gsl

[Jonathan Underwood]

On 3 June 2015 at 22:23, Patrick Dupre <pdupre at gmx.com> wrote:
> Hello,
>
> Can somebody help me?
>
> This short piece of code fails.
> It seems to be due to the gsl library!
>
> Thank for your help.
>
> #include <gsl/gsl_multifit_nlin.h>
>
> int main () {
>   const gsl_multifit_fsolver_type *T_ ;
>   gsl_multifit_fsolver *s_ = gsl_multifit_fsolver_alloc (T_, 10, 1);
>   }
>


You haven't initialized T_, so when you call
gsl_multifit_fsolver_alloc, it fails because it doesn't know what
solver type to allocate for.

So, try initializing it, eg.

const gsl_multifit_fsolver_type *T_ = gsl_multifit_fdfsolver_lmsder;

HTH,
Jonathan.