| Harry Liebel | 0f702c6 | 2013-12-17 18:19:04 +0000 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 2003 Marcel Moolenaar |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | * |
| 26 | * $FreeBSD$ |
| 27 | */ |
| 28 | |
| 29 | #ifndef NULL |
| 30 | |
| 31 | #if !defined(__cplusplus) |
| 32 | #define NULL ((void *)0) |
| 33 | #else |
| 34 | #if __cplusplus >= 201103L |
| 35 | #define NULL nullptr |
| 36 | #elif defined(__GNUG__) && defined(__GNUC__) && __GNUC__ >= 4 |
| 37 | #define NULL __null |
| 38 | #else |
| 39 | #if defined(__LP64__) |
| 40 | #define NULL (0L) |
| 41 | #else |
| 42 | #define NULL 0 |
| 43 | #endif /* __LP64__ */ |
| 44 | #endif /* __GNUG__ */ |
| 45 | #endif /* !__cplusplus */ |
| 46 | |
| 47 | #endif |