1 files changed, 85 insertions, 0 deletions
diff --git a/gsl-1.9/min/test_funcs.c b/gsl-1.9/min/test_funcs.c
new file mode 100644
index 0000000..9d45be2
--- /dev/null
+++ b/gsl-1.9/min/test_funcs.c
@@ -0,0 +1,85 @@
+/* min/test_funcs.c
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 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 <gsl/gsl_math.h>
+#include <gsl/gsl_min.h>
+
+#include "test.h"
+
+gsl_function create_function (double (*f)(double, void *)) 
+{
+  gsl_function F ;
+  F.function = f ;
+  F.params = 0 ;
+  return F ;
+}
+
+double
+f_cos (double x, void * p)
+{
+  p = 0;  /* avoid warning about unused parameter */
+  return cos(x);
+}
+
+/* f(x) = x^4 - 1 */
+/* minimum at x = 0 */
+
+double
+func1 (double x, void * p)
+{
+  p = 0;  /* avoid warning about unused parameter */
+  return pow (x, 4.0) - 1;
+}
+
+/* f(x) = sqrt(|x|) */
+/* minimum at x = 0 */
+
+double
+func2 (double x, void * p)
+{
+  p = 0;  /* avoid warning about unused parameter */
+  return sqrt(fabs(x));
+}
+
+
+/* f(x) = 1 for x < 1 and -exp(-x) for x >= 1 */
+/* minimum at x = 1 */
+
+double
+func3 (double x, void * p)
+{
+  p = 0;  /* avoid warning about unused parameter */
+
+  if (x < 1)
+    return 1 ;
+  else
+    return - exp(-x) ;
+}
+
+/* f(x) = x - 30/(1+1e5*(x-0.8)**2) */
+/* minimum near x = 0.8 */
+
+double
+func4 (double x, void * p)
+{
+  p = 0;  /* avoid warning about unused parameter */
+
+  return x - 30.0 / (1.0 + 1e5 * pow(x-0.8, 2.0));
+}
+