d class="paramname"><em>Value</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Returns the bit number of the least significant bit set to 1 in the binary representation of value. </p>
<p>If value is zero, -1 will be returned.</p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
  <table class="tparams">
    <tr><td class="paramname">genIUType</td><td>Signed or unsigned integer scalar or vector types.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section