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  26 <a name="boost.logic.operator==_idp214991632"></a><div class="titlepage"></div>
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  28 <h2><span class="refentrytitle">Function operator==</span></h2>
  29 <p>boost::logic::operator== &#8212; Compare tribools for equality. </p>
  30 </div>
  31 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  32 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../tribool/reference.html#header.boost.logic.tribool_hpp" title="Header &lt;boost/logic/tribool.hpp&gt;">boost/logic/tribool.hpp</a>&gt;
  33
  34 </span>
  35 <a class="link" href="tribool.html" title="Class tribool">tribool</a> <span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><a class="link" href="tribool.html" title="Class tribool">tribool</a> x<span class="special">,</span> <a class="link" href="tribool.html" title="Class tribool">tribool</a> y<span class="special">)</span><span class="special">;</span>
  36 <a class="link" href="tribool.html" title="Class tribool">tribool</a> <span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><a class="link" href="tribool.html" title="Class tribool">tribool</a> x<span class="special">,</span> <span class="keyword">bool</span> y<span class="special">)</span><span class="special">;</span>
  37 <a class="link" href="tribool.html" title="Class tribool">tribool</a> <span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">bool</span> x<span class="special">,</span> <a class="link" href="tribool.html" title="Class tribool">tribool</a> y<span class="special">)</span><span class="special">;</span>
  38 <a class="link" href="tribool.html" title="Class tribool">tribool</a> <span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="identifier">indeterminate_keyword_t</span><span class="special">,</span> <a class="link" href="tribool.html" title="Class tribool">tribool</a> x<span class="special">)</span><span class="special">;</span>
  39 <a class="link" href="tribool.html" title="Class tribool">tribool</a> <span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><a class="link" href="tribool.html" title="Class tribool">tribool</a> x<span class="special">,</span> <span class="identifier">indeterminate_keyword_t</span><span class="special">)</span><span class="special">;</span></pre></div>
  40 <div class="refsect1">
  41 <a name="idp471923888"></a><h2>Description</h2>
  42 <p>
  43
  44 </p>
  45 <div class="variablelist"><table border="0" class="variablelist compact">
  46 <colgroup>
  47 <col align="left" valign="top">
  48 <col>
  49 </colgroup>
  50 <tbody>
  51 <tr>
  52 <td><p><span class="term">Returns:</span></p></td>
  53 <td>
  54 <p>the result of comparing two tribool values, according to the following table: </p>
  55 <div class="informaltable"><table class="table">
  56 <colgroup>
  57 <col>
  58 <col>
  59 <col>
  60 <col>
  61 </colgroup>
  62 <tbody>
  63 <tr>
  64 <td align="center" valign="middle"><span class="bold"><strong><code class="computeroutput">==</code></strong></span></td>
  65 <td align="center" valign="middle"><span class="bold"><strong>false</strong></span></td>
  66 <td align="center" valign="middle"><span class="bold"><strong>true</strong></span></td>
  67 <td align="center" valign="middle"><span class="bold"><strong>indeterminate</strong></span></td>
  68 </tr>
  69 <tr>
  70 <td align="center" valign="middle"><span class="bold"><strong>false</strong></span></td>
  71 <td align="center" valign="middle">true</td>
  72 <td align="center" valign="middle">false</td>
  73 <td align="center" valign="middle">indeterminate</td>
  74 </tr>
  75 <tr>
  76 <td align="center" valign="middle"><span class="bold"><strong>true</strong></span></td>
  77 <td align="center" valign="middle">false</td>
  78 <td align="center" valign="middle">true</td>
  79 <td align="center" valign="middle">indeterminate</td>
  80 </tr>
  81 <tr>
  82 <td align="center" valign="middle"><span class="bold"><strong>indeterminate</strong></span></td>
  83 <td align="center" valign="middle">indeterminate</td>
  84 <td align="center" valign="middle">indeterminate</td>
  85 <td align="center" valign="middle">indeterminate</td>
  86 </tr>
  87 </tbody>
  88 </table></div>
  89 <p>
  90 </p>
  91 </td>
  92 </tr>
  93 <tr>
  94 <td><p><span class="term">Throws:</span></p></td>
  95 <td>Will not throw.</td>
  96 </tr>
  97 </tbody>
  98 </table></div>
  99 </div>
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 102 <td align="left"></td>
 103 <td align="right"><div class="copyright-footer">Copyright &#169; 2002-2004 Douglas Gregor<p>Use, modification and distribution is subject to the Boost
 104     Software License, Version 1.0. (See accompanying file
 105     <code class="filename">LICENSE_1_0.txt</code> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</p>
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