x" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Multi_002ddimensional-Transforms-1"></a>
<h4 class="subsection">4.8.6 Multi-dimensional Transforms</h4>

<p>The multi-dimensional transforms of FFTW, in general, compute simply the
separable product of the given 1d transform along each dimension of the
array.  Since each of these transforms is unnormalized, computing the
forward followed by the backward/inverse multi-dimensional transform
will result in the original array scaled by the product