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<title>Function indeterminate</title>
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<h2><span class="refentrytitle">Function indeterminate</span></h2>
<p>boost::logic::indeterminate — Keyword and test function for the indeterminate tribool value. </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="type"><span class="bold"><strong>bool</strong></span></span> indeterminate(<a href="boost/logic/tribool.html" title="Class tribool">tribool</a> x, <span class="emphasis"><em>unspecified</em></span> dummy = <span class="emphasis"><em>unspecified</em></span>);</pre></div>
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<a name="id1569800"></a><h2>Description</h2>
<p>The <code class="computeroutput">indeterminate</code> function has a dual role. It's first role is as a unary function that tells whether the tribool value is in the "indeterminate" state. It's second role is as a keyword representing the indeterminate (just like "true" and "false" represent the true and false states). If you do not like the name "indeterminate", and would prefer to use a different name, see the macro <code class="computeroutput">BOOST_TRIBOOL_THIRD_STATE</code> .</p>
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<p><b xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision"><span class="term">Returns</span></b>:
<code class="computeroutput">x.value == tribool::indeterminate_value</code><br><b xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision"><span class="term">Throws</span></b>:
Will not throw.</p>
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