#ifndef _STDDEF_H
#define _STDDEF_H

/* Signed type of difference of two pointers.  */

typedef long ptrdiff_t;

/* Unsigned type of `sizeof' something.  */
#ifdef atarist
/* more kludgery.  types.h has one of these too; so we must test for it
   here and there, to let the first one win.  I hate C... */
#ifndef _TYPES_H		/* types.h loaded... */
typedef unsigned long size_t;
#endif
#else
typedef unsigned long size_t;
#endif

/* A null pointer constant.  */

#ifdef atarist
#ifndef NULL
#define NULL ((void *)0)
#endif
#else
#define NULL ((void *)0)
#endif

/* Offset of member MEMBER in a struct of type TYPE.  */

#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)

#endif /* _STDDEF_H */