modernc.org/cc@v1.0.1/v2/headers/linux_amd64/usr/include/bits/xopen_lim.h (about)

     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  /* Maximum number of `iovec' structures that one process has available
    63     for use with `readv' or writev'.  */
    64  #define	_XOPEN_IOV_MAX	_POSIX_UIO_MAXIOV
    65  
    66  /* Maximum value of `digit' in calls to the `printf' and `scanf'
    67     functions.  We have no limit, so return a reasonable value.  */
    68  #define NL_ARGMAX	_POSIX_ARG_MAX
    69  
    70  /* Maximum number of bytes in a `LANG' name.  We have no limit.  */
    71  #define NL_LANGMAX	_POSIX2_LINE_MAX
    72  
    73  /* Maximum message number.  We have no limit.  */
    74  #define NL_MSGMAX	INT_MAX
    75  
    76  /* Maximum number of bytes in N-to-1 collation mapping.  We have no
    77     limit.  */
    78  #define NL_NMAX		INT_MAX
    79  
    80  /* Maximum set number.  We have no limit.  */
    81  #define NL_SETMAX	INT_MAX
    82  
    83  /* Maximum number of bytes in a message.  We have no limit.  */
    84  #define NL_TEXTMAX	INT_MAX
    85  
    86  /* Default process priority.  */
    87  #define NZERO		20
    88  
    89  /* Number of bits in a word of type `int'.  */
    90  #ifdef INT_MAX
    91  # if INT_MAX == 32767
    92  #  define WORD_BIT	16
    93  # else
    94  #  if INT_MAX == 2147483647
    95  #   define WORD_BIT	32
    96  #  else
    97  /* Safe assumption.  */
    98  #   define WORD_BIT	64
    99  #  endif
   100  # endif
   101  #elif defined __INT_MAX__
   102  # if __INT_MAX__ == 32767
   103  #  define WORD_BIT	16
   104  # else
   105  #  if __INT_MAX__ == 2147483647
   106  #   define WORD_BIT	32
   107  #  else
   108  /* Safe assumption.  */
   109  #   define WORD_BIT	64
   110  #  endif
   111  # endif
   112  #else
   113  # define WORD_BIT	32
   114  #endif
   115  
   116  /* Number of bits in a word of type `long int'.  */
   117  #ifdef LONG_MAX
   118  # if LONG_MAX == 2147483647
   119  #  define LONG_BIT	32
   120  # else
   121  /* Safe assumption.  */
   122  #  define LONG_BIT	64
   123  # endif
   124  #elif defined __LONG_MAX__
   125  # if __LONG_MAX__ == 2147483647
   126  #  define LONG_BIT	32
   127  # else
   128  /* Safe assumption.  */
   129  #  define LONG_BIT	64
   130  # endif
   131  #else
   132  # include <bits/wordsize.h>
   133  # if __WORDSIZE == 64
   134  #  define LONG_BIT	64
   135  # else
   136  #  define LONG_BIT	32
   137  # endif
   138  #endif
   139  
   140  #endif				/* bits/xopen_lim.h */