Speed-wise, I've just been goofing around for the past hour or so and I've sped it up 2x. It now does 1 size 2 ^^ 20 double[] -> Complex!double FFT in about 880 milliseconds.

On 8/1/2010 3:36 PM, Walter Bright wrote:
David Simcha wrote:

As I am no longer going to use FFTs in my kernel density lib, improving this FFT code will be bumped down my hacking to-do list. Does what I have now sound better than nothing by a large enough margin to warrant inclusion in std.numeric, or does it sound too primitive to be widely useful? If it sounds worth including I'll clean up/document the code and send it to the mailing list for review. If it sounds too primitive, I'll just scrap it.


I don't know enough about FFT's to make any sort of informed comment.
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