gsl

[Patrick Dupre]

===========================================================================
 Patrick DUPRÉ                                 | | email: pdupre at gmx.com
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================


> Sent: Thursday, June 04, 2015 at 3:01 PM
> From: "Jonathan Underwood" <jonathan.underwood at gmail.com>
> To: "Community support for Fedora users" <users at lists.fedoraproject.org>
> Subject: Re: gsl
>
> 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;

 warning: initialization from incompatible pointer type [enabled by default]
   const gsl_multifit_fsolver_type *T_ = gsl_multifit_fdfsolver_lmsder ;

fsolver and fdfsolver are not compatible!
I did not find a way to initiate this pointer.


> HTH,
> Jonathan.
> -- 
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