Thank,
I know the fdfsolver works fine but not the fsolver which do not require
the derivatives
===========================================================================
Patrick DUPRÉ | | email: pdupre@xxxxxxx
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: Saturday, June 06, 2015 at 10:54 PM
> From: "Veli-Pekka Kestilä" <fedora@xxxxxxxxx>
> To: "Community support for Fedora users" <users@xxxxxxxxxxxxxxxxxxxxxxx>
> Subject: Re: gsl
>
> On 4.6.2015 16:23, Patrick Dupre wrote:
> >
> > ===========================================================================
> > Patrick DUPRÉ | | email: pdupre@xxxxxxx
> > 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@xxxxxxxxx>
> >> To: "Community support for Fedora users" <users@xxxxxxxxxxxxxxxxxxxxxxx>
> >> Subject: Re: gsl
> >>
> >> On 3 June 2015 at 22:23, Patrick Dupre <pdupre@xxxxxxx> 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.
> >
>
> Try this code:
> #include <gsl/gsl_multifit_nlin.h>
>
> int main () {
> const gsl_multifit_fdfsolver_type * T = gsl_multifit_fdfsolver_lmder;
> gsl_multifit_fdfsolver * s = gsl_multifit_fdfsolver_alloc (T, 100, 3);
> }
>
> from: http://manpagez.com/info/gsl-ref/gsl-ref-1.12/gsl-ref_507.php
>
> Atleast I got it to compile and run without segfaults.
>
> -vpk
>
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