include/SDL_byteorder.h
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FUNCTIONS
This source file includes following functions.
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library 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 GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id: SDL_byteorder.h,v 1.3.2.6 2001/02/17 18:24:20 hercules Exp $";
26 #endif
27
28 /* Macros for determining the byte-order of this platform */
29
30 #ifndef _SDL_byteorder_h
31 #define _SDL_byteorder_h
32
33 /* The two types of endianness */
34 #define SDL_LIL_ENDIAN 1234
35 #define SDL_BIG_ENDIAN 4321
36
37 /* Pardon the mess, I'm trying to determine the endianness of this host.
38 I'm doing it by preprocessor defines rather than some sort of configure
39 script so that application code can use this too. The "right" way would
40 be to dynamically generate this file on install, but that's a lot of work.
41 */
42 #if defined(__i386__) || defined(WIN32) || \
43 (defined(__alpha__) || defined(__alpha)) || \
44 defined(__arm__) || \
45 (defined(__mips__) && defined(__MIPSEL__))
46 #define SDL_BYTEORDER SDL_LIL_ENDIAN
47 #else
48 #define SDL_BYTEORDER SDL_BIG_ENDIAN
49 #endif
50
51 #endif /* _SDL_byteorder_h */