Global: collectd → libsortnetwork

[sort-networks.git] / src / sn_random.c

diff --git a/src/sn_random.c b/src/sn_random.c
index 368087f..5a156d2 100644 (file)
--- a/src/sn_random.c
+++ b/src/sn_random.c
@@ -1,6 +1,6 @@
 /**
- * collectd - src/sn_random.c
- * Copyright (C) 2008  Florian octo Forster
+ * libsortnetwork - src/sn_random.c
+ * Copyright (C) 2008-2010  Florian octo Forster
  *
  * 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
@@ -16,11 +16,15 @@
  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  *
  * Authors:
- *   Florian octo Forster <octo at verplant.org>
+ *   Florian octo Forster <ff at octo.it>
  **/
 
-#define _ISOC99_SOURCE
-#define _POSIX_C_SOURCE 200112L
+#ifndef _ISOC99_SOURCE
+# define _ISOC99_SOURCE
+#endif
+#ifndef _POSIX_C_SOURCE
+# define _POSIX_C_SOURCE 200112L
+#endif
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -140,4 +144,9 @@ int sn_bounded_random (int min, int max)
   return (rand);
 } /* int sn_bounded_random */
 
+double sn_double_random (void)
+{
+  return (((double) sn_random ()) / (((double) RAND_MAX) + 1.0));
+} /* double sn_double_random */
+
 /* vim: set shiftwidth=2 softtabstop=2 : */