bsd/include/c.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Standard C macros
  24  *
  25  **********************************************************************
  26  * HISTORY
  27  * 02-Feb-86  Glenn Marcy (gm0w) at Carnegie-Mellon University
  28  *      Added check to allow multiple or recursive inclusion of this
  29  *      file.  Added bool enum from machine/types.h for regular users
  30  *      that want a real boolean type.
  31  *
  32  * 29-Dec-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
  33  *      Also change spacing of MAX and MIN to coincide with that of
  34  *      sys/param.h.
  35  *
  36  * 19-Nov-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
  37  *      Changed the number of tabs between TRUE, FALSE and their
  38  *      respective values to match those in sys/types.h.
  39  *
  40  * 17-Dec-84  Glenn Marcy (gm0w) at Carnegie-Mellon University
  41  *      Only define TRUE and FALSE if not defined.  Added caseE macro
  42  *      for using enumerated types in switch statements.
  43  *
  44  * 23-Apr-81  Mike Accetta (mja) at Carnegie-Mellon University
  45  *      Added "sizeofS" and "sizeofA" macros which expand to the size
  46  *      of a string constant and array respectively.
  47  *
  48  **********************************************************************
  49  */
  50
  51 #ifndef _C_INCLUDE_
  52 #define _C_INCLUDE_
  53
  54 #ifndef ABS
  55 #define ABS(x) ((x)>=0?(x):-(x))
  56 #endif /* ABS */
  57 #ifndef MIN
  58 #define MIN(a,b) (((a)<(b))?(a):(b))
  59 #endif /* MIN */
  60 #ifndef MAX
  61 #define MAX(a,b) (((a)>(b))?(a):(b))
  62 #endif /* MAX */
  63
  64 #ifndef FALSE
  65 #define FALSE   0
  66 #endif  /* FALSE */
  67 #ifndef TRUE
  68 #define TRUE    1
  69 #endif  /* TRUE */
  70
  71 #define CERROR          (-1)
  72
  73 #ifndef bool
  74 typedef enum    { false = 0, true = 1 } bool;
  75 #endif  /* bool */
  76
  77 #define sizeofS(string) (sizeof(string) - 1)
  78 #define sizeofA(array)  (sizeof(array)/sizeof(array[0]))
  79
  80 #define caseE(enum_type)        case (int)(enum_type)
  81
  82 #endif  /* _C_INCLUDE_ */