1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)stddef.h 5.2 (Berkeley) 05/17/90 8 */ 9 10 #ifndef _STDDEF_H_ 11 #define _STDDEF_H_ 12 #include <machine/machtypes.h> 13 14 typedef _PTRDIFF_T_ ptrdiff_t; 15 16 #ifdef _SIZE_T_ 17 typedef _SIZE_T_ size_t; 18 #undef _SIZE_T_ 19 #endif 20 21 #ifdef _WCHAR_T_ 22 typedef _WCHAR_T_ wchar_t; 23 #undef _WCHAR_T_ 24 #endif 25 26 #ifndef NULL 27 #define NULL 0 28 #endif 29 30 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 31 32 #endif /* _STDDEF_H_ */ 33