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  25 <div class="section boost_icl_examples_static_interval" lang="en">
  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 <p>
  32
  33 </p>
  34 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
  35 <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;</span>
  36 <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">math</span><span class="special">.</span><span class="identifier">h</span><span class="special">&gt;</span>
  37 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
  38
  39 <span class="comment">// We can change the library default for the interval types by defining
  40 </span><span class="preprocessor">#define</span> <span class="identifier">BOOST_ICL_USE_STATIC_BOUNDED_INTERVALS</span>
  41 <span class="comment">// prior to other inluces from the icl.
  42 </span><span class="comment">// The interval type that is automatically used with interval
  43 </span><span class="comment">// containers then is the statically bounded right_open_interval.
  44 </span>
  45 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
  46 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
  47 <span class="comment">// The statically bounded interval type 'right_open_interval'
  48 </span><span class="comment">// is indirectly included via interval containers.
  49 </span>
  50
  51 <span class="preprocessor">#include</span> <span class="string">"../toytime.hpp"</span>
  52 <span class="preprocessor">#include</span> <span class="special">&lt;</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">&gt;</span>
  53
  54 <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">std</span><span class="special">;</span>
  55 <span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">;</span>
  56 <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>
  57
  58 <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
  59 <span class="special">{</span>
  60     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"&gt;&gt; Interval Container Library: Sample static_interval.cpp &lt;&lt;\n"</span><span class="special">;</span>
  61     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"------------------------------------------------------------\n"</span><span class="special">;</span>
  62
  63     <span class="comment">// Statically bounded intervals are the user defined library default for
  64 </span>    <span class="comment">// interval parameters in interval containers now.
  65 </span>    <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span>
  66         <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special">&lt;</span> <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;::</span><span class="identifier">interval_type</span>
  67                       <span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span>
  68                       <span class="special">));</span>
  69
  70     <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span>
  71         <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special">&lt;</span> <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="keyword">float</span><span class="special">&gt;::</span><span class="identifier">interval_type</span>
  72                       <span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special">&lt;</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span>
  73                       <span class="special">));</span>
  74
  75     <span class="comment">// As we can see the library default both for discrete and continuous
  76 </span>    <span class="comment">// domain_types T is 'right_open_interval&lt;T&gt;'.
  77 </span>    <span class="comment">// The user defined library default for intervals is also available via
  78 </span>    <span class="comment">// the template 'interval':
  79 </span>    <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">((</span>
  80         <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special">&lt;</span> <span class="identifier">interval</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;::</span><span class="identifier">type</span>
  81                       <span class="special">,</span> <span class="identifier">right_open_interval</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">value</span>
  82                       <span class="special">));</span>
  83
  84     <span class="comment">// Again we are declaring and initializing the four test intervals that have been used
  85 </span>    <span class="comment">// in the example 'interval' and 'dynamic_interval'
  86 </span>    <span class="identifier">interval</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;::</span><span class="identifier">type</span>    <span class="identifier">int_interval</span>  <span class="special">=</span> <span class="identifier">interval</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;::</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
  87 </span>    <span class="identifier">interval</span><span class="special">&lt;</span><span class="keyword">double</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">sqrt_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special">&lt;</span><span class="keyword">double</span><span class="special">&gt;::</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>
  88
  89     <span class="comment">// Interval ("Barcelona", "Boston"] can not be represented because there is no 'steppable next' on
  90 </span>    <span class="comment">// lower bound "Barcelona". Ok. this is a different interval:
  91 </span>    <span class="identifier">interval</span><span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">city_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;::</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>
  92
  93     <span class="comment">// Toy Time is discrete again so we can transfrom open(Time(monday,8,30), Time(monday,17,20))
  94 </span>    <span class="comment">//                                       to right_open(Time(monday,8,31), Time(monday,17,20))
  95 </span>    <span class="identifier">interval</span><span class="special">&lt;</span><span class="identifier">Time</span><span class="special">&gt;::</span><span class="identifier">type</span>   <span class="identifier">time_interval</span> <span class="special">=</span> <span class="identifier">interval</span><span class="special">&lt;</span><span class="identifier">Time</span><span class="special">&gt;::</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>
  96
  97     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"----- Statically bounded intervals ----------------------------------------\n"</span><span class="special">;</span>
  98     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"right_open_interval&lt;int&gt;   : "</span> <span class="special">&lt;&lt;</span> <span class="identifier">int_interval</span>  <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
  99     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"right_open_interval&lt;double&gt;: "</span> <span class="special">&lt;&lt;</span> <span class="identifier">sqrt_interval</span> <span class="special">&lt;&lt;</span> <span class="string">" does "</span>
 100                                             <span class="special">&lt;&lt;</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">&lt;&lt;</span> <span class="string">" contain sqrt(2)"</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
 102     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"right_open_interval&lt;string&gt;: "</span> <span class="special">&lt;&lt;</span> <span class="identifier">city_interval</span> <span class="special">&lt;&lt;</span> <span class="string">" does "</span>
 103                                             <span class="special">&lt;&lt;</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">&lt;&lt;</span> <span class="string">" contain 'Barcelona'"</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
 105     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"right_open_interval&lt;string&gt;: "</span> <span class="special">&lt;&lt;</span> <span class="identifier">city_interval</span> <span class="special">&lt;&lt;</span> <span class="string">" does "</span>
 106                                             <span class="special">&lt;&lt;</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>
 107                                             <span class="special">&lt;&lt;</span> <span class="string">" contain 'Boston'"</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
 108     <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"right_open_interval&lt;Time&gt;  : "</span> <span class="special">&lt;&lt;</span> <span class="identifier">time_interval</span> <span class="special">&lt;&lt;</span> <span class="string">"\n\n"</span><span class="special">;</span>
 109
 110     <span class="comment">// Using statically bounded intervals does not allows to apply operations
 111 </span>    <span class="comment">// with elements on all interval containers, if their domain_type is continuous.
 112 </span>    <span class="comment">// The code that follows is identical to example 'dynamic_interval'. Only 'internally'
 113 </span>    <span class="comment">// the library default for the interval template now is 'right_open_interval'
 114 </span>    <span class="identifier">interval</span><span class="special">&lt;</span><span class="identifier">rational</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">unit_interval</span>
 115         <span class="special">=</span> <span class="identifier">interval</span><span class="special">&lt;</span><span class="identifier">rational</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">right_open</span><span class="special">(</span><span class="identifier">rational</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(</span><span class="number">0</span><span class="special">),</span> <span class="identifier">rational</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(</span><span class="number">1</span><span class="special">));</span>
 116     <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="identifier">rational</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="special">&gt;</span> <span class="identifier">unit_set</span><span class="special">(</span><span class="identifier">unit_interval</span><span class="special">);</span>
 117     <span class="identifier">interval_set</span><span class="special">&lt;</span><span class="identifier">rational</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="special">&gt;</span> <span class="identifier">ratio_set</span><span class="special">(</span><span class="identifier">unit_set</span><span class="special">);</span>
 118     <span class="comment">// ratio_set -= rational&lt;int&gt;(1,3); // This line will not compile, because we can not
 119 </span>                                        <span class="comment">// represent a singleton interval as right_open_interval.
 120 </span>    <span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
 121 <span class="special">}</span>
 122
 123 <span class="comment">// Program output:
 124 </span><span class="comment">//&gt;&gt; Interval Container Library: Sample static_interval.cpp &lt;&lt;
 125 </span><span class="comment">//------------------------------------------------------------
 126 </span><span class="comment">//----- Statically bounded intervals ----------------------------------------
 127 </span><span class="comment">//right_open_interval&lt;int&gt;   : [3,8)
 128 </span><span class="comment">//right_open_interval&lt;double&gt;: [0.707107,1.41421) does NOT contain sqrt(2)
 129 </span><span class="comment">//right_open_interval&lt;string&gt;: [Barcelona,Boston) does  contain 'Barcelona'
 130 </span><span class="comment">//right_open_interval&lt;string&gt;: [Barcelona,Boston) does NOT contain 'Boston'
 131 </span><span class="comment">//right_open_interval&lt;Time&gt;  : [mon:08:31,mon:17:20)
 132 </span></pre>
 133 <p>
 134         </p>
 135 <p>
 136       </p>
 137 </div>
 138 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 139 <td align="left"></td>
 140 <td align="right"><div class="copyright-footer">Copyright &#169; 2007 -2010 Joachim Faulhaber<br>Copyright &#169; 1999 -2006 Cortex Software GmbH<p>
 141         Distributed under the Boost Software License, Version 1.0. (See accompanying
 142         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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