X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fdaemon%2Futils_random.h;h=ff0022ebccb26dfecd796b29e40c14896ce34d1f;hb=48efd3deb4c9139fd060ff3d289896e9031bcc7c;hp=e25ae9b67829c4579406e7d96e912f1bcdeab4af;hpb=3fb6fe5776c14f41879249f4147c0b8924b39cc1;p=collectd.git

diff --git a/src/daemon/utils_random.h b/src/daemon/utils_random.h
index e25ae9b6..ff0022eb 100644
--- a/src/daemon/utils_random.h
+++ b/src/daemon/utils_random.h
@@ -24,12 +24,15 @@
  *   Florian Forster <octo at collectd.org>
  **/
 
+#ifndef UTILS_RANDOM_H
+#define UTILS_RANDOM_H 1
+
 /**
  * Returns a random double value in the range [0..1), i.e. excluding 1.
  *
  * This function is thread- and reentrant-safe.
  */
-double cdrand_d();
+double cdrand_d(void);
 
 /**
  * cdrand_u returns a random uint32_t value uniformly distributed in the range
@@ -37,7 +40,7 @@ double cdrand_d();
  *
  * This function is thread- and reentrant-safe.
  */
-uint32_t cdrand_u();
+uint32_t cdrand_u(void);
 
 /**
  * Returns a random long between min and max, inclusively.
@@ -46,3 +49,5 @@ uint32_t cdrand_u();
  * outside the intended range. This function is thread- and reentrant-safe.
  */
 long cdrand_range(long min, long max);
+
+#endif /* !UTILS_RANDOM_H */