From: Tom Burgess <Tom_Burgess AT bc DOT sympatico DOT ca>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: FFT & IFFT
Date: Fri, 21 Mar 1997 15:31:35 -0700
Organization: BCTEL Advanced Communications
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References: <5gpcqh$kci AT knot DOT queensu DOT ca> <5gthlk$agc_001 AT tuwien DOT ac DOT at>
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To: djgpp AT delorie DOT com
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godzilla wrote:
> 
> In article <5gpcqh$kci AT knot DOT queensu DOT ca>,
>    3rea AT qlink DOT queensu DOT ca (Abdul Razak Eruan) wrote:
> >Anybody who has Fast fourier transform or/and the inverse fast fourier
> >transform in C++ please send it to me. Also if you have any digital
> >filtering program: low pass, band pass and high pass. Please send them to
> >me.
> >
> >Thanks
> >
> Hi !
> I*ve searched the web for such software, too, but the only
> source code i found was for data-sets that are too small for me
> and i have no time for getting the numerical recipes and doing it myself
> so, if anyone has the source code at hand, i'd be grateful if he (she)
> could send it too me
> (i'd like to take the FFT of at least 128K points)
> sorry for this being quite off-topic !!
> greetings
> godzilla

A good site with sample C/C++ FFT code and links to other public code
is http://www.intersrv.com/~dcross/fft.html Also has a short tutorial.
Apologies for the (less useful) link I supplied earlier. As for being
off-topic, well, perhaps this can be the last post on the topic for 
awhile, unless there is some DJGPP-specific angle that comes up.

regards, tom