win32/include/limits.h

   1 /*
   2  * limits.h
   3  *
   4  * Defines constants for the sizes of integral types.
   5  *
   6  * NOTE: GCC should supply a version of this header and it should be safe to
   7  *       use that version instead of this one (maybe safer).
   8  *
   9  * This file is part of the Mingw32 package.
  10  *
  11  * Contributors:
  12  *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
  13  *
  14  *  THIS SOFTWARE IS NOT COPYRIGHTED
  15  *
  16  *  This source code is offered for use in the public domain. You may
  17  *  use, modify or distribute it freely.
  18  *
  19  *  This code is distributed in the hope that it will be useful but
  20  *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  21  *  DISCLAIMED. This includes but is not limited to warranties of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  23  *
  24  * $Revision: 1.2 $
  25  * $Author: bellard $
  26  * $Date: 2005/04/17 13:14:29 $
  27  *
  28  */
  29
  30 #ifndef _LIMITS_H_
  31 #define _LIMITS_H_
  32
  33 /* All the headers include this file. */
  34 #include <_mingw.h>
  35
  36 /*
  37  * File system limits
  38  *
  39  * TODO: NAME_MAX and OPEN_MAX are file system limits or not? Are they the
  40  *       same as FILENAME_MAX and FOPEN_MAX from stdio.h?
  41  * NOTE: Apparently the actual size of PATH_MAX is 260, but a space is
  42  *       required for the NUL. TODO: Test?
  43  */
  44 #define PATH_MAX        (259)
  45
  46 /*
  47  * Characteristics of the char data type.
  48  *
  49  * TODO: Is MB_LEN_MAX correct?
  50  */
  51 #define CHAR_BIT        8
  52 #define MB_LEN_MAX      2
  53
  54 #define SCHAR_MIN       (-128)
  55 #define SCHAR_MAX       127
  56
  57 #define UCHAR_MAX       255
  58
  59 /* TODO: Is this safe? I think it might just be testing the preprocessor,
  60  *       not the compiler itself... */
  61 #if     ('\x80' < 0)
  62 #define CHAR_MIN        SCHAR_MIN
  63 #define CHAR_MAX        SCHAR_MAX
  64 #else
  65 #define CHAR_MIN        0
  66 #define CHAR_MAX        UCHAR_MAX
  67 #endif
  68
  69 /*
  70  * Maximum and minimum values for ints.
  71  */
  72 #define INT_MAX         2147483647
  73 #define INT_MIN         (-INT_MAX-1)
  74
  75 #define UINT_MAX        0xffffffff
  76
  77 /*
  78  * Maximum and minimum values for shorts.
  79  */
  80 #define SHRT_MAX        32767
  81 #define SHRT_MIN        (-SHRT_MAX-1)
  82
  83 #define USHRT_MAX       0xffff
  84
  85 /*
  86  * Maximum and minimum values for longs and unsigned longs.
  87  *
  88  * TODO: This is not correct for Alphas, which have 64 bit longs.
  89  */
  90 #define LONG_MAX        2147483647L
  91
  92 #define LONG_MIN        (-LONG_MAX-1)
  93
  94 #define ULONG_MAX       0xffffffffUL
  95
  96
  97 /*
  98  * The GNU C compiler also allows 'long long int'
  99  */
 100 #if     !defined(__STRICT_ANSI__) && defined(__GNUC__)
 101
 102 #define LONG_LONG_MAX   9223372036854775807LL
 103 #define LONG_LONG_MIN   (-LONG_LONG_MAX-1)
 104
 105 #define ULONG_LONG_MAX  (2ULL * LONG_LONG_MAX + 1)
 106
 107 /* ISO C9x macro names */
 108 #define LLONG_MAX LONG_LONG_MAX
 109 #define LLONG_MIN LONG_LONG_MIN
 110 #define ULLONG_MAX ULONG_LONG_MAX
 111
 112 #endif /* Not Strict ANSI and GNU C compiler */
 113
 114
 115 #endif /* not _LIMITS_H_ */