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Diffstat (limited to 'gsl-1.9/combination/file.c')
-rw-r--r-- | gsl-1.9/combination/file.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/gsl-1.9/combination/file.c b/gsl-1.9/combination/file.c new file mode 100644 index 0000000..8932fd1 --- /dev/null +++ b/gsl-1.9/combination/file.c @@ -0,0 +1,114 @@ +/* combination/file.c + * based on permutation/file.c 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 2 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. + */ + +#include <config.h> +#include <stdio.h> +#include <gsl/gsl_errno.h> +#include <gsl/gsl_combination.h> + +#define IN_FORMAT "%lu" + +int +gsl_combination_fread (FILE * stream, gsl_combination * c) +{ + size_t k = c->k ; + + size_t * data = c->data ; + + size_t items = fread (data, sizeof (size_t), k, stream); + + if (items != k) + { + GSL_ERROR ("fread failed", GSL_EFAILED); + } + + return GSL_SUCCESS; +} + +int +gsl_combination_fwrite (FILE * stream, const gsl_combination * c) +{ + size_t k = c->k ; + + size_t * data = c->data ; + + size_t items = fwrite (data, sizeof (size_t), k, stream); + + if (items != k) + { + GSL_ERROR ("fwrite failed", GSL_EFAILED); + } + + return GSL_SUCCESS; +} + +int +gsl_combination_fprintf (FILE * stream, const gsl_combination * c, const char *format) +{ + size_t k = c->k ; + + size_t * data = c->data ; + + size_t i; + + for (i = 0; i < k; i++) + { + int status = fprintf (stream, format, data[i]); + + if (status < 0) + { + GSL_ERROR ("fprintf failed", GSL_EFAILED); + } + } + + return GSL_SUCCESS; +} + +int +gsl_combination_fscanf (FILE * stream, gsl_combination * c) +{ + size_t k = c->k ; + + size_t * data = c->data ; + + size_t i; + + for (i = 0; i < k; i++) + { + unsigned long j ; + + /* FIXME: what if size_t != unsigned long ??? + + want read in size_t but have to read in unsigned long to avoid + error from compiler */ + + int status = fscanf (stream, IN_FORMAT, &j); + + if (status != 1) + { + GSL_ERROR ("fscanf failed", GSL_EFAILED); + } + + data[i] = j; + } + + return GSL_SUCCESS; +} + |