sys/cpu/i386/include/limits.h

   1 /*
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)limits.h    8.3 (Berkeley) 1/4/94
  34  * $FreeBSD: src/sys/i386/include/limits.h,v 1.14.2.2 2000/11/05 09:21:42 obrien Exp $
  35  * $DragonFly: src/sys/cpu/i386/include/limits.h,v 1.5 2008/01/02 23:06:44 swildner Exp $
  36  */
  37
  38 #ifndef _CPU_LIMITS_H_
  39 #define _CPU_LIMITS_H_
  40
  41 #define CHAR_BIT        8               /* number of bits in a char */
  42 #define MB_LEN_MAX      6               /* Allow 31 bit UTF2 */
  43
  44 /*
  45  * According to ANSI (section 2.2.4.2), the values below must be usable by
  46  * #if preprocessing directives.  Additionally, the expression must have the
  47  * same type as would an expression that is an object of the corresponding
  48  * type converted according to the integral promotions.  The subtraction for
  49  * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
  50  * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
  51  * These numbers are for the default configuration of gcc.  They work for
  52  * some other compilers as well, but this should not be depended on.
  53  */
  54 #define SCHAR_MAX       0x7f            /* max value for a signed char */
  55 #define SCHAR_MIN       (-0x7f - 1)     /* min value for a signed char */
  56
  57 #define UCHAR_MAX       0xff            /* max value for an unsigned char */
  58
  59 #ifdef __CHAR_UNSIGNED__
  60 #define CHAR_MAX        UCHAR_MAX       /* max value for a char */
  61 #define CHAR_MIN        0               /* min value for a char */
  62 #else
  63 #define CHAR_MAX        SCHAR_MAX       /* max value for a char */
  64 #define CHAR_MIN        SCHAR_MIN       /* min value for a char */
  65 #endif
  66
  67 #define USHRT_MAX       0xffff          /* max value for an unsigned short */
  68 #define SHRT_MAX        0x7fff          /* max value for a short */
  69 #define SHRT_MIN        (-0x7fff - 1)   /* min value for a short */
  70
  71 #define UINT_MAX        0xffffffffU     /* max value for an unsigned int */
  72 #define INT_MAX         0x7fffffff      /* max value for an int */
  73 #define INT_MIN         (-0x7fffffff - 1)       /* min value for an int */
  74
  75 /* Bad hack for gcc configured to give 64-bit longs. */
  76 #ifdef _LARGE_LONG
  77 #define ULONG_MAX       0xffffffffffffffffUL
  78 #define LONG_MAX        0x7fffffffffffffffL
  79 #define LONG_MIN        (-0x7fffffffffffffffL - 1)
  80 #else
  81 #define ULONG_MAX       0xffffffffUL    /* max value for an unsigned long */
  82 #define LONG_MAX        0x7fffffffL     /* max value for a long */
  83 #define LONG_MIN        (-0x7fffffffL - 1)      /* min value for a long */
  84 #endif
  85
  86                         /* max value for an unsigned long long */
  87 #define ULLONG_MAX      0xffffffffffffffffULL
  88 #define LLONG_MAX       0x7fffffffffffffffLL    /* max value for a long long */
  89 #define LLONG_MIN       (-0x7fffffffffffffffLL - 1)  /* min for a long long */
  90
  91 #if !defined(_ANSI_SOURCE)
  92 #define SSIZE_MAX       INT_MAX         /* max value for a ssize_t */
  93
  94 #if !defined(_POSIX_SOURCE)
  95 #define SIZE_T_MAX      UINT_MAX        /* max value for a size_t */
  96
  97 #define GID_MAX         UINT_MAX        /* max value for a gid_t */
  98 #define UID_MAX         UINT_MAX        /* max value for a uid_t */
  99
 100 /* Quads and long longs are the same size.  Ensure they stay in sync. */
 101 #define UQUAD_MAX       ULLONG_MAX      /* max value for a uquad_t */
 102 #define QUAD_MAX        LLONG_MAX       /* max value for a quad_t */
 103 #define QUAD_MIN        LLONG_MIN       /* min value for a quad_t */
 104
 105 #ifdef _LARGE_LONG
 106 #define LONG_BIT        64
 107 #else
 108 #define LONG_BIT        32
 109 #endif
 110 #define WORD_BIT        32
 111
 112 #endif /* !_POSIX_SOURCE */
 113 #endif /* !_ANSI_SOURCE */
 114
 115 #endif /* !_CPU_LIMITS_H_ */