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04277e02 | 1 | /* Copyright (C) 1996-2019 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 | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
2c6fe0bd UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
2c6fe0bd | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
2c6fe0bd | 17 | |
5107cf1d UD |
18 | /* |
19 | * Never include this file directly; use <limits.h> instead. | |
20 | */ | |
21 | ||
2c6fe0bd UD |
22 | /* Additional definitions from X/Open Portability Guide, Issue 4, Version 2 |
23 | System Interfaces and Headers, 4.16 <limits.h> | |
24 | ||
25 | Please note only the values which are not greater than the minimum | |
26 | stated in the standard document are listed. The `sysconf' functions | |
27 | should be used to obtain the actual value. */ | |
28 | ||
29 | #ifndef _XOPEN_LIM_H | |
2c6fe0bd UD |
30 | #define _XOPEN_LIM_H 1 |
31 | ||
32 | /* We do not provide fixed values for | |
33 | ||
34 | ARG_MAX Maximum length of argument to the `exec' function | |
35 | including environment data. | |
36 | ||
37 | ATEXIT_MAX Maximum number of functions that may be registered | |
38 | with `atexit'. | |
39 | ||
40 | CHILD_MAX Maximum number of simultaneous processes per real | |
41 | user ID. | |
42 | ||
43 | OPEN_MAX Maximum number of files that one process can have open | |
44 | at anyone time. | |
45 | ||
46 | PAGESIZE | |
47 | PAGE_SIZE Size of bytes of a page. | |
48 | ||
49 | PASS_MAX Maximum number of significant bytes in a password. | |
2c6fe0bd | 50 | |
ab58d620 | 51 | We only provide a fixed limit for |
2c6fe0bd | 52 | |
ab58d620 UD |
53 | IOV_MAX Maximum number of `iovec' structures that one process has |
54 | available for use with `readv' or writev'. | |
55 | ||
56 | if this is indeed fixed by the underlying system. | |
57 | */ | |
2c6fe0bd UD |
58 | |
59 | ||
37f802f8 ZW |
60 | /* Maximum number of `iovec' structures that may be used in a single call |
61 | to `readv', `writev', etc. */ | |
2c6fe0bd UD |
62 | #define _XOPEN_IOV_MAX _POSIX_UIO_MAXIOV |
63 | ||
37f802f8 ZW |
64 | #include <bits/uio_lim.h> |
65 | #ifdef __IOV_MAX | |
66 | # define IOV_MAX __IOV_MAX | |
67 | #else | |
68 | # undef IOV_MAX | |
69 | #endif | |
2c6fe0bd UD |
70 | |
71 | /* Maximum value of `digit' in calls to the `printf' and `scanf' | |
72 | functions. We have no limit, so return a reasonable value. */ | |
73 | #define NL_ARGMAX _POSIX_ARG_MAX | |
74 | ||
75 | /* Maximum number of bytes in a `LANG' name. We have no limit. */ | |
76 | #define NL_LANGMAX _POSIX2_LINE_MAX | |
77 | ||
78 | /* Maximum message number. We have no limit. */ | |
79 | #define NL_MSGMAX INT_MAX | |
80 | ||
81 | /* Maximum number of bytes in N-to-1 collation mapping. We have no | |
82 | limit. */ | |
eb64b6d4 JM |
83 | #if defined __USE_GNU || !defined __USE_XOPEN2K8 |
84 | # define NL_NMAX INT_MAX | |
85 | #endif | |
2c6fe0bd UD |
86 | |
87 | /* Maximum set number. We have no limit. */ | |
88 | #define NL_SETMAX INT_MAX | |
89 | ||
90 | /* Maximum number of bytes in a message. We have no limit. */ | |
91 | #define NL_TEXTMAX INT_MAX | |
92 | ||
93 | /* Default process priority. */ | |
94 | #define NZERO 20 | |
95 | ||
219aa9e9 UD |
96 | |
97 | /* Number of bits in a word of type `int'. */ | |
ceb579a3 UD |
98 | #ifdef INT_MAX |
99 | # if INT_MAX == 32767 | |
100 | # define WORD_BIT 16 | |
101 | # else | |
102 | # if INT_MAX == 2147483647 | |
103 | # define WORD_BIT 32 | |
104 | # else | |
105 | /* Safe assumption. */ | |
106 | # define WORD_BIT 64 | |
107 | # endif | |
108 | # endif | |
109 | #elif defined __INT_MAX__ | |
110 | # if __INT_MAX__ == 32767 | |
111 | # define WORD_BIT 16 | |
219aa9e9 | 112 | # else |
ceb579a3 UD |
113 | # if __INT_MAX__ == 2147483647 |
114 | # define WORD_BIT 32 | |
115 | # else | |
219aa9e9 | 116 | /* Safe assumption. */ |
ceb579a3 UD |
117 | # define WORD_BIT 64 |
118 | # endif | |
219aa9e9 | 119 | # endif |
ceb579a3 UD |
120 | #else |
121 | # define WORD_BIT 32 | |
219aa9e9 UD |
122 | #endif |
123 | ||
124 | /* Number of bits in a word of type `long int'. */ | |
ceb579a3 UD |
125 | #ifdef LONG_MAX |
126 | # if LONG_MAX == 2147483647 | |
127 | # define LONG_BIT 32 | |
128 | # else | |
219aa9e9 | 129 | /* Safe assumption. */ |
ceb579a3 UD |
130 | # define LONG_BIT 64 |
131 | # endif | |
132 | #elif defined __LONG_MAX__ | |
133 | # if __LONG_MAX__ == 2147483647 | |
134 | # define LONG_BIT 32 | |
135 | # else | |
136 | /* Safe assumption. */ | |
137 | # define LONG_BIT 64 | |
138 | # endif | |
139 | #else | |
140 | # include <bits/wordsize.h> | |
141 | # if __WORDSIZE == 64 | |
142 | # define LONG_BIT 64 | |
143 | # else | |
144 | # define LONG_BIT 32 | |
145 | # endif | |
219aa9e9 UD |
146 | #endif |
147 | ||
5107cf1d | 148 | #endif /* bits/xopen_lim.h */ |