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<a name="Complex-Multi_002dDimensional-DFTs-1"></a>
<h3 class="section">2.2 Complex Multi-Dimensional DFTs</h3>

<p>Multi-dimensional transforms work much the same way as one-dimensional
transforms: you allocate arrays of <code>fftw_complex</code> (preferably
using <code>fftw_malloc</code>), create an <code>fftw_plan</code>, execute it as
many times as you want with <code>fftw_execute(plan)</code>, and clean up
with <co