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<h2><span class="refentrytitle">Function hash_value</span></h2>
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<p>boost::hash_value —
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Implementation of a hash function for integers.
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
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<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis">
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<span class="type">std::size_t</span> hash_value(<span class="bold"><strong>int</strong></span> val);
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<span class="type">std::size_t</span> hash_value(<span class="bold"><strong>unsigned</strong></span> <span class="bold"><strong>int</strong></span> val);
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<span class="type">std::size_t</span> hash_value(<span class="bold"><strong>long</strong></span> val);
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<span class="type">std::size_t</span> hash_value(<span class="bold"><strong>unsigned</strong></span> <span class="bold"><strong>long</strong></span> val);</pre></div>
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<div class="refsect1" lang="en">
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<a name="id1219676"></a><h2>Description</h2>
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Generally shouldn't be called directly by users, instead they should use
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<code class="computeroutput"><a href="boost/hash.html" title="Struct template hash">boost::hash</a></code>, <code class="computeroutput"><a href="hash_range.html" title="Function hash_range">boost::hash_range</a></code>
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or <code class="computeroutput"><a href="hash_combine.html" title="Function template hash_combine">boost::hash_combine</a></code> which
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call hash_value without namespace qualification so that overloads
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for custom types are found via ADL.
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<p><b xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision"><span class="term">Notes</span></b>:
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Overloads for other types supplied in other headers.<p>This is an extension to TR1</p><br><b xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision"><span class="term">Returns</span></b>:
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<code class="computeroutput">val</code></p>
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<td align="right"><small>Copyright � 2005 Daniel James</small></td>
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