#ifndef _STDDEF_H #define _STDDEF_H /* * Copyright (C) 2012 Michael Brown . * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ /** * @file * * Standard definitions * */ #include #define NULL ( ( void * ) 0 ) #define offsetof( type, member ) ( ( size_t ) &( ( type * ) NULL )->member ) #define container_of( ptr, type, member ) ( { \ const typeof ( ( ( type * ) NULL )->member ) *__mptr = (ptr); \ ( type * ) ( ( void * ) __mptr - offsetof ( type, member ) ); } ) #endif /* _STDDEF_H */