/* multifit/work.c *  * Copyright (C) 2000 Brian Gough *  * 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */#include <config.h>#include <gsl/gsl_errno.h>#include <gsl/gsl_multifit.h>gsl_multifit_linear_workspace *gsl_multifit_linear_alloc (size_t n, size_t p){  gsl_multifit_linear_workspace *w;  w = (gsl_multifit_linear_workspace *)    malloc (sizeof (gsl_multifit_linear_workspace));  if (w == 0)    {      GSL_ERROR_VAL ("failed to allocate space for multifit_linear struct",                     GSL_ENOMEM, 0);    }  w->n = n;                     /* number of observations */  w->p = p;                     /* number of parameters */  w->A = gsl_matrix_alloc (n, p);  if (w->A == 0)    {      free (w);      GSL_ERROR_VAL ("failed to allocate space for A", GSL_ENOMEM, 0);    }  w->Q = gsl_matrix_alloc (p, p);  if (w->Q == 0)    {      gsl_matrix_free (w->A);      free (w);      GSL_ERROR_VAL ("failed to allocate space for Q", GSL_ENOMEM, 0);    }  w->QSI = gsl_matrix_alloc (p, p);  if (w->QSI == 0)    {      gsl_matrix_free (w->Q);      gsl_matrix_free (w->A);      free (w);      GSL_ERROR_VAL ("failed to allocate space for QSI", GSL_ENOMEM, 0);    }  w->S = gsl_vector_alloc (p);  if (w->S == 0)    {      gsl_matrix_free (w->QSI);      gsl_matrix_free (w->Q);      gsl_matrix_free (w->A);      free (w);      GSL_ERROR_VAL ("failed to allocate space for S", GSL_ENOMEM, 0);    }  w->t = gsl_vector_alloc (n);  if (w->t == 0)    {      gsl_vector_free (w->S);      gsl_matrix_free (w->QSI);      gsl_matrix_free (w->Q);      gsl_matrix_free (w->A);      free (w);      GSL_ERROR_VAL ("failed to allocate space for t", GSL_ENOMEM, 0);    }  w->xt = gsl_vector_calloc (p);  if (w->xt == 0)    {      gsl_vector_free (w->t);      gsl_vector_free (w->S);      gsl_matrix_free (w->QSI);      gsl_matrix_free (w->Q);      gsl_matrix_free (w->A);      free (w);      GSL_ERROR_VAL ("failed to allocate space for xt", GSL_ENOMEM, 0);    }  w->D = gsl_vector_calloc (p);  if (w->D == 0)    {      gsl_vector_free (w->D);      gsl_vector_free (w->t);      gsl_vector_free (w->S);      gsl_matrix_free (w->QSI);      gsl_matrix_free (w->Q);      gsl_matrix_free (w->A);      free (w);      GSL_ERROR_VAL ("failed to allocate space for xt", GSL_ENOMEM, 0);    }  return w;}voidgsl_multifit_linear_free (gsl_multifit_linear_workspace * work){  gsl_matrix_free (work->A);  gsl_matrix_free (work->Q);  gsl_matrix_free (work->QSI);  gsl_vector_free (work->S);  gsl_vector_free (work->t);  gsl_vector_free (work->xt);  gsl_vector_free (work->D);  free (work);}