[phobos] FFT

[David Simcha]

Well then we would need to define an API for matrices or something to 
define how multidimensional transforms are going to work.  In dstats, 
I've just been using ranges of ranges or tuples of ranges because it's 
available and works reasonably well, but I haven't really thought in 
detail about whether this is the optimal solution.

Also, an N-D transform is apparently trivially implementable in terms of 
a 1-D transform, so I don't know whether an API for this would be a 
must-have.

On 8/2/2010 9:18 PM, Walter Bright wrote:
>
>
> Walter Bright wrote:
>>
>> The most important thing for a Phobos implementation of FFT (or any 
>> other module) is getting the API right. Having that right means we 
>> can always swap it out for a better implementation without breaking 
>> user code.
>>
>
> For FFT this would mean looking at the best FFT implementations out 
> there to see what their API is. Phobos' should support a full feature 
> set, even if for now the implementation will throw exceptions for 
> things it doesn't support yet.
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