1/* $NetBSD: null.h,v 1.9 2010/07/06 11:56:20 kleink Exp $ */
2
3/*
4 * Written by Klaus Klein <kleink@NetBSD.org>, December 22, 1999.
5 * Public domain.
6 */
7
8#ifndef _SYS_NULL_H_
9#define _SYS_NULL_H_
10#ifndef NULL
11#if !defined(__GNUG__) || __GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 90)
12#if !defined(__cplusplus)
13#define NULL ((void *)0)
14#else
15#define NULL 0
16#endif /* !__cplusplus */
17#else
18#define NULL __null
19#endif
20#endif
21#endif /* _SYS_NULL_H_ */
22