1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/* Copyright (C) 1994 - 1996
Olav Woelfelschneider (wosch@rbg.informatik.th-darmstadt.de)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.
*/
#ifndef _McEndian_h_
#define _McEndian_h_
#define SWAPW(w) ((((w)&0xFF)<<8)|(((w)>>8)&0xFF))
#define SWAPL(w) ((((w)&0xFF)<<24)|(((w)&0xFF00)<<8)|(((w)&0xFF0000)>>8)|(((w)>>24)))
#if !defined(USE_BIG_ENDIAN) && !defined(USE_LITTLE_ENDIAN)
# include <endian.h>
# if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN)
# if BYTE_ORDER == BIG_ENDIAN
# define USE_BIG_ENDIAN
# else
# if BYTE_ORDER == LITTLE_ENDIAN
# define USE_LITTLE_ENDIAN
# else
# error Can not handle this endianess: "BYTE_ORDER"
# endif
# endif
# endif
#endif
#ifdef USE_BIG_ENDIAN
# ifdef USE_LITTLE_ENDIAN
# error Both USE_LITTLE_ENDIAN and USE_BIG_ENDIAN are defined
# endif
# define LITTLEW(x) SWAPW(x)
# define BIGW(x) (x)
# define LITTLEL(x) SWAPL(x)
# define BIGL(x) (x)
#else
# ifndef USE_LITTLE_ENDIAN
# error Neither USE_LITTLE_ENDIAN nor USE_BIG_ENDIAN is defined
# endif
# define LITTLEW(x) (x)
# define BIGW(x) SWAPW(x)
# define LITTLEL(x) (x)
# define BIGL(x) SWAPL(x)
#endif
#endif /* _McEndian_h_ */
|
