gnu1987/gnu1988/gcc-1.21/stddef.h

#ifndef _STDDEF_H
#define _STDDEF_H

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

typedef int ptrdiff_t;

/* Unsigned type of `sizeof' something.  */

typedef unsigned int size_t;

/* A null pointer constant.  */

#define NULL ((void *)0)

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

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

#endif /* _STDDEF_H */