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

     1  /* Copyright (C) 1991-2015 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   *	ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types	<limits.h>
    20   */
    21  
    22  #ifndef _LIBC_LIMITS_H_
    23  #define _LIBC_LIMITS_H_	1
    24  
    25  #include <features.h>
    26  
    27  /* Maximum length of any multibyte character in any locale.
    28     We define this value here since the gcc header does not define
    29     the correct value.  */
    30  #define MB_LEN_MAX	16
    31  
    32  /* If we are not using GNU CC we have to define all the symbols ourself.
    33     Otherwise use gcc's definitions (see below).  */
    34  #if !defined __GNUC__ || __GNUC__ < 2
    35  
    36  /* We only protect from multiple inclusion here, because all the other
    37     #include's protect themselves, and in GCC 2 we may #include_next through
    38     multiple copies of this file before we get to GCC's.  */
    39  # ifndef _LIMITS_H
    40  #  define _LIMITS_H	1
    41  
    42  #include <bits/wordsize.h>
    43  
    44  /* We don't have #include_next.
    45     Define ANSI <limits.h> for standard 32-bit words.  */
    46  
    47  /* These assume 8-bit `char's, 16-bit `short int's,
    48     and 32-bit `int's and `long int's.  */
    49  
    50  /* Number of bits in a `char'.	*/
    51  #  define CHAR_BIT	8
    52  
    53  /* Minimum and maximum values a `signed char' can hold.  */
    54  #  define SCHAR_MIN	(-128)
    55  #  define SCHAR_MAX	127
    56  
    57  /* Maximum value an `unsigned char' can hold.  (Minimum is 0.)  */
    58  #  define UCHAR_MAX	255
    59  
    60  /* Minimum and maximum values a `char' can hold.  */
    61  #  ifdef __CHAR_UNSIGNED__
    62  #   define CHAR_MIN	0
    63  #   define CHAR_MAX	UCHAR_MAX
    64  #  else
    65  #   define CHAR_MIN	SCHAR_MIN
    66  #   define CHAR_MAX	SCHAR_MAX
    67  #  endif
    68  
    69  /* Minimum and maximum values a `signed short int' can hold.  */
    70  #  define SHRT_MIN	(-32768)
    71  #  define SHRT_MAX	32767
    72  
    73  /* Maximum value an `unsigned short int' can hold.  (Minimum is 0.)  */
    74  #  define USHRT_MAX	65535
    75  
    76  /* Minimum and maximum values a `signed int' can hold.  */
    77  #  define INT_MIN	(-INT_MAX - 1)
    78  #  define INT_MAX	2147483647
    79  
    80  /* Maximum value an `unsigned int' can hold.  (Minimum is 0.)  */
    81  #  define UINT_MAX	4294967295U
    82  
    83  /* Minimum and maximum values a `signed long int' can hold.  */
    84  #  if __WORDSIZE == 64
    85  #   define LONG_MAX	9223372036854775807L
    86  #  else
    87  #   define LONG_MAX	2147483647L
    88  #  endif
    89  #  define LONG_MIN	(-LONG_MAX - 1L)
    90  
    91  /* Maximum value an `unsigned long int' can hold.  (Minimum is 0.)  */
    92  #  if __WORDSIZE == 64
    93  #   define ULONG_MAX	18446744073709551615UL
    94  #  else
    95  #   define ULONG_MAX	4294967295UL
    96  #  endif
    97  
    98  #  ifdef __USE_ISOC99
    99  
   100  /* Minimum and maximum values a `signed long long int' can hold.  */
   101  #   define LLONG_MAX	9223372036854775807LL
   102  #   define LLONG_MIN	(-LLONG_MAX - 1LL)
   103  
   104  /* Maximum value an `unsigned long long int' can hold.  (Minimum is 0.)  */
   105  #   define ULLONG_MAX	18446744073709551615ULL
   106  
   107  #  endif			/* ISO C99 */
   108  
   109  # endif				/* limits.h  */
   110  #endif				/* GCC 2.  */
   111  
   112  #endif				/* !_LIBC_LIMITS_H_ */
   113  
   114   /* Get the compiler's limits.h, which defines almost all the ISO constants.
   115  
   116      We put this #include_next outside the double inclusion check because
   117      it should be possible to include this file more than once and still get
   118      the definitions from gcc's header.  */
   119  #if defined __GNUC__ && !defined _GCC_LIMITS_H_
   120  /* `_GCC_LIMITS_H_' is what GCC's file defines.  */
   121  # include_next <limits.h>
   122  #endif
   123  
   124  /* The <limits.h> files in some gcc versions don't define LLONG_MIN,
   125     LLONG_MAX, and ULLONG_MAX.  Instead only the values gcc defined for
   126     ages are available.  */
   127  #if defined __USE_ISOC99 && defined __GNUC__
   128  # ifndef LLONG_MIN
   129  #  define LLONG_MIN	(-LLONG_MAX-1)
   130  # endif
   131  # ifndef LLONG_MAX
   132  #  define LLONG_MAX	__LONG_LONG_MAX__
   133  # endif
   134  # ifndef ULLONG_MAX
   135  #  define ULLONG_MAX	(LLONG_MAX * 2ULL + 1)
   136  # endif
   137  #endif
   138  
   139  #ifdef	__USE_POSIX
   140  /* POSIX adds things to <limits.h>.  */
   141  # include <bits/posix1_lim.h>
   142  #endif
   143  
   144  #ifdef	__USE_POSIX2
   145  # include <bits/posix2_lim.h>
   146  #endif
   147  
   148  #ifdef	__USE_XOPEN
   149  # include <bits/xopen_lim.h>
   150  #endif