1 /* permutation/gsl_permutation.h
3 * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2004, 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.
20 #ifndef __GSL_PERMUTATION_H__
21 #define __GSL_PERMUTATION_H__
24 #include <gsl/gsl_types.h>
25 #include <gsl/gsl_errno.h>
26 #include <gsl/gsl_check_range.h>
31 # define __BEGIN_DECLS extern "C" {
32 # define __END_DECLS }
34 # define __BEGIN_DECLS /* empty */
35 # define __END_DECLS /* empty */
40 struct gsl_permutation_struct
46 typedef struct gsl_permutation_struct gsl_permutation;
48 gsl_permutation *gsl_permutation_alloc (const size_t n);
49 gsl_permutation *gsl_permutation_calloc (const size_t n);
50 void gsl_permutation_init (gsl_permutation * p);
51 void gsl_permutation_free (gsl_permutation * p);
52 int gsl_permutation_memcpy (gsl_permutation * dest, const gsl_permutation * src);
54 int gsl_permutation_fread (FILE * stream, gsl_permutation * p);
55 int gsl_permutation_fwrite (FILE * stream, const gsl_permutation * p);
56 int gsl_permutation_fscanf (FILE * stream, gsl_permutation * p);
57 int gsl_permutation_fprintf (FILE * stream, const gsl_permutation * p, const char *format);
59 size_t gsl_permutation_size (const gsl_permutation * p);
60 size_t * gsl_permutation_data (const gsl_permutation * p);
62 size_t gsl_permutation_get (const gsl_permutation * p, const size_t i);
63 int gsl_permutation_swap (gsl_permutation * p, const size_t i, const size_t j);
65 int gsl_permutation_valid (const gsl_permutation * p);
66 void gsl_permutation_reverse (gsl_permutation * p);
67 int gsl_permutation_inverse (gsl_permutation * inv, const gsl_permutation * p);
68 int gsl_permutation_next (gsl_permutation * p);
69 int gsl_permutation_prev (gsl_permutation * p);
70 int gsl_permutation_mul (gsl_permutation * p, const gsl_permutation * pa, const gsl_permutation * pb);
72 int gsl_permutation_linear_to_canonical (gsl_permutation * q, const gsl_permutation * p);
73 int gsl_permutation_canonical_to_linear (gsl_permutation * p, const gsl_permutation * q);
75 size_t gsl_permutation_inversions (const gsl_permutation * p);
76 size_t gsl_permutation_linear_cycles (const gsl_permutation * p);
77 size_t gsl_permutation_canonical_cycles (const gsl_permutation * q);
83 gsl_permutation_get (const gsl_permutation * p, const size_t i)
88 GSL_ERROR_VAL ("index out of range", GSL_EINVAL, 0);
94 #endif /* HAVE_INLINE */
98 #endif /* __GSL_PERMUTATION_H__ */