1 /* Copyright (C) 1991-2022 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 */ 91