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a7927149 | 1 | /* Copyright (C) 1996, 1997, 1999, 2001 Free Software Foundation, Inc. |
2c6fe0bd UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
18 | ||
5107cf1d UD |
19 | /* |
20 | * Never include this file directly; use <limits.h> instead. | |
21 | */ | |
22 | ||
2c6fe0bd UD |
23 | /* Additional definitions from X/Open Portability Guide, Issue 4, Version 2 |
24 | System Interfaces and Headers, 4.16 <limits.h> | |
25 | ||
26 | Please note only the values which are not greater than the minimum | |
27 | stated in the standard document are listed. The `sysconf' functions | |
28 | should be used to obtain the actual value. */ | |
29 | ||
30 | #ifndef _XOPEN_LIM_H | |
2c6fe0bd UD |
31 | #define _XOPEN_LIM_H 1 |
32 | ||
219aa9e9 | 33 | #define __need_IOV_MAX |
9756dfe1 UD |
34 | #include <bits/stdio_lim.h> |
35 | ||
2c6fe0bd UD |
36 | /* We do not provide fixed values for |
37 | ||
38 | ARG_MAX Maximum length of argument to the `exec' function | |
39 | including environment data. | |
40 | ||
41 | ATEXIT_MAX Maximum number of functions that may be registered | |
42 | with `atexit'. | |
43 | ||
44 | CHILD_MAX Maximum number of simultaneous processes per real | |
45 | user ID. | |
46 | ||
47 | OPEN_MAX Maximum number of files that one process can have open | |
48 | at anyone time. | |
49 | ||
50 | PAGESIZE | |
51 | PAGE_SIZE Size of bytes of a page. | |
52 | ||
53 | PASS_MAX Maximum number of significant bytes in a password. | |
2c6fe0bd | 54 | |
ab58d620 | 55 | We only provide a fixed limit for |
2c6fe0bd | 56 | |
ab58d620 UD |
57 | IOV_MAX Maximum number of `iovec' structures that one process has |
58 | available for use with `readv' or writev'. | |
59 | ||
60 | if this is indeed fixed by the underlying system. | |
61 | */ | |
2c6fe0bd UD |
62 | |
63 | ||
64 | /* Maximum number of `iovec' structures that one process has available | |
65 | for use with `readv' or writev'. */ | |
66 | #define _XOPEN_IOV_MAX _POSIX_UIO_MAXIOV | |
67 | ||
68 | ||
69 | /* Maximum value of `digit' in calls to the `printf' and `scanf' | |
70 | functions. We have no limit, so return a reasonable value. */ | |
71 | #define NL_ARGMAX _POSIX_ARG_MAX | |
72 | ||
73 | /* Maximum number of bytes in a `LANG' name. We have no limit. */ | |
74 | #define NL_LANGMAX _POSIX2_LINE_MAX | |
75 | ||
76 | /* Maximum message number. We have no limit. */ | |
77 | #define NL_MSGMAX INT_MAX | |
78 | ||
79 | /* Maximum number of bytes in N-to-1 collation mapping. We have no | |
80 | limit. */ | |
81 | #define NL_NMAX INT_MAX | |
82 | ||
83 | /* Maximum set number. We have no limit. */ | |
84 | #define NL_SETMAX INT_MAX | |
85 | ||
86 | /* Maximum number of bytes in a message. We have no limit. */ | |
87 | #define NL_TEXTMAX INT_MAX | |
88 | ||
89 | /* Default process priority. */ | |
90 | #define NZERO 20 | |
91 | ||
219aa9e9 UD |
92 | |
93 | /* Number of bits in a word of type `int'. */ | |
ceb579a3 UD |
94 | #ifdef INT_MAX |
95 | # if INT_MAX == 32767 | |
96 | # define WORD_BIT 16 | |
97 | # else | |
98 | # if INT_MAX == 2147483647 | |
99 | # define WORD_BIT 32 | |
100 | # else | |
101 | /* Safe assumption. */ | |
102 | # define WORD_BIT 64 | |
103 | # endif | |
104 | # endif | |
105 | #elif defined __INT_MAX__ | |
106 | # if __INT_MAX__ == 32767 | |
107 | # define WORD_BIT 16 | |
219aa9e9 | 108 | # else |
ceb579a3 UD |
109 | # if __INT_MAX__ == 2147483647 |
110 | # define WORD_BIT 32 | |
111 | # else | |
219aa9e9 | 112 | /* Safe assumption. */ |
ceb579a3 UD |
113 | # define WORD_BIT 64 |
114 | # endif | |
219aa9e9 | 115 | # endif |
ceb579a3 UD |
116 | #else |
117 | # define WORD_BIT 32 | |
219aa9e9 UD |
118 | #endif |
119 | ||
120 | /* Number of bits in a word of type `long int'. */ | |
ceb579a3 UD |
121 | #ifdef LONG_MAX |
122 | # if LONG_MAX == 2147483647 | |
123 | # define LONG_BIT 32 | |
124 | # else | |
219aa9e9 | 125 | /* Safe assumption. */ |
ceb579a3 UD |
126 | # define LONG_BIT 64 |
127 | # endif | |
128 | #elif defined __LONG_MAX__ | |
129 | # if __LONG_MAX__ == 2147483647 | |
130 | # define LONG_BIT 32 | |
131 | # else | |
132 | /* Safe assumption. */ | |
133 | # define LONG_BIT 64 | |
134 | # endif | |
135 | #else | |
136 | # include <bits/wordsize.h> | |
137 | # if __WORDSIZE == 64 | |
138 | # define LONG_BIT 64 | |
139 | # else | |
140 | # define LONG_BIT 32 | |
141 | # endif | |
219aa9e9 UD |
142 | #endif |
143 | ||
5107cf1d | 144 | #endif /* bits/xopen_lim.h */ |