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- /* combination/gsl_combination.h
- * based on permutation/gsl_permutation.h by Brian Gough
- *
- * Copyright (C) 2001 Szymon Jaroszewicz
- *
- * 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_COMBINATION_H__
- #define __GSL_COMBINATION_H__
- #include <stdlib.h>
- #include "gsl_errno.h"
- #include "gsl_types.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_combination_struct
- {
- size_t n;
- size_t k;
- size_t *data;
- };
- typedef struct gsl_combination_struct gsl_combination;
- gsl_combination *gsl_combination_alloc (const size_t n, const size_t k);
- gsl_combination *gsl_combination_calloc (const size_t n, const size_t k);
- void gsl_combination_init_first (gsl_combination * c);
- void gsl_combination_init_last (gsl_combination * c);
- void gsl_combination_free (gsl_combination * c);
- int gsl_combination_memcpy (gsl_combination * dest, const gsl_combination * src);
- int gsl_combination_fread (FILE * stream, gsl_combination * c);
- int gsl_combination_fwrite (FILE * stream, const gsl_combination * c);
- int gsl_combination_fscanf (FILE * stream, gsl_combination * c);
- int gsl_combination_fprintf (FILE * stream, const gsl_combination * c, const char *format);
- size_t gsl_combination_n (const gsl_combination * c);
- size_t gsl_combination_k (const gsl_combination * c);
- size_t * gsl_combination_data (const gsl_combination * c);
- size_t gsl_combination_get (const gsl_combination * c, const size_t i);
- int gsl_combination_valid (gsl_combination * c);
- int gsl_combination_next (gsl_combination * c);
- int gsl_combination_prev (gsl_combination * c);
- #ifdef HAVE_INLINE
- extern inline
- size_t
- gsl_combination_get (const gsl_combination * c, const size_t i)
- {
- #if GSL_RANGE_CHECK
- if (i >= c->k)
- {
- GSL_ERROR_VAL ("index out of range", GSL_EINVAL, 0);
- }
- #endif
- return c->data[i];
- }
- #endif /* HAVE_INLINE */
- __END_DECLS
- #endif /* __GSL_COMBINATION_H__ */
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