[SciPy-user] Why are there two FFTs?
haase at msg.ucsf.edu
Fri Jan 6 14:14:09 CST 2006
On Friday 06 January 2006 11:09, Travis Oliphant wrote:
> Gary wrote:
> >scipy.fftpack.* and numpy.dft.*
> >are they different under the hood
> Yes. scipy.fftpack can link to fftw and/or djbfft for example which can
> be faster (but also have more install difficulties...). Also the
> extension module is f2py generated.
> numpy.dft always uses an f2c'd version of fftpack and a hand-written
> extension module.
Is there any support for "single precision" (float32,complex32) fft ?
We consider this quite important since our 3D image can already be on the
order of 500MB ...
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