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146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/*
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* Never include this file directly; use <limits.h> instead.
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*/
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/* Additional definitions from X/Open Portability Guide, Issue 4, Version 2
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System Interfaces and Headers, 4.16 <limits.h>
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Please note only the values which are not greater than the minimum
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stated in the standard document are listed. The `sysconf' functions
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should be used to obtain the actual value. */
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#ifndef _XOPEN_LIM_H
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#define _XOPEN_LIM_H 1
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#define __need_IOV_MAX
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#include <bits/stdio_lim.h>
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/* We do not provide fixed values for
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ARG_MAX Maximum length of argument to the `exec' function
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including environment data.
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ATEXIT_MAX Maximum number of functions that may be registered
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with `atexit'.
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CHILD_MAX Maximum number of simultaneous processes per real
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user ID.
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OPEN_MAX Maximum number of files that one process can have open
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at anyone time.
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PAGESIZE
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PAGE_SIZE Size of bytes of a page.
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PASS_MAX Maximum number of significant bytes in a password.
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We only provide a fixed limit for
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IOV_MAX Maximum number of `iovec' structures that one process has
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available for use with `readv' or writev'.
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if this is indeed fixed by the underlying system.
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*/
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/* Maximum number of `iovec' structures that one process has available
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for use with `readv' or writev'. */
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#define _XOPEN_IOV_MAX _POSIX_UIO_MAXIOV
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/* Maximum value of `digit' in calls to the `printf' and `scanf'
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functions. We have no limit, so return a reasonable value. */
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#define NL_ARGMAX _POSIX_ARG_MAX
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/* Maximum number of bytes in a `LANG' name. We have no limit. */
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#define NL_LANGMAX _POSIX2_LINE_MAX
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/* Maximum message number. We have no limit. */
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#define NL_MSGMAX INT_MAX
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/* Maximum number of bytes in N-to-1 collation mapping. We have no
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limit. */
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#if defined __USE_GNU || !defined __USE_XOPEN2K8
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# define NL_NMAX INT_MAX
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#endif
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/* Maximum set number. We have no limit. */
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#define NL_SETMAX INT_MAX
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/* Maximum number of bytes in a message. We have no limit. */
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#define NL_TEXTMAX INT_MAX
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/* Default process priority. */
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#define NZERO 20
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/* Number of bits in a word of type `int'. */
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#ifdef INT_MAX
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# if INT_MAX == 32767
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# define WORD_BIT 16
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# else
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# if INT_MAX == 2147483647
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# define WORD_BIT 32
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# else
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/* Safe assumption. */
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# define WORD_BIT 64
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# endif
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# endif
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#elif defined __INT_MAX__
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# if __INT_MAX__ == 32767
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# define WORD_BIT 16
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# else
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# if __INT_MAX__ == 2147483647
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# define WORD_BIT 32
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# else
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/* Safe assumption. */
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# define WORD_BIT 64
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# endif
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# endif
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#else
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# define WORD_BIT 32
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#endif
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/* Number of bits in a word of type `long int'. */
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#ifdef LONG_MAX
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# if LONG_MAX == 2147483647
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# define LONG_BIT 32
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# else
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/* Safe assumption. */
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# define LONG_BIT 64
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# endif
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#elif defined __LONG_MAX__
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# if __LONG_MAX__ == 2147483647
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# define LONG_BIT 32
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# else
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/* Safe assumption. */
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# define LONG_BIT 64
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# endif
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#else
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# include <bits/wordsize.h>
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# if __WORDSIZE == 64
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# define LONG_BIT 64
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# else
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# define LONG_BIT 32
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# endif
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#endif
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#endif /* bits/xopen_lim.h */
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