The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/bits/posix2_lim.h


$ cat -n /usr/include/x86_64-linux-gnu/bits/posix2_lim.h

     1	/* Copyright (C) 1991-2024 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 */