the frequency domain values will have the same interleaving.</dd></dl>
<dl class="section user"><dt>Floating-point</dt><dd>The floating-point complex FFT uses a mixed-radix algorithm. Multiple radix-8 stages are performed along with a single radix-2 or radix-4 stage, as needed. The algorithm supports lengths of [16, 32, 64, ..., 4096] and each length uses a different twiddle factor table. </dd></dl>
<dl class="section user"><dt></dt><dd>The function uses the standard FFT definition and output values may gro