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From: | Gasper Tkacik |
Subject: | Re: [pooma-dev] FFT |
Date: | Sat, 08 Feb 2003 10:33:50 -0500 |
User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2) Gecko/20021202 |
Hi Guenther!Thank you for the advice. I took a look at the code. However, I somehow cannot get the correct results when I use Real-to-Complex transform (rfftw) on 2D arrays. Is it possible that this is so because the algorithm does in-place transform and lays out the values in the half-complex packing? Has this been tested on rfftw or has it only been tested with complex-to-complex stuff? I am afraid to use complex because of the overhead.
Best regards, Gasper. Richard Guenther wrote:
On Thu, 6 Feb 2003, Gasper Tkacik wrote:Hello everybody! Is there any support for FFT operations in Pooma? For example, given a Array<double, 3>, is there any preferred way of doing FFT? If not, is there any way of doing it in parallel with the constructs that Pooma provides?Try looking at src/Transform/WrapFFTW.h which seems to make use of libfftw to do FFT.
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