[SciPy-user] FFTW no longer required

Travis Oliphant oliphant.travis at ieee.org
Mon Mar 25 19:51:34 CST 2002

In recent versions of the  SciPy CVS tree,  FFTW is no longer required.  It 
is not built by default and FFTPACK is used instead for fft algorithms.  This 
results in a 5~25% slowdown for fft computations (particularly if your image 
sizes are products of large prime numbers >5). 

You can still build the fftw interface by modifying setup.py.


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