    </div>
        </div>
      </div>
    </div>
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    <section>
    <h2><span class="anchor" id="src"></span>Source Code</h2>
    <div class="hl codehilite"><pre><span></span><span class="w">    </span><span class="k">function </span><span class="n">FFT_3D</span><span class="p">(</span><span class="nb">signal</span><span class="p">,</span><span class="w"> </span><span class="n">method</span><span class="p">,</span><span class="w"> </span><span class="n">threads</span>