1    	/* Copyright (C) 1996-2015 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   	   <http://www.gnu.org/licenses/>.  */
17   	
18   	/*
19   	 * Never include this file directly; use <limits.h> instead.
20   	 */
21   	
22   	/* Additional definitions from X/Open Portability Guide, Issue 4, Version 2
23   	   System Interfaces and Headers, 4.16 <limits.h>
24   	
25   	   Please note only the values which are not greater than the minimum
26   	   stated in the standard document are listed.  The `sysconf' functions
27   	   should be used to obtain the actual value.  */
28   	
29   	#ifndef _XOPEN_LIM_H
30   	#define _XOPEN_LIM_H	1
31   	
32   	#define __need_IOV_MAX
33   	#include <bits/stdio_lim.h>
34   	
35   	/* We do not provide fixed values for
36   	
37   	   ARG_MAX	Maximum length of argument to the `exec' function
38   			including environment data.
39   	
40   	   ATEXIT_MAX	Maximum number of functions that may be registered
41   			with `atexit'.
42   	
43   	   CHILD_MAX	Maximum number of simultaneous processes per real
44   			user ID.
45   	
46   	   OPEN_MAX	Maximum number of files that one process can have open
47   			at anyone time.
48   	
49   	   PAGESIZE
50   	   PAGE_SIZE	Size of bytes of a page.
51   	
52   	   PASS_MAX	Maximum number of significant bytes in a password.
53   	
54   	   We only provide a fixed limit for
55   	
56   	   IOV_MAX	Maximum number of `iovec' structures that one process has
57   			available for use with `readv' or writev'.
58   	
59   	   if this is indeed fixed by the underlying system.
60   	*/
61   	
62   	
63   	/* Maximum number of `iovec' structures that one process has available
64   	   for use with `readv' or writev'.  */
65   	#define	_XOPEN_IOV_MAX	_POSIX_UIO_MAXIOV
66   	
67   	
68   	/* Maximum value of `digit' in calls to the `printf' and `scanf'
69   	   functions.  We have no limit, so return a reasonable value.  */
70   	#define NL_ARGMAX	_POSIX_ARG_MAX
71   	
72   	/* Maximum number of bytes in a `LANG' name.  We have no limit.  */
73   	#define NL_LANGMAX	_POSIX2_LINE_MAX
74   	
75   	/* Maximum message number.  We have no limit.  */
76   	#define NL_MSGMAX	INT_MAX
77   	
78   	/* Maximum number of bytes in N-to-1 collation mapping.  We have no
79   	   limit.  */
80   	#define NL_NMAX		INT_MAX
81   	
82   	/* Maximum set number.  We have no limit.  */
83   	#define NL_SETMAX	INT_MAX
84   	
85   	/* Maximum number of bytes in a message.  We have no limit.  */
86   	#define NL_TEXTMAX	INT_MAX
87   	
88   	/* Default process priority.  */
89   	#define NZERO		20
90   	
91   	
92   	/* Number of bits in a word of type `int'.  */
93   	#ifdef INT_MAX
94   	# if INT_MAX == 32767
95   	#  define WORD_BIT	16
96   	# else
97   	#  if INT_MAX == 2147483647
98   	#   define WORD_BIT	32
99   	#  else
100  	/* Safe assumption.  */
101  	#   define WORD_BIT	64
102  	#  endif
103  	# endif
104  	#elif defined __INT_MAX__
105  	# if __INT_MAX__ == 32767
106  	#  define WORD_BIT	16
107  	# else
108  	#  if __INT_MAX__ == 2147483647
109  	#   define WORD_BIT	32
110  	#  else
111  	/* Safe assumption.  */
112  	#   define WORD_BIT	64
113  	#  endif
114  	# endif
115  	#else
116  	# define WORD_BIT	32
117  	#endif
118  	
119  	/* Number of bits in a word of type `long int'.  */
120  	#ifdef LONG_MAX
121  	# if LONG_MAX == 2147483647
122  	#  define LONG_BIT	32
123  	# else
124  	/* Safe assumption.  */
125  	#  define LONG_BIT	64
126  	# endif
127  	#elif defined __LONG_MAX__
128  	# if __LONG_MAX__ == 2147483647
129  	#  define LONG_BIT	32
130  	# else
131  	/* Safe assumption.  */
132  	#  define LONG_BIT	64
133  	# endif
134  	#else
135  	# include <bits/wordsize.h>
136  	# if __WORDSIZE == 64
137  	#  define LONG_BIT	64
138  	# else
139  	#  define LONG_BIT	32
140  	# endif
141  	#endif
142  	
143  	#endif /* bits/xopen_lim.h */
144