        <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Convert (el,m,n) harmonic indices to 1D index used to access flmn array.</p>
<dl class="section note"><dt>Note</dt><dd>Index ranges are as follows:<ul>
<li>el ranges from [0 .. L-1].</li>
<li>m ranges from [-el .. el].</li>
<li>n ranges from [-el' .. el'], where el' = min{el, N}</li>
<li>ind ranges from [0 .. (2*N)(L**2-N(N-1)/3)-1] for compact storage methods and from [0 .. (2*N-1)*L**2-1] for 0-padde