[Gsll-devel] Using the numerical differentiation functions

[Liam Healy]

I say in my documentation to look at the end of the relevant files for
examples.  In this case, see
the file numerical-differentiation.lisp,

http://trac.common-lisp.net/gsll/browser/trunk/numerical-differentiation.lisp

(defun-single 3/2-power (x) (expt x 3/2))
(central-derivative 3/2-power 2.0d0 1.d-8)

Liam

On Thu, Oct 2, 2008 at 12:35 PM, Zach <elzacho at gmail.com> wrote:
> Hey Liam et al.
>
> I wanted to use the numerical differentiation functions of GSL (specifically
> gsl_deriv_central or the GSLL equiv CENTRAL-DERIVATIVE).  Does anyone have
> some examples of it's usage?
>
> i have tried this with my home brewed GSL bindings.  However, it is a bit
> trickier than most stuff I have played with since it involves a callback
> function.  The callback must be placed in a slot of a gsl_function object.
> Both of these steps seem trivial enough, but I am getting some memory error
> that I am having trouble debugging (bringing back old nightmares of C).
>
> Anyway, thanks for reading,
> Zach
>
>
>
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