a just beyond it.<a name="DOCF11" href="#FOOT11"><sup>11</sup></a>
</p>
<p>Wisdom has been enhanced by additional humility in FFTW 3: whereas FFTW
2 would re-use wisdom for a given transform size regardless of the
stride etc., in FFTW 3 wisdom is only used with the strides etc. for
which it was created.  Unfortunately, this means FFTW 3 has to create
new plans from scratch more often than FFTW 2 (in FFTW 2, planning
e.g. one transform of size 1024 also created wisdom for all smaller
powers of 2, but this no