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Re: GSL 2.0 roadmap (one man's view)
> As a kind of apology for this state of affairs, the functions attempt
> to estimate errors, using heuristic and sometimes ill-defined methods.
> This turns out to be a poor apology, since it tends to gum-up the
> works for the whole sublibrary, eating performance and occupying
> a large piece of intellectual real estate.
>
> The error estimation code must, at the least, be factored out. More
> to the point, is should likely be discarded in the main line of
> development. Other notions of error control should be investigated.
I have found the error estimates to be pretty useful when debugging,
and they are only a small extra cost.
Some of the hypergeometric functions are difficult to understand in
places. Here it would be good to have an explicit higher-level
version of the C implementation, for example in Maxima, that one could
test against and understand more easily.