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

<p>Lower bound: first key &gt;= query. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">m</td><td>Map to query </td></tr>
    <tr><td class="paramname">key</td><td>Query key </td></tr>
    <tr><td class="paramname">it_out</td><td>Iterator positioned at lower bound on success </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>1 if a bound exists (iter