include/c.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  * Standard C macros
  27  *
  28  **********************************************************************
  29  * HISTORY
  30  * 02-Feb-86  Glenn Marcy (gm0w) at Carnegie-Mellon University
  31  *      Added check to allow multiple or recursive inclusion of this
  32  *      file.  Added bool enum from machine/types.h for regular users
  33  *      that want a real boolean type.
  34  *
  35  * 29-Dec-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
  36  *      Also change spacing of MAX and MIN to coincide with that of
  37  *      sys/param.h.
  38  *
  39  * 19-Nov-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
  40  *      Changed the number of tabs between TRUE, FALSE and their
  41  *      respective values to match those in sys/types.h.
  42  *
  43  * 17-Dec-84  Glenn Marcy (gm0w) at Carnegie-Mellon University
  44  *      Only define TRUE and FALSE if not defined.  Added caseE macro
  45  *      for using enumerated types in switch statements.
  46  *
  47  * 23-Apr-81  Mike Accetta (mja) at Carnegie-Mellon University
  48  *      Added "sizeofS" and "sizeofA" macros which expand to the size
  49  *      of a string constant and array respectively.
  50  *
  51  **********************************************************************
  52  */
  53
  54 #ifndef _C_INCLUDE_
  55 #define _C_INCLUDE_
  56
  57 #ifndef ABS
  58 #define ABS(x) ((x)>=0?(x):-(x))
  59 #endif /* ABS */
  60 #ifndef MIN
  61 #define MIN(a,b) (((a)<(b))?(a):(b))
  62 #endif /* MIN */
  63 #ifndef MAX
  64 #define MAX(a,b) (((a)>(b))?(a):(b))
  65 #endif /* MAX */
  66
  67 #ifndef FALSE
  68 #define FALSE   0
  69 #endif  /* FALSE */
  70 #ifndef TRUE
  71 #define TRUE    1
  72 #endif  /* TRUE */
  73
  74 #define CERROR          (-1)
  75
  76 #ifndef bool
  77 typedef enum    { false = 0, true = 1 } bool;
  78 #endif  /* bool */
  79
  80 #define sizeofS(string) (sizeof(string) - 1)
  81 #define sizeofA(array)  (sizeof(array)/sizeof(array[0]))
  82
  83 #define caseE(enum_type)        case (int)(enum_type)
  84
  85 #endif  /* _C_INCLUDE_ */