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Annotation of XNU/bsd/include/c.h, revision 1.1.1.1

1.1       root        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_ */

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