1 files changed, 88 insertions, 0 deletions
diff --git a/gsl-1.9/roots/fdfsolver.c b/gsl-1.9/roots/fdfsolver.c
new file mode 100644
index 0000000..07d0b27
--- /dev/null
+++ b/gsl-1.9/roots/fdfsolver.c
@@ -0,0 +1,88 @@
+/* roots/fdfsolver.c
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 Reid Priedhorsky, Brian Gough
+ * 
+ * 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 <stdlib.h>
+#include <string.h>
+#include <gsl/gsl_errno.h>
+#include <gsl/gsl_roots.h>
+
+gsl_root_fdfsolver *
+gsl_root_fdfsolver_alloc (const gsl_root_fdfsolver_type * T)
+{
+
+  gsl_root_fdfsolver * s = (gsl_root_fdfsolver *) malloc (sizeof (gsl_root_fdfsolver));
+
+  if (s == 0)
+    {
+      GSL_ERROR_VAL ("failed to allocate space for root solver struct",
+                        GSL_ENOMEM, 0);
+    };
+
+  s->state = malloc (T->size);
+
+  if (s->state == 0)
+    {
+      free (s);         /* exception in constructor, avoid memory leak */
+
+      GSL_ERROR_VAL ("failed to allocate space for root solver state",
+                        GSL_ENOMEM, 0);
+    };
+
+  s->type = T ;
+  s->fdf = NULL;
+
+  return s;
+}
+
+int
+gsl_root_fdfsolver_set (gsl_root_fdfsolver * s, gsl_function_fdf * f, double root)
+{
+  s->fdf = f;
+  s->root = root;
+
+  return (s->type->set) (s->state, s->fdf, &(s->root));
+}
+
+int
+gsl_root_fdfsolver_iterate (gsl_root_fdfsolver * s)
+{
+  return (s->type->iterate) (s->state, s->fdf, &(s->root));
+}
+
+void
+gsl_root_fdfsolver_free (gsl_root_fdfsolver * s)
+{
+  free (s->state);
+  free (s);
+}
+
+const char *
+gsl_root_fdfsolver_name (const gsl_root_fdfsolver * s)
+{
+  return s->type->name;
+}
+
+double
+gsl_root_fdfsolver_root (const gsl_root_fdfsolver * s)
+{
+  return s->root;
+}
+
+