proposed changes for fft stuff



On 7/9/09, Robert Dodier <robert.dodier at gmail.com> wrote:

> What's new:
>  * fft and fft_inverse accept lists as arguments
>    (in addition to named and unnamed arrays)
>  * return value type is same as whatever was supplied
>  * non-float numeric values OK
>  * test script
>
> What's changed:
>  * renamed ift to fft_inverse
>  * fft and fft_inverse do not modify their arguments
>  * fft and fft_inverse take 1 argument (complex),
>    not 2 (separate real and imaginary parts)
>  * attempted to clarify documentation

OK, I've committed these changes, except that
the inverse transform is named inverse_fft.

best

Robert Dodier