ReactOS  0.4.15-dev-3287-gfec35dc
btorder.h
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1 /* @(#)btorder.h 1.22 12/12/03 Copyright 1996-2012 J. Schilling */
2 /*
3  * Definitions for Bit and Byte ordering
4  *
5  * Copyright (c) 1996-2012 J. Schilling
6  */
7 /*
8  * The contents of this file are subject to the terms of the
9  * Common Development and Distribution License, Version 1.0 only
10  * (the "License"). You may not use this file except in compliance
11  * with the License.
12  *
13  * See the file CDDL.Schily.txt in this distribution for details.
14  *
15  * When distributing Covered Code, include this CDDL HEADER in each
16  * file and include the License file CDDL.Schily.txt from this distribution.
17  */
18 
19 
20 #ifndef _SCHILY_BTORDER_H
21 #define _SCHILY_BTORDER_H
22 
23 #ifndef _SCHILY_MCONFIG_H
24 #include <schily/mconfig.h> /* load bit/byte-oder from xmconfig.h */
25 #endif
26 
27 #ifndef _SCHILY_TYPES_H
28 #include <schily/types.h> /* try to load isa_defs.h on Solaris */
29 #endif
30 
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34 
35 /*
36  * Convert bit-order definitions from xconfig.h into our values
37  * and verify them.
38  */
39 #if defined(HAVE_C_BITFIELDS) && \
40  defined(BITFIELDS_LTOH)
41 #define _BIT_FIELDS_LTOH
42 #endif
43 
44 #if defined(HAVE_C_BITFIELDS) && \
45  defined(BITFIELDS_HTOL)
46 #define _BIT_FIELDS_HTOL
47 #endif
48 
49 #if defined(HAVE_C_BITFIELDS) && \
50  !defined(BITFIELDS_HTOL)
51 #define BITFIELDS_LTOH
52 #define _BIT_FIELDS_LTOH
53 #endif
54 
55 #if defined(_BIT_FIELDS_LTOH) && defined(_BIT_FIELDS_HTOL)
56 /*
57  * #error will not work for all compilers (e.g. sunos4)
58  * The following line will abort compilation on all compilers
59  * if none of the above is defined. And that's what we want.
60  */
61 error Only one of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL may be defined
62 
63 #include <schily/err_bit.h> /* Avoid "unknown directive" with K&R */
64 #endif
65 
66 
67 /*
68  * Convert byte-order definitions from xconfig.h into our values
69  * and verify them.
70  * Note that we cannot use the definitions _LITTLE_ENDIAN and _BIG_ENDIAN
71  * because they are used on IRIX-6.5 with different meaning.
72  */
73 #if defined(HAVE_C_BIGENDIAN) && \
74  !defined(WORDS_BIGENDIAN)
75 #define WORDS_LITTLEENDIAN
76 /* #define _LITTLE_ENDIAN */
77 #endif
78 
79 #if defined(HAVE_C_BIGENDIAN) && \
80  defined(WORDS_BIGENDIAN)
81 #undef WORDS_LITTLEENDIAN
82 /* #define _BIG_ENDIAN */
83 #endif
84 
85 #if defined(_BIT_FIELDS_LTOH) || defined(_BIT_FIELDS_HTOL)
86 /*
87  * Bitorder is already known.
88  */
89 #else
90 /*
91  * Bitorder not yet known.
92  */
93 # if defined(sun3) || defined(mc68000) || \
94  defined(sun4) || defined(__sparc) || defined(sparc) || \
95  defined(__hppa) || defined(_ARCH_PPC) || defined(_IBMR2)
96 # define _BIT_FIELDS_HTOL
97 # endif
98 
99 # if defined(__sgi) && defined(__mips)
100 # define _BIT_FIELDS_HTOL
101 # endif
102 
103 # if defined(__i386__) || defined(__i386) || defined(i386) || \
104  defined(__alpha__) || defined(__alpha) || defined(alpha) || \
105  defined(__arm__) || defined(__arm) || defined(arm)
106 # define _BIT_FIELDS_LTOH
107 # endif
108 
109 # if defined(__ppc__) || defined(ppc) || defined(__ppc) || \
110  defined(__PPC) || defined(powerpc) || defined(__powerpc__)
111 
112 # if defined(__BIG_ENDIAN__)
113 # define _BIT_FIELDS_HTOL
114 # else
115 # define _BIT_FIELDS_LTOH
116 # endif
117 # endif
118 #endif
119 
120 #ifdef __cplusplus
121 }
122 #endif
123 
124 #endif /* _SCHILY_BTORDER_H */
#define error(str)
Definition: mkdosfs.c:1605
int one
Definition: sehframes.cpp:28