EXTERNAL_HEADERS/bsd/i386/limits.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1988, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  *
  57  *      @(#)limits.h    8.3 (Berkeley) 1/4/94
  58  */
  59 /*
  60  * HISTORY
  61  *
  62  *      10-July-97  Umesh Vaishampayan  (umeshv@apple.com)
  63  *              Avoid multiple includes.
  64  */
  65
  66 #ifndef _I386_LIMITS_H_
  67 #define _I386_LIMITS_H_
  68
  69 #define CHAR_BIT        8               /* number of bits in a char */
  70 #define MB_LEN_MAX      6               /* Allow 31 bit UTF2 */
  71
  72
  73 #define CLK_TCK         100             /* ticks per second */
  74
  75 /*
  76  * According to ANSI (section 2.2.4.2), the values below must be usable by
  77  * #if preprocessing directives.  Additionally, the expression must have the
  78  * same type as would an expression that is an object of the corresponding
  79  * type converted according to the integral promotions.  The subtraction for
  80  * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an
  81  * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
  82  * These numbers work for pcc as well.  The UINT_MAX and ULONG_MAX values
  83  * are written as hex so that GCC will be quiet about large integer constants.
  84  */
  85 #define SCHAR_MAX       127             /* min value for a signed char */
  86 #define SCHAR_MIN       (-128)          /* max value for a signed char */
  87
  88 #define UCHAR_MAX       255             /* max value for an unsigned char */
  89 #define CHAR_MAX        127             /* max value for a char */
  90 #define CHAR_MIN        (-128)          /* min value for a char */
  91
  92 #define USHRT_MAX       65535           /* max value for an unsigned short */
  93 #define SHRT_MAX        32767           /* max value for a short */
  94 #define SHRT_MIN        (-32768)        /* min value for a short */
  95
  96 #define UINT_MAX        0xffffffff      /* max value for an unsigned int */
  97 #define INT_MAX         2147483647      /* max value for an int */
  98 #define INT_MIN         (-2147483647-1) /* min value for an int */
  99
 100 #define ULONG_MAX       0xffffffff      /* max value for an unsigned long */
 101 #define LONG_MAX        2147483647      /* max value for a long */
 102 #define LONG_MIN        (-2147483647-1) /* min value for a long */
 103
 104 #if !defined(_ANSI_SOURCE)
 105 #define SSIZE_MAX       INT_MAX         /* max value for a ssize_t */
 106
 107 #if !defined(_POSIX_SOURCE)
 108 #define SIZE_T_MAX      UINT_MAX        /* max value for a size_t */
 109
 110 /* GCC requires that quad constants be written as expressions. */
 111 #define UQUAD_MAX       ((u_quad_t)0-1) /* max value for a uquad_t */
 112                                         /* max value for a quad_t */
 113 #define QUAD_MAX        ((quad_t)(UQUAD_MAX >> 1))
 114 #define QUAD_MIN        (-QUAD_MAX-1)   /* min value for a quad_t */
 115
 116 #endif /* !_POSIX_SOURCE */
 117 #endif /* !_ANSI_SOURCE */
 118
 119 #endif /* _I386_LIMITS_H_ */