(moved to Haskell-cafe) On Wednesday 25 July 2007 12:52, Gregory Wright wrote:

On Jul 25, 2007, at 6:39 AM, Chris Kuklewicz wrote:

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Alberto Ruiz wrote:

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I have included a binding to gsl_sf_gamma in the darcs repo of GSLHaskell: http://dis.um.es/~alberto/GSLHaskell/doc/GSL-Special.html#v%3Agamma I will try to upload to hackage a recent version of the library in a few days. Alberto

It occurs to me that generating the binding for all the GSL "Special" functions by hand may be labor intensive. Would it be reasonable to have a (perhaps customized) tool generate the wrapping code?

Absolutely! I am busy working on my applications and rewriting the internal support for the linear algebra wrappers, so I usually add new functions only when I need them for my own work. But a GSL library without the simplest functions is not very useful...

I have some functions that make wrapping the GSL special functions much simpler. I've used them to wrap all of the Airy and Bessel functions. The process could be automated, but there are a few more cases than convenient. (For example, the computationally expensive functions take an additional argument specifying how much precision is desired.) It wouldn't be too much work to automate the most common cases (double arg, double return and double arg, error struct return); perhaps doing the remainder by hand is reasonable.

That's also right, so I have written a (very crude and ad-hoc) tool to generate wrappers for the most common cases. The results look promising: http://perception.inf.um.es/~aruiz/darcs/HSSL/doc/html/GSL-Special.html They are available in the new version of the library. In principle it is already working but needs more testing. I plan to upload a version to hackage (the repo can be found in the GSLHaskell web page). A problem with automatic wrappers is that we should still add a small piece of useful haddock documentation and appropriate tests for each function.

I also have bindings for all of the ODE integration routines and all of the numerical differentiation routines. All are low level, just exposing the underlying GSL routines without any "convenience wrapper". I can make them available if anyone is interested.

Best Wishes, Greg

Good! I'd like to include a high level interface to the ODE routines. Perhaps it could be based on your bindings... Best regards, Alberto