/* multilarge_nlinear/dummy.c

 * 

 * Copyright (C) 2016 Patrick Alken

 * 

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3 of the License, or (at

 * your option) any later version.

 * 

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 */

/* dummy linear solver */

#include <config.h>

#include <gsl/gsl_math.h>

#include <gsl/gsl_vector.h>

#include <gsl/gsl_matrix.h>

#include <gsl/gsl_linalg.h>

#include <gsl/gsl_multilarge_nlinear.h>

#include <gsl/gsl_errno.h>

#include <gsl/gsl_blas.h>

#include <gsl/gsl_permutation.h>

static void *dummy_alloc (const size_t n, const size_t p);

static int dummy_init(const void * vtrust_state, void * vstate);

static int dummy_presolve(const double mu, const void * vtrust_state, void * vstate);

static int dummy_solve(const gsl_vector * g, gsl_vector *x,

                       const  void * vtrust_state, void *vstate);

static int dummy_rcond(double * rcond, const gsl_matrix * JTJ, void * vstate);

static int dummy_covar(const gsl_matrix * JTJ, gsl_matrix * covar, void * vstate);

static void *

dummy_alloc (const size_t n, const size_t p)

{

  (void) n;

  (void) p;

  return NULL;

}

static void

dummy_free(void *vstate)

{

  (void) vstate;

}

static int

dummy_init(const void * vtrust_state, void * vstate)

{

  (void) vtrust_state;

  (void) vstate;

  return GSL_SUCCESS;

}

static int

dummy_presolve(const double mu, const void * vtrust_state, void * vstate)

{

  (void) mu;

  (void) vtrust_state;

  (void) vstate;

  return GSL_SUCCESS;

}

static int

dummy_solve(const gsl_vector * g, gsl_vector *x,

            const void * vtrust_state, void *vstate)

{

  (void) g;

  (void) x;

  (void) vtrust_state;

  (void) vstate;

  return GSL_SUCCESS;

}

static int

dummy_rcond(double * rcond, const gsl_matrix * JTJ, void * vstate)

{

  (void) vstate;

  (void) rcond;

  (void) JTJ;

  *rcond = 0.0;

  return GSL_SUCCESS;

}

static int

dummy_covar(const gsl_matrix * JTJ, gsl_matrix * covar, void * vstate)

{

  (void) vstate;

  (void) JTJ;

  gsl_matrix_set_zero(covar);

  return GSL_SUCCESS;

}

static const gsl_multilarge_nlinear_solver dummy_type =

{

  "dummy",

  dummy_alloc,

  dummy_init,

  dummy_presolve,

  dummy_solve,

  dummy_rcond,

  dummy_covar,

  dummy_free

};

const gsl_multilarge_nlinear_solver *gsl_multilarge_nlinear_solver_none = &dummy_type;