tornavis/source/blender/blenkernel/BKE_endian.h

45 lines
1.3 KiB
C

/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
* Are we little or big endian? From Harbison&Steele.
* BKE_ENDIANNESS(a) returns 1 if big endian and returns 0 if little endian
*/
#ifndef BKE_ENDIAN_H
#define BKE_ENDIAN_H
#define BKE_ENDIANNESS(a) { \
union { \
intptr_t l; \
char c[sizeof (intptr_t)]; \
} u; \
u.l = 1; \
a = (u.c[sizeof (intptr_t) - 1] == 1) ? 1 : 0; \
}
#endif