3 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Brian Gough
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22 #include <gsl/gsl_errno.h>
23 #include <gsl/gsl_permutation.h>
26 gsl_permutation_alloc (const size_t n)
32 GSL_ERROR_VAL ("permutation length n must be positive integer",
36 p = (gsl_permutation *) malloc (sizeof (gsl_permutation));
40 GSL_ERROR_VAL ("failed to allocate space for permutation struct",
44 p->data = (size_t *) malloc (n * sizeof (size_t));
48 free (p); /* exception in constructor, avoid memory leak */
50 GSL_ERROR_VAL ("failed to allocate space for permutation data",
60 gsl_permutation_calloc (const size_t n)
64 gsl_permutation * p = gsl_permutation_alloc (n);
69 /* initialize permutation to identity */
71 for (i = 0; i < n; i++)
80 gsl_permutation_init (gsl_permutation * p)
82 const size_t n = p->size ;
85 /* initialize permutation to identity */
87 for (i = 0; i < n; i++)
94 gsl_permutation_free (gsl_permutation * p)