* Fourier
@ 2009-07-17 3:18 Pablo
2009-07-17 14:27 ` Fourier John B. Matthews
2009-07-17 19:29 ` Fourier lanceboyle
0 siblings, 2 replies; 9+ messages in thread
From: Pablo @ 2009-07-17 3:18 UTC (permalink / raw)
Does someone know an ADA implementation of some Fourier Transform? Or
where I can find it...
^ permalink raw reply [flat|nested] 9+ messages in thread
* Fourier
@ 2009-07-17 3:23 Pablo
2009-07-17 7:27 ` Fourier Dmitry A. Kazakov
0 siblings, 1 reply; 9+ messages in thread
From: Pablo @ 2009-07-17 3:23 UTC (permalink / raw)
Does someone know an ADA implementation of some Fourier Transform? Or
where I can find it?
Regards,
Pablo.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Fourier
2009-07-17 3:23 Fourier Pablo
@ 2009-07-17 7:27 ` Dmitry A. Kazakov
2009-07-17 7:37 ` Fourier tmoran
2009-07-17 11:46 ` Fourier Chrono
0 siblings, 2 replies; 9+ messages in thread
From: Dmitry A. Kazakov @ 2009-07-17 7:27 UTC (permalink / raw)
On Thu, 16 Jul 2009 20:23:17 -0700 (PDT), Pablo wrote:
> Does someone know an ADA implementation of some Fourier Transform? Or
> where I can find it?
One implementation of FFT is mentioned at AdaIC:
http://www.adaic.org/links/libs.html
(the last in the list)
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Fourier
2009-07-17 7:27 ` Fourier Dmitry A. Kazakov
@ 2009-07-17 7:37 ` tmoran
2009-07-17 11:49 ` Fourier Chrono
2009-07-17 11:46 ` Fourier Chrono
1 sibling, 1 reply; 9+ messages in thread
From: tmoran @ 2009-07-17 7:37 UTC (permalink / raw)
> One implementation of FFT is mentioned at AdaIC:
There are many around - do you want an FFT for general (composite)
N, or just powers of two. Do you want to link in highly optimized
routines for particular sizes, or just something simple to use.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Fourier
2009-07-17 7:37 ` Fourier tmoran
@ 2009-07-17 11:49 ` Chrono
2009-07-17 23:53 ` Fourier tmoran
0 siblings, 1 reply; 9+ messages in thread
From: Chrono @ 2009-07-17 11:49 UTC (permalink / raw)
On 17 jul, 04:37, tmo...@acm.org wrote:
> > One implementation of FFT is mentioned at AdaIC:
>
> There are many around - do you want an FFT for general (composite)
> N, or just powers of two. Do you want to link in highly optimized
> routines for particular sizes, or just something simple to use.
I look for general N, simple to use, basic to analyse data energy
coherence.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Fourier
2009-07-17 11:49 ` Fourier Chrono
@ 2009-07-17 23:53 ` tmoran
0 siblings, 0 replies; 9+ messages in thread
From: tmoran @ 2009-07-17 23:53 UTC (permalink / raw)
>I look for general N, simple to use, basic to analyse data energy
>coherence.
I use a Glassman algorithm version. It's fast for highly composite
N (eg, powers of 2), but slow for prime sizes. For FFTing images, that
could be very slow indeed, so I use a companion utility to find the
operation count for each K in N .. N+20 to see if a small extension of
the data will substantially speed things up.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Fourier
2009-07-17 7:27 ` Fourier Dmitry A. Kazakov
2009-07-17 7:37 ` Fourier tmoran
@ 2009-07-17 11:46 ` Chrono
1 sibling, 0 replies; 9+ messages in thread
From: Chrono @ 2009-07-17 11:46 UTC (permalink / raw)
On 17 jul, 04:27, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
wrote:
> On Thu, 16 Jul 2009 20:23:17 -0700 (PDT), Pablo wrote:
> > Does someone know an ADA implementation of some Fourier Transform? Or
> > where I can find it?
>
> One implementation of FFT is mentioned at AdaIC:
>
> http://www.adaic.org/links/libs.html
>
> (the last in the list)
>
> --
> Regards,
> Dmitry A. Kazakovhttp://www.dmitry-kazakov.de
Great!
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2009-07-17 23:53 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2009-07-17 3:18 Fourier Pablo
2009-07-17 14:27 ` Fourier John B. Matthews
2009-07-17 19:29 ` Fourier lanceboyle
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2009-07-17 3:23 Fourier Pablo
2009-07-17 7:27 ` Fourier Dmitry A. Kazakov
2009-07-17 7:37 ` Fourier tmoran
2009-07-17 11:49 ` Fourier Chrono
2009-07-17 23:53 ` Fourier tmoran
2009-07-17 11:46 ` Fourier Chrono
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