1 /* 2 * Copyright (c) 2012-2017 Roberto E. Vargas Caballero 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 /* 7 * Portions copyright (c) 2018, ARM Limited and Contributors. 8 * All rights reserved. 9 */ 10 11 #ifndef _STDDEF_H 12 #define _STDDEF_H 13 14 #include <stddef_.h> 15 16 #ifndef NULL 17 #define NULL ((void *) 0) 18 #endif 19 20 #define offsetof(st, m) ((size_t)&(((st *)0)->m)) 21 22 #endif 23