93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
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/* combination/gsl_combination.h
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* based on permutation/gsl_permutation.h by Brian Gough
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*
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* Copyright (C) 2001 Szymon Jaroszewicz
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __GSL_COMBINATION_H__
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#define __GSL_COMBINATION_H__
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#include <stdlib.h>
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#include <gsl/gsl_errno.h>
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#include <gsl/gsl_types.h>
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#include <gsl/gsl_inline.h>
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#include <gsl/gsl_check_range.h>
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#undef __BEGIN_DECLS
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#undef __END_DECLS
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#ifdef __cplusplus
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# define __BEGIN_DECLS extern "C" {
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# define __END_DECLS }
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#else
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# define __BEGIN_DECLS /* empty */
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# define __END_DECLS /* empty */
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#endif
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__BEGIN_DECLS
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struct gsl_combination_struct
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{
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size_t n;
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size_t k;
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size_t *data;
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};
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typedef struct gsl_combination_struct gsl_combination;
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gsl_combination *gsl_combination_alloc (const size_t n, const size_t k);
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gsl_combination *gsl_combination_calloc (const size_t n, const size_t k);
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void gsl_combination_init_first (gsl_combination * c);
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void gsl_combination_init_last (gsl_combination * c);
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void gsl_combination_free (gsl_combination * c);
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int gsl_combination_memcpy (gsl_combination * dest, const gsl_combination * src);
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int gsl_combination_fread (FILE * stream, gsl_combination * c);
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int gsl_combination_fwrite (FILE * stream, const gsl_combination * c);
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int gsl_combination_fscanf (FILE * stream, gsl_combination * c);
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int gsl_combination_fprintf (FILE * stream, const gsl_combination * c, const char *format);
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size_t gsl_combination_n (const gsl_combination * c);
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size_t gsl_combination_k (const gsl_combination * c);
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size_t * gsl_combination_data (const gsl_combination * c);
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int gsl_combination_valid (gsl_combination * c);
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int gsl_combination_next (gsl_combination * c);
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int gsl_combination_prev (gsl_combination * c);
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INLINE_DECL size_t gsl_combination_get (const gsl_combination * c, const size_t i);
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#ifdef HAVE_INLINE
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INLINE_FUN
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size_t
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gsl_combination_get (const gsl_combination * c, const size_t i)
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{
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#if GSL_RANGE_CHECK
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if (GSL_RANGE_COND(i >= c->k)) /* size_t is unsigned, can't be negative */
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{
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GSL_ERROR_VAL ("index out of range", GSL_EINVAL, 0);
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}
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#endif
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return c->data[i];
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}
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#endif /* HAVE_INLINE */
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__END_DECLS
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#endif /* __GSL_COMBINATION_H__ */
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