h3>Parameters:</h3>
<ul>
	
	<li>
	  <code><em>list</em></code>: 
	</li>
	
</ul>








</dd>




<dt><a name="work"></a><strong>work</strong>&nbsp;(input, output, out_index, f, factors, factors_index, twiddles, fstride, in_stride, inverse)</dt>
<dd>
The essential work function that performs the FFT 


<h3>Parameters:</h3>
<ul>
	
	<li>
	  <code><em>input</em></code>: 
	</li>
	
	<li>
	  <code><em>output</em></code>: 
	</li>
	
	<li>
	  <code><em>out_index</em></code>: 
	</li>
	
	<li>
	  <code><em>f</em></code