On 4.6.2015 16:23, Patrick Dupre wrote:
>
> ===========================================================================
> 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.
>
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