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  29 <h2><span class="refentrytitle">Function template runtime_pointer_cast</span></h2>
  30 <p>boost::typeindex::runtime_pointer_cast &#8212; Safely converts pointers to classes up, down, and sideways along the inheritance hierarchy. </p>
  31 </div>
  32 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  33 <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="../../boost_typeindex_header_reference.html#header.boost.type_index.runtime_cast.pointer_cast_hpp" title="Header &lt;boost/type_index/runtime_cast/pointer_cast.hpp&gt;">boost/type_index/runtime_cast/pointer_cast.hpp</a>&gt;
  34
  35 </span>
  36 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> U<span class="special">&gt;</span> <span class="identifier">T</span> <span class="special">*</span> <span class="identifier">runtime_pointer_cast</span><span class="special">(</span><span class="identifier">U</span> <span class="special">*</span> u<span class="special">)</span><span class="special">;</span></pre></div>
  37 <div class="refsect1">
  38 <a name="idp571018896"></a><h2>Description</h2>
  39 <p>
  40
  41 </p>
  42 <div class="variablelist"><table border="0" class="variablelist compact">
  43 <colgroup>
  44 <col align="left" valign="top">
  45 <col>
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  49 <td><p><span class="term">Template Parameters:</span></p></td>
  50 <td><div class="variablelist"><table border="0" class="variablelist compact">
  51 <colgroup>
  52 <col align="left" valign="top">
  53 <col>
  54 </colgroup>
  55 <tbody>
  56 <tr>
  57 <td><p><span class="term"><code class="computeroutput">T</code></span></p></td>
  58 <td><p>The desired target type to return a pointer to. </p></td>
  59 </tr>
  60 <tr>
  61 <td><p><span class="term"><code class="computeroutput">U</code></span></p></td>
  62 <td><p>A complete class type of the source instance, u. </p></td>
  63 </tr>
  64 </tbody>
  65 </table></div></td>
  66 </tr>
  67 <tr>
  68 <td><p><span class="term">Returns:</span></p></td>
  69 <td><p>If there exists a valid conversion from U const* to T*, returns a T* that points to an address suitably offset from u. If no such conversion exists, returns NULL. </p></td>
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  77 <td align="right"><div class="copyright-footer">Copyright &#169; 2012-2016 Antony Polukhin<p>
  78         Distributed under the Boost Software License, Version 1.0. (See accompanying
  79         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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