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/* 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;
}
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