td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Check safely if any pointer is part of a heap. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">heap</td><td>The heap. </td></tr>
    <tr><td class="paramname">p</td><td>Any pointer &ndash; not required to be previously allocated by us. </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><em>true</em> if <em>p</em> points to a