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;
+}
+