include/stddef.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _STDDEF_H_
  20 #define _STDDEF_H_
  21
  22 #include <sys/types.h>
  23
  24 #ifndef NULL
  25   #define NULL ((void*)0)
  26 #endif
  27
  28 #ifndef offsetof
  29   #define offsetof(struct_type, member) ((size_t)&(((struct_type*)0)->member))
  30 #endif
  31
  32 typedef int wchar_t;
  33
  34 #endif