/
SDL_byteorder.h
48 lines (38 loc) · 1.61 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2006 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
This library 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
13
Lesser General Public License for more details.
14
15
16
17
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19
Sam Lantinga
20
slouken@libsdl.org
21
22
23
24
25
26
27
*/
/* Macros for determining the byte-order of this platform */
#ifndef _SDL_byteorder_h
#define _SDL_byteorder_h
28
29
#include "SDL_config.h"
30
31
32
33
/* The two types of endianness */
#define SDL_LIL_ENDIAN 1234
#define SDL_BIG_ENDIAN 4321
34
#ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */
35
#if (defined(__i386__) || defined(__i386)) || \
36
defined(__ia64__) || defined(__x86_64__) || \
37
(defined(__alpha__) || defined(__alpha)) || \
38
39
(defined(__arm__) || defined(__thumb__)) || \
(defined(__sh__) || defined(__sh64__)) || \
40
(defined(__mips__) && defined(__MIPSEL__)) || \
41
defined(__SYMBIAN32__) || defined(__OS2__)
42
43
44
45
#define SDL_BYTEORDER SDL_LIL_ENDIAN
#else
#define SDL_BYTEORDER SDL_BIG_ENDIAN
#endif
46
#endif /* !SDL_BYTEORDER */
47
48
#endif /* _SDL_byteorder_h */