#ifndef _STDDEF_H#define _STDDEF_H#ifndef __sys_stdtypes_h/* This avoids lossage on Sunos but only if stdtypes.h comes first.   There's no way to win with the other order!  Sun lossage.  *//* Signed type of difference of two pointers.  */#ifndef _PTRDIFF_T	/* in case <sys/types.h> has defined it. */#ifndef _T_PTRDIFF#ifndef __PTRDIFF_T#ifndef _PTRDIFF_T_#ifndef ___int_ptrdiff_t_h#define _PTRDIFF_T#define _T_PTRDIFF#define __PTRDIFF_T#define _PTRDIFF_T_#define ___int_ptrdiff_t_htypedef long ptrdiff_t;#endif /* ___int_ptrdiff_t_h */#endif /* _PTRDIFF_T_ */#endif /* __PTRDIFF_T */#endif /* _T_PTRDIFF */#endif /* _PTRDIFF_T *//* Unsigned type of `sizeof' something.  */#ifndef _SIZE_T	/* in case <sys/types.h> has defined it. */#ifndef _T_SIZE#ifndef __SIZE_T#ifndef _SIZE_T_#ifndef ___int_size_t_h#define _SIZE_T#define _T_SIZE#define __SIZE_T#define _SIZE_T_#define ___int_size_t_htypedef unsigned long size_t;#endif /* ___int_size_t_h */#endif /* _SIZE_T_ */#endif /* __SIZE_T */#endif /* _T_SIZE */#endif /* _SIZE_T *//* Data type for wide chars.  */#ifndef _WCHAR_T#ifndef _WCHAR_T_#define _WCHAR_T#define _WCHAR_T_typedef int wchar_t;#endif#endif#endif /* __sys_stdtypes_h *//* A null pointer constant.  */#undef NULL		/* in case <stdio.h> has defined it. */#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 */