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Annotation of kernel/bsd/include/c.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            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_ */

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