modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/i386-linux-gnu/bits/xopen_lim.h (about)

     1  /* Copyright (C) 1996-2018 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  /* We do not provide fixed values for
    33  
    34     ARG_MAX	Maximum length of argument to the `exec' function
    35  		including environment data.
    36  
    37     ATEXIT_MAX	Maximum number of functions that may be registered
    38  		with `atexit'.
    39  
    40     CHILD_MAX	Maximum number of simultaneous processes per real
    41  		user ID.
    42  
    43     OPEN_MAX	Maximum number of files that one process can have open
    44  		at anyone time.
    45  
    46     PAGESIZE
    47     PAGE_SIZE	Size of bytes of a page.
    48  
    49     PASS_MAX	Maximum number of significant bytes in a password.
    50  
    51     We only provide a fixed limit for
    52  
    53     IOV_MAX	Maximum number of `iovec' structures that one process has
    54  		available for use with `readv' or writev'.
    55  
    56     if this is indeed fixed by the underlying system.
    57  */
    58  
    59  /* Maximum number of `iovec' structures that may be used in a single call
    60     to `readv', `writev', etc.  */
    61  #define	_XOPEN_IOV_MAX	_POSIX_UIO_MAXIOV
    62  
    63  #include <bits/uio_lim.h>
    64  #ifdef __IOV_MAX
    65  # define IOV_MAX __IOV_MAX
    66  #else
    67  # undef IOV_MAX
    68  #endif
    69  
    70  /* Maximum value of `digit' in calls to the `printf' and `scanf'
    71     functions.  We have no limit, so return a reasonable value.  */
    72  #define NL_ARGMAX	_POSIX_ARG_MAX
    73  
    74  /* Maximum number of bytes in a `LANG' name.  We have no limit.  */
    75  #define NL_LANGMAX	_POSIX2_LINE_MAX
    76  
    77  /* Maximum message number.  We have no limit.  */
    78  #define NL_MSGMAX	INT_MAX
    79  
    80  /* Maximum number of bytes in N-to-1 collation mapping.  We have no
    81     limit.  */
    82  #if defined __USE_GNU || !defined __USE_XOPEN2K8
    83  # define NL_NMAX	INT_MAX
    84  #endif
    85  
    86  /* Maximum set number.  We have no limit.  */
    87  #define NL_SETMAX	INT_MAX
    88  
    89  /* Maximum number of bytes in a message.  We have no limit.  */
    90  #define NL_TEXTMAX	INT_MAX
    91  
    92  /* Default process priority.  */
    93  #define NZERO		20
    94  
    95  /* Number of bits in a word of type `int'.  */
    96  #ifdef INT_MAX
    97  # if INT_MAX == 32767
    98  #  define WORD_BIT	16
    99  # else
   100  #  if INT_MAX == 2147483647
   101  #   define WORD_BIT	32
   102  #  else
   103  /* Safe assumption.  */
   104  #   define WORD_BIT	64
   105  #  endif
   106  # endif
   107  #elif defined __INT_MAX__
   108  # if __INT_MAX__ == 32767
   109  #  define WORD_BIT	16
   110  # else
   111  #  if __INT_MAX__ == 2147483647
   112  #   define WORD_BIT	32
   113  #  else
   114  /* Safe assumption.  */
   115  #   define WORD_BIT	64
   116  #  endif
   117  # endif
   118  #else
   119  # define WORD_BIT	32
   120  #endif
   121  
   122  /* Number of bits in a word of type `long int'.  */
   123  #ifdef LONG_MAX
   124  # if LONG_MAX == 2147483647
   125  #  define LONG_BIT	32
   126  # else
   127  /* Safe assumption.  */
   128  #  define LONG_BIT	64
   129  # endif
   130  #elif defined __LONG_MAX__
   131  # if __LONG_MAX__ == 2147483647
   132  #  define LONG_BIT	32
   133  # else
   134  /* Safe assumption.  */
   135  #  define LONG_BIT	64
   136  # endif
   137  #else
   138  # include <bits/wordsize.h>
   139  # if __WORDSIZE == 64
   140  #  define LONG_BIT	64
   141  # else
   142  #  define LONG_BIT	32
   143  # endif
   144  #endif
   145  
   146  #endif				/* bits/xopen_lim.h */