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68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2004 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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"@(#) $Id: SDL_byteorder.h,v 1.10 2005/09/08 06:49:20 icculus Exp $";
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#endif
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/* Macros for determining the byte-order of this platform */
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#ifndef _SDL_byteorder_h
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#define _SDL_byteorder_h
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/* The two types of endianness */
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#define SDL_LIL_ENDIAN 1234
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#define SDL_BIG_ENDIAN 4321
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#ifdef __linux__
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# include <endian.h>
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# if BYTE_ORDER == LITTLE_ENDIAN
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# define SDL_BYTEORDER SDL_LIL_ENDIAN
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# else
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# define SDL_BYTEORDER SDL_BIG_ENDIAN
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# endif
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#else
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/* Pardon the mess, I'm trying to determine the endianness of this host.
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I'm doing it by preprocessor defines rather than some sort of configure
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script so that application code can use this too. The "right" way would
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be to dynamically generate this file on install, but that's a lot of work.
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*/
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#if (defined(__i386__) || defined(__i386)) || \
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defined(__ia64__) || defined(WIN32) || \
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(defined(__alpha__) || defined(__alpha)) || \
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(defined(__arm__) || defined(__thumb__)) || \
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(defined(__sh__) || defined(__sh64__)) || \
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(defined(__mips__) && defined(__MIPSEL__)) || \
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defined(__SYMBIAN32__) || \
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defined(__x86_64__) || \
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defined(__LITTLE_ENDIAN__)
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#define SDL_BYTEORDER SDL_LIL_ENDIAN
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#else
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#define SDL_BYTEORDER SDL_BIG_ENDIAN
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#endif
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#endif /* __linux__ */
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#endif /* _SDL_byteorder_h */
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