1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SA_STDDEF_H 27 #define _SA_STDDEF_H 28 29 /* 30 * Exported interfaces for standalone's subset of libc's <stddef.h>. 31 * All standalone code *must* use this header rather than libc's. 32 */ 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #ifndef NULL 39 #define NULL 0 40 #endif 41 42 #ifndef offsetof 43 #if defined(__GNUC__) 44 #define offsetof(s, m) __builtin_offsetof(s, m) 45 #else 46 #define offsetof(s, m) ((size_t)(&(((s *)0)->m))) 47 #endif 48 #endif 49 50 #ifdef __cplusplus 51 } 52 #endif 53 54 #endif /* _SA_STDDEF_H */