1/* Copyright (C) 1991-2025 Free Software Foundation, Inc.
 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 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.
 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   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <https://www.gnu.org/licenses/>.  */
17
18/*
19 * Never include this file directly; include <limits.h> instead.
20 */
21
22#ifndef	_BITS_POSIX2_LIM_H
23#define	_BITS_POSIX2_LIM_H	1
24
25
26/* The maximum `ibase' and `obase' values allowed by the `bc' utility.  */
27#define	_POSIX2_BC_BASE_MAX		99
28
29/* The maximum number of elements allowed in an array by the `bc' utility.  */
30#define	_POSIX2_BC_DIM_MAX		2048
31
32/* The maximum `scale' value allowed by the `bc' utility.  */
33#define	_POSIX2_BC_SCALE_MAX		99
34
35/* The maximum length of a string constant accepted by the `bc' utility.  */
36#define	_POSIX2_BC_STRING_MAX		1000
37
38/* The maximum number of weights that can be assigned to an entry of
39   the LC_COLLATE `order' keyword in the locale definition file.  */
40#define	_POSIX2_COLL_WEIGHTS_MAX	2
41
42/* The maximum number of expressions that can be nested
43   within parentheses by the `expr' utility.  */
44#define	_POSIX2_EXPR_NEST_MAX		32
45
46/* The maximum length, in bytes, of an input line.  */
47#define	_POSIX2_LINE_MAX		2048
48
49/* The maximum number of repeated occurrences of a regular expression
50   permitted when using the interval notation `\{M,N\}'.  */
51#define	_POSIX2_RE_DUP_MAX		255
52
53/* The maximum number of bytes in a character class name.  We have no
54   fixed limit, 2048 is a high number.  */
55#define	_POSIX2_CHARCLASS_NAME_MAX	14
56
57
58/* These values are implementation-specific,
59   and may vary within the implementation.
60   Their precise values can be obtained from sysconf.  */
61
62#ifndef	BC_BASE_MAX
63#define	BC_BASE_MAX		_POSIX2_BC_BASE_MAX
64#endif
65#ifndef	BC_DIM_MAX
66#define	BC_DIM_MAX		_POSIX2_BC_DIM_MAX
67#endif
68#ifndef	BC_SCALE_MAX
69#define	BC_SCALE_MAX		_POSIX2_BC_SCALE_MAX
70#endif
71#ifndef	BC_STRING_MAX
72#define	BC_STRING_MAX		_POSIX2_BC_STRING_MAX
73#endif
74#ifndef	COLL_WEIGHTS_MAX
75#define	COLL_WEIGHTS_MAX	255
76#endif
77#ifndef	EXPR_NEST_MAX
78#define	EXPR_NEST_MAX		_POSIX2_EXPR_NEST_MAX
79#endif
80#ifndef	LINE_MAX
81#define	LINE_MAX		_POSIX2_LINE_MAX
82#endif
83#ifndef	CHARCLASS_NAME_MAX
84#define	CHARCLASS_NAME_MAX	2048
85#endif
86
87/* This value is defined like this in regex.h.  */
88#define	RE_DUP_MAX (0x7fff)
89
90#endif	/* bits/posix2_lim.h */