[Gsll-devel] Patch that exports symbols required to use non-linear fitting outside the gsl package

[Russell Kliese]

Yes, I was thinking the same thing. I created a new patch and tested the
example.

There is also the issue of the ls-covariance function requiring a raw
pointer to the Jacobin matrix. I just exported the jacobian function in
the attached patch.

Cheers,

Russell

On Thu, 2010-04-22 at 22:45 -0400, Liam Healy wrote:
> Hmm, so it does.  I'm wondering if fit-test-delta is always
> called with last-step and current-position derived from the
> same fit object.  In which case, would it make sense
> to just have one argument there, the fit object?
> E.g. (fit-test-delta fit 1.0d-4 1.0d-4)
> What do you think?
> 
> Liam
> 
> On Wed, Apr 21, 2010 at 10:15 PM, Russell Kliese <russell at kliese.id.au> wrote:
> > Hi Liam,
> >
> > The example included at the bottom of
> > gsll/solve-minimize-fit/nonlinear-least-squares.lisp, line 373
> > (fit-test-delta (last-step fit) (mpointer (solution fit)) 1.0d-4
> > 1.0d-4)) uses (mpointer (solution fit)). Because mpointer isn't
> > exported, I thought I would create a specific function like last-step
> > and jacobian that return raw pointers. I don't really have a good
> > working knowledge of the internals of gsll so this may be a naive fix.
> >
> > Cheers,
> >
> > Russell
> >
> > 2010/4/22 Liam Healy <lhealy at common-lisp.net>:
> >> Russell,
> >>
> >> Can you give an example showing why this function is needed?
> >> If I understand correctly, #'solution gives an marray which
> >> can be used like any other marray.  As a general practice
> >> I don't define functions returning raw pointers unless the exclusive
> >> use of the returned value from the original function
> >> use is to pass to a GSL function that must take a raw
> >> pointer, and that is very rare.
> >>
> >> Liam
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