ingle
precision?
</A></h2>

On a Unix system: <code>configure --enable-float</code>.  On a non-Unix system: edit <code>config.h</code> to <code>#define</code> the symbol <code>FFTW_SINGLE</code> (for FFTW 3.x).  In both cases, you must then
recompile FFTW.  In FFTW 3, all FFTW identifiers will then begin with
<code>fftwf_</code> instead of <code>fftw_</code>.  
<h2><A name="64bitk7">
Question 2.12.  --enable-k7 does not work on
x86-64
</A></h2>

Support for --enable-k7 was discontinued in fftw-3.2. 

<p>
Th