1 files changed, 32 insertions, 2 deletions
diff --git a/sched.c b/sched.c
index c07698b..6d53d9b 100644
--- a/sched.c
+++ b/sched.c
@@ -25,8 +25,7 @@
 
 #define ENOSUP 0
 
-#include <errno.h>
-
+#include "sched.h"
 #include "pthread.h"
 #include "implement.h"
 
@@ -150,3 +149,34 @@ int sched_get_priority_min(int policy)
   /* This is independent of scheduling policy in Win32. */
   return THREAD_PRIORITY_LOWEST;
 }
+
+int sched_yield(void)
+     /*
+      * ------------------------------------------------------
+      * DOCPUBLIC
+      *      This function indicates that the calling thread is
+      *      willing to give up some time slices to other threads.
+      *
+      * PARAMETERS
+      *      N/A
+      *
+      *
+      * DESCRIPTION
+      *      This function indicates that the calling thread is
+      *      willing to give up some time slices to other threads.
+      *      NOTE: Since this is part of POSIX 1003.1b
+      *                (realtime extensions), it is defined as returning
+      *                -1 if an error occurs and sets errno to the actual
+      *                error.
+      *
+      * RESULTS
+      *              0               successfully created semaphore,
+      *              ENOSYS          sched_yield not supported,
+      *
+      * ------------------------------------------------------
+      */
+{
+  Sleep(0);
+
+  return 0;
+}