| /* Copyright (C) 1996-2021 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <https://www.gnu.org/licenses/>. */ |
| |
| /* |
| * Never include this file directly; use <limits.h> instead. |
| */ |
| |
| /* Additional definitions from X/Open Portability Guide, Issue 4, Version 2 |
| System Interfaces and Headers, 4.16 <limits.h> |
| |
| Please note only the values which are not greater than the minimum |
| stated in the standard document are listed. The `sysconf' functions |
| should be used to obtain the actual value. */ |
| |
| #ifndef _XOPEN_LIM_H |
| #define _XOPEN_LIM_H 1 |
| |
| /* We do not provide fixed values for |
| |
| ARG_MAX Maximum length of argument to the `exec' function |
| including environment data. |
| |
| ATEXIT_MAX Maximum number of functions that may be registered |
| with `atexit'. |
| |
| CHILD_MAX Maximum number of simultaneous processes per real |
| user ID. |
| |
| OPEN_MAX Maximum number of files that one process can have open |
| at anyone time. |
| |
| PAGESIZE |
| PAGE_SIZE Size of bytes of a page. |
| |
| PASS_MAX Maximum number of significant bytes in a password. |
| |
| We only provide a fixed limit for |
| |
| IOV_MAX Maximum number of `iovec' structures that one process has |
| available for use with `readv' or writev'. |
| |
| if this is indeed fixed by the underlying system. |
| */ |
| |
| |
| /* Maximum number of `iovec' structures that may be used in a single call |
| to `readv', `writev', etc. */ |
| #define _XOPEN_IOV_MAX _POSIX_UIO_MAXIOV |
| |
| #include <bits/uio_lim.h> |
| #ifdef __IOV_MAX |
| # define IOV_MAX __IOV_MAX |
| #else |
| # undef IOV_MAX |
| #endif |
| |
| /* Maximum value of `digit' in calls to the `printf' and `scanf' |
| functions. We have no limit, so return a reasonable value. */ |
| #define NL_ARGMAX _POSIX_ARG_MAX |
| |
| /* Maximum number of bytes in a `LANG' name. We have no limit. */ |
| #define NL_LANGMAX _POSIX2_LINE_MAX |
| |
| /* Maximum message number. We have no limit. */ |
| #define NL_MSGMAX INT_MAX |
| |
| /* Maximum number of bytes in N-to-1 collation mapping. We have no |
| limit. */ |
| #if defined __USE_GNU || !defined __USE_XOPEN2K8 |
| # define NL_NMAX INT_MAX |
| #endif |
| |
| /* Maximum set number. We have no limit. */ |
| #define NL_SETMAX INT_MAX |
| |
| /* Maximum number of bytes in a message. We have no limit. */ |
| #define NL_TEXTMAX INT_MAX |
| |
| /* Default process priority. */ |
| #define NZERO 20 |
| |
| |
| /* Number of bits in a word of type `int'. */ |
| #ifdef INT_MAX |
| # if INT_MAX == 32767 |
| # define WORD_BIT 16 |
| # else |
| # if INT_MAX == 2147483647 |
| # define WORD_BIT 32 |
| # else |
| /* Safe assumption. */ |
| # define WORD_BIT 64 |
| # endif |
| # endif |
| #elif defined __INT_MAX__ |
| # if __INT_MAX__ == 32767 |
| # define WORD_BIT 16 |
| # else |
| # if __INT_MAX__ == 2147483647 |
| # define WORD_BIT 32 |
| # else |
| /* Safe assumption. */ |
| # define WORD_BIT 64 |
| # endif |
| # endif |
| #else |
| # define WORD_BIT 32 |
| #endif |
| |
| /* Number of bits in a word of type `long int'. */ |
| #ifdef LONG_MAX |
| # if LONG_MAX == 2147483647 |
| # define LONG_BIT 32 |
| # else |
| /* Safe assumption. */ |
| # define LONG_BIT 64 |
| # endif |
| #elif defined __LONG_MAX__ |
| # if __LONG_MAX__ == 2147483647 |
| # define LONG_BIT 32 |
| # else |
| /* Safe assumption. */ |
| # define LONG_BIT 64 |
| # endif |
| #else |
| # include <bits/wordsize.h> |
| # if __WORDSIZE == 64 |
| # define LONG_BIT 64 |
| # else |
| # define LONG_BIT 32 |
| # endif |
| #endif |
| |
| #endif /* bits/xopen_lim.h */ |