expfit vs harminv - which is faster/smaller ?

[Francesco Potortì]

>there is 'expfit' in the forge package and there is 'harminv' which is a
>standalone program (and a library if one needs).
>
>If I understand correctly, they both do the same thing.
>
>It looks like both are based on BLAS, but maybe somebody has experience with
>both and knows which of them is faster and which of them has smaller memory
>footprint.
>
>I think they are about equal, but just want to make sure.

By reading the docs, it seems to me that they use different methods, are
thought for different problems and require different inputs: expfit
requires you to give it a number of harmonics to find, while harminv
wants a range where to search for them.

That said, I should make it clear that I have no experience whatsoever
with those methods.

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