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<h2><span class="refentrytitle">Macro BOOST_PROTO_EXTENDS_FUNCTION</span></h2>
<p>BOOST_PROTO_EXTENDS_FUNCTION &#8212; For adding to an expression extension class a set of overloaded function call operators
      that build expression templates.</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="proto/reference.html#header.boost.proto.extends_hpp" title="Header &lt;boost/proto/extends.hpp&gt;">boost/proto/extends.hpp</a>&gt;

</span>BOOST_PROTO_EXTENDS_FUNCTION()</pre></div>
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<a name="idp447370176"></a><h2>Description</h2>
<p>
        Use <code class="computeroutput">BOOST_PROTO_EXTENDS_FUNCTION()</code> after <code class="computeroutput">
        <a class="link" href="BOOST_PROTO_BASIC_EXTENDS.html" title="Macro BOOST_PROTO_BASIC_EXTENDS">BOOST_PROTO_BASIC_EXTENDS</a>()</code> to give an expression
        extension class a set of overloaded function call operators that build expression templates.
        In addition, <code class="computeroutput">BOOST_PROTO_EXTENDS_FUNCTION()</code> adds a nested
        <code class="computeroutput">result&lt;&gt;</code> class template that is a metafunction for
        calculating the return type of the overloaded function call operators.
      </p>
<p>
        See also:
        </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><code class="computeroutput"><a class="link" href="BOOST_PROTO_BASIC_EXTENDS.html" title="Macro BOOST_PROTO_BASIC_EXTENDS">BOOST_PROTO_BASIC_EXTENDS</a>()</code></li>
<li class="listitem"><code class="computeroutput"><a class="link" href="BOOST_PROTO_EXTENDS_ASSIGN.html" title="Macro BOOST_PROTO_EXTENDS_ASSIGN">BOOST_PROTO_EXTENDS_ASSIGN</a>()</code></li>
<li class="listitem"><code class="computeroutput"><a class="link" href="BOOST_PROTO_EXTENDS_SUBSCRIPT.html" title="Macro BOOST_PROTO_EXTENDS_SUBSCRIPT">BOOST_PROTO_EXTENDS_SUBSCRIPT</a>()</code></li>
<li class="listitem"><code class="computeroutput"><a class="link" href="BOOST_PROTO_EXTENDS.html" title="Macro BOOST_PROTO_EXTENDS">BOOST_PROTO_EXTENDS</a>()</code></li>
</ul></div>
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      </p>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2008 Eric Niebler<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        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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