[SciPy-user] how to build in fftw3 support?

[Lin Shao]

On Thu, May 22, 2008 at 12:06 PM, Robert Kern <robert.kern at gmail.com> wrote:
> On Thu, May 22, 2008 at 1:52 PM, Lin Shao <shao at msg.ucsf.edu> wrote:
>> One more question. In scipy.fftpack, where isn't there a rfftn()
>> function (just as numpy.fft.fftpack does)?
>
> I presume because of the lack of support from the non-FFTPACK backends.
>

Did you mean "lack of support of real-to-complex FFT in fftw3"? I'm
pretty sure fftw3 has that support (see
http://www.fftw.org/fftw3_doc/Multi_002dDimensional-DFTs-of-Real-Data.html#Multi_002dDimensional-DFTs-of-Real-Data
)

Another question: Does the fftw3 wrap in scipy.fftpack support
multithread (and therefore multiple processor cores) by default?

Thanks.

-lin