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- /* permutation/gsl_permutation.h
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2004, 2007 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 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.
- */
- #ifndef __GSL_PERMUTATION_H__
- #define __GSL_PERMUTATION_H__
- #include <stdlib.h>
- #include "gsl_types.h"
- #include "gsl_errno.h"
- #include "gsl_check_range.h"
- #undef __BEGIN_DECLS
- #undef __END_DECLS
- #ifdef __cplusplus
- # define __BEGIN_DECLS extern "C" {
- # define __END_DECLS }
- #else
- # define __BEGIN_DECLS /* empty */
- # define __END_DECLS /* empty */
- #endif
- __BEGIN_DECLS
- struct gsl_permutation_struct
- {
- size_t size;
- size_t *data;
- };
- typedef struct gsl_permutation_struct gsl_permutation;
- gsl_permutation *gsl_permutation_alloc (const size_t n);
- gsl_permutation *gsl_permutation_calloc (const size_t n);
- void gsl_permutation_init (gsl_permutation * p);
- void gsl_permutation_free (gsl_permutation * p);
- int gsl_permutation_memcpy (gsl_permutation * dest, const gsl_permutation * src);
- int gsl_permutation_fread (FILE * stream, gsl_permutation * p);
- int gsl_permutation_fwrite (FILE * stream, const gsl_permutation * p);
- int gsl_permutation_fscanf (FILE * stream, gsl_permutation * p);
- int gsl_permutation_fprintf (FILE * stream, const gsl_permutation * p, const char *format);
- size_t gsl_permutation_size (const gsl_permutation * p);
- size_t * gsl_permutation_data (const gsl_permutation * p);
- size_t gsl_permutation_get (const gsl_permutation * p, const size_t i);
- int gsl_permutation_swap (gsl_permutation * p, const size_t i, const size_t j);
- int gsl_permutation_valid (gsl_permutation * p);
- void gsl_permutation_reverse (gsl_permutation * p);
- int gsl_permutation_inverse (gsl_permutation * inv, const gsl_permutation * p);
- int gsl_permutation_next (gsl_permutation * p);
- int gsl_permutation_prev (gsl_permutation * p);
- int gsl_permutation_mul (gsl_permutation * p, const gsl_permutation * pa, const gsl_permutation * pb);
- int gsl_permutation_linear_to_canonical (gsl_permutation * q, const gsl_permutation * p);
- int gsl_permutation_canonical_to_linear (gsl_permutation * p, const gsl_permutation * q);
- size_t gsl_permutation_inversions (const gsl_permutation * p);
- size_t gsl_permutation_linear_cycles (const gsl_permutation * p);
- size_t gsl_permutation_canonical_cycles (const gsl_permutation * q);
- #ifdef HAVE_INLINE
- extern inline
- size_t
- gsl_permutation_get (const gsl_permutation * p, const size_t i)
- {
- #if GSL_RANGE_CHECK
- if (i >= p->size)
- {
- GSL_ERROR_VAL ("index out of range", GSL_EINVAL, 0);
- }
- #endif
- return p->data[i];
- }
- #endif /* HAVE_INLINE */
- __END_DECLS
- #endif /* __GSL_PERMUTATION_H__ */
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