> 131 </p> 132</div> 133<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 134<td align="left"></td> 135<td align="right"><div class="copyright-footer">Copyright © 2007-2010 Joachim 136 Faulhaber<br>Copyright © 1999-2006 Cortex Software 137 GmbH<p> 138 Distributed under the Boost Software License, Version 1.0. (See accompanying 139 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>) 140 </p> 141</div></td> 142</tr></table> 143<hr> 144<div class="spirit-nav"> 145<a accesskey="p" href="dynamic_interval.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="interval_container.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> 146</div> 147</body> 148</html> 149
