--- /dev/null
+/*
+ * stddef.h
+ *
+ * standard type definitions. Based on the Single UNIX(r) Specification,
+ * Version 2
+ *
+ * This file is part of the ReactOS Operating System.
+ *
+ * Contributors:
+ * Created by KJK::Hyperion <noog@libero.it>
+ *
+ * THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ * This source code is offered for use in the public domain. You may
+ * use, modify or distribute it freely.
+ *
+ * This code is distributed in the hope that it will be useful but
+ * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ * DISCLAMED. This includes but is not limited to warranties of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+#ifndef __STDDEF_H_INCLUDED__
+#define __STDDEF_H_INCLUDED__
+
+/* INCLUDES */
+#include <sys/types.h>
+
+/* OBJECTS */
+
+/* TYPES */
+typedef signed long int ptrdiff_t;
+typedef unsigned short int wchar_t;
+
+/* CONSTANTS */
+#ifndef NULL
+#define NULL ((void *)(0)) /* Null pointer constant. */
+#endif
+
+/* PROTOTYPES */
+
+/* MACROS */
+#define offsetof(t,m) ((size_t) &((t *)0)->m)
+
+#endif /* __STDDEF_H_INCLUDED__ */
+
+/* EOF */
+