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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2014-2016 PALO, Richard.
*/
#ifndef _SYS_NULL_H
#define _SYS_NULL_H
#include <sys/feature_tests.h>
#ifndef NULL
/*
* POSIX.1-2008 requires that the NULL macro be cast to type void *.
*/
#if !defined(__cplusplus)
#define NULL ((void *)0)
#else
/*
* ISO C++ requires that the NULL macro be a constant integral type evaluating
* to zero until C++11, and an integer or pointer literal with value zero from
* C++11 onwards.
*/
#if __cplusplus >= 201103L
#define NULL nullptr
#else
#if defined(_LP64)
#define NULL 0L
#else
#define NULL 0
#endif /* _LP64 */
#endif /* C++11 */
#endif /* !__cplusplus */
#endif /* NULL */
#endif /* _SYS_NULL_H */
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