On 4.6.2015 16:23, Patrick Dupre wrote:
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Patrick DUPRÉ | | email: pdu...@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
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Sent: Thursday, June 04, 2015 at 3:01 PM
From: "Jonathan Underwood" <jonathan.underw...@gmail.com>
To: "Community support for Fedora users" <users@lists.fedoraproject.org>
Subject: Re: gsl
On 3 June 2015 at 22:23, Patrick Dupre <pdu...@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
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