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<h2><span class="refentrytitle">Macro BOOST_TRIBOOL_THIRD_STATE</span></h2>
<p>BOOST_TRIBOOL_THIRD_STATE &#8212; Declare a new name for the third state of a tribool. </p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<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;

</span>BOOST_TRIBOOL_THIRD_STATE(Name)</pre></div>
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<a name="idp364033104"></a><h2>Description</h2>
<p>Use this macro to declare a new name for the third state of a tribool. This state can have any number of new names (in addition to <code class="computeroutput">indeterminate</code>), all of which will be equivalent. The new name will be placed in the namespace in which the macro is expanded.</p>
<p>Example: BOOST_TRIBOOL_THIRD_STATE(true_or_false)</p>
<p>tribool x(true_or_false); // potentially set x if (true_or_false(x)) { // don't know what x is } </p>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2002-2004 Douglas Gregor<p>Use, modification and distribution is subject to the Boost
    Software License, Version 1.0. (See accompanying file
    <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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