Current File : //proc/self/root/usr/include/bits/xopen_lim.h
/* Copyright (C) 1996-2018 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
<http://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 */
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