1/*
2 ---------------------------------------------------------------------------
3 Copyright (c) 2003, Dr Brian Gladman, Worcester, UK.   All rights reserved.
4
5 LICENSE TERMS
6
7 The free distribution and use of this software in both source and binary
8 form is allowed (with or without changes) provided that:
9
10   1. distributions of this source code include the above copyright
11      notice, this list of conditions and the following disclaimer;
12
13   2. distributions in binary form include the above copyright
14      notice, this list of conditions and the following disclaimer
15      in the documentation and/or other associated materials;
16
17   3. the copyright holder's name is not used to endorse products
18      built using this software without specific written permission.
19
20 ALTERNATIVELY, provided that this notice is retained in full, this product
21 may be distributed under the terms of the GNU General Public License (GPL),
22 in which case the provisions of the GPL apply INSTEAD OF those given above.
23
24 DISCLAIMER
25
26 This software is provided 'as is' with no explicit or implied warranties
27 in respect of its properties, including, but not limited to, correctness
28 and/or fitness for purpose.
29 ---------------------------------------------------------------------------
30 Issue 31/01/2006
31*/
32
33#ifndef EDEFS_H
34#define EDEFS_H
35#if defined(__cplusplus)
36extern "C"
37{
38#endif
39
40#define IS_LITTLE_ENDIAN   1234 /* byte 0 is least significant (i386) */
41#define IS_BIG_ENDIAN      4321 /* byte 0 is most significant (mc68k) */
42
43#if defined(__GNUC__) || defined(__GNU_LIBRARY__)
44#  if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
45#    include <sys/endian.h>
46#  elif defined( BSD ) && ( BSD >= 199103 ) || defined( __DJGPP__ ) || defined( __CYGWIN32__ )
47#      include <machine/endian.h>
48#  elif defined(__APPLE__)
49#    if defined(__BIG_ENDIAN__) && !defined( BIG_ENDIAN )
50#      define BIG_ENDIAN
51#    elif defined(__LITTLE_ENDIAN__) && !defined( LITTLE_ENDIAN )
52#      define LITTLE_ENDIAN
53#    endif
54#  elif !defined( __MINGW32__ )
55#    include <endian.h>
56#    if !defined(__BEOS__)
57#      include <byteswap.h>
58#    endif
59#  endif
60#endif
61
62#if !defined(PLATFORM_BYTE_ORDER)
63#  if defined(LITTLE_ENDIAN) || defined(BIG_ENDIAN)
64#    if    defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN)
65#      define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
66#    elif !defined(LITTLE_ENDIAN) &&  defined(BIG_ENDIAN)
67#      define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
68#    elif defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
69#      define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
70#    elif defined(BYTE_ORDER) && (BYTE_ORDER == BIG_ENDIAN)
71#      define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
72#    endif
73#  elif defined(_LITTLE_ENDIAN) || defined(_BIG_ENDIAN)
74#    if    defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)
75#      define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
76#    elif !defined(_LITTLE_ENDIAN) &&  defined(_BIG_ENDIAN)
77#      define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
78#    elif defined(_BYTE_ORDER) && (_BYTE_ORDER == _LITTLE_ENDIAN)
79#      define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
80#    elif defined(_BYTE_ORDER) && (_BYTE_ORDER == _BIG_ENDIAN)
81#      define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
82#   endif
83#  elif defined(__LITTLE_ENDIAN__) || defined(__BIG_ENDIAN__)
84#    if    defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__)
85#      define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
86#    elif !defined(__LITTLE_ENDIAN__) &&  defined(__BIG_ENDIAN__)
87#      define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
88#    elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __LITTLE_ENDIAN__)
89#      define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
90#    elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __BIG_ENDIAN__)
91#      define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
92#    endif
93#  endif
94#endif
95
96/*  if the platform is still unknown, try to find its byte order    */
97/*  from commonly used machine defines                              */
98
99#if !defined(PLATFORM_BYTE_ORDER)
100
101#if   defined( __alpha__ ) || defined( __alpha ) || defined( i386 )       || \
102      defined( __i386__ )  || defined( _M_I86 )  || defined( _M_IX86 )    || \
103      defined( __OS2__ )   || defined( sun386 )  || defined( __TURBOC__ ) || \
104      defined( vax )       || defined( vms )     || defined( VMS )        || \
105      defined( __VMS )     || defined( _M_X64 )
106#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
107
108#elif defined( AMIGA )    || defined( applec )  || defined( __AS400__ )  || \
109      defined( _CRAY )    || defined( __hppa )  || defined( __hp9000 )   || \
110      defined( ibm370 )   || defined( mc68000 ) || defined( m68k )       || \
111      defined( __MRC__ )  || defined( __MVS__ ) || defined( __MWERKS__ ) || \
112      defined( sparc )    || defined( __sparc)  || defined( SYMANTEC_C ) || \
113      defined( __TANDEM ) || defined( THINK_C ) || defined( __VMCMS__ )  || \
114	  defined( __VOS__ )
115#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
116
117#elif 0     /* **** EDIT HERE IF NECESSARY **** */
118#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
119#elif 0     /* **** EDIT HERE IF NECESSARY **** */
120#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
121#else
122#  error Please edit edefs.h (lines 117 or 119) to set the platform byte order
123#endif
124
125#endif
126
127#if defined(__cplusplus)
128}
129#endif
130#endif
131