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BKE_endian.h « blenkernel « blender « source - git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
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/**
 * $Id$
 *
 * ***** BEGIN GPL/BL DUAL 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. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * 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/BL DUAL 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 {  \
		long l;  \
		char c[sizeof (long)];  \
	} u;  \
	u.l = 1;  \
	a = (u.c[sizeof (long) - 1] == 1) ? 1 : 0;  \
}

#endif