stddef.h

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/* stddef.h
 * Copyright (c) 1990 Intel Corporation, ALL RIGHTS RESERVED.
 *
 * stddef.h  - standard definitions
 */

#ifndef _stddefh
#define _stddefh

#ifndef NULL
#define NULL ((void *)0)
#endif

#ifndef _size_t
#define _size_t
typedef unsigned size_t;  /* result of sizeof operator */
#endif

#define offsetof(s_type, memb)  ((size_t)(char *)&((s_type *)0)->memb)

typedef int ptrdiff_t;  /* result of subtracting two pointers */

/* non-ANSI definitions */
#define NUL '\0'  /* string terminator */

#endif /* _stddefh */