Libc-262.tar.gz

[apple/libc.git] / include / c.h

diff --git a/include/c.h b/include/c.h
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+/*
+ * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ * 
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ * Standard C macros
+ *
+ **********************************************************************
+ * HISTORY
+ * 02-Feb-86  Glenn Marcy (gm0w) at Carnegie-Mellon University
+ *     Added check to allow multiple or recursive inclusion of this
+ *     file.  Added bool enum from machine/types.h for regular users
+ *     that want a real boolean type.
+ *
+ * 29-Dec-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
+ *     Also change spacing of MAX and MIN to coincide with that of
+ *     sys/param.h.
+ *
+ * 19-Nov-85  Glenn Marcy (gm0w) at Carnegie-Mellon University
+ *     Changed the number of tabs between TRUE, FALSE and their
+ *     respective values to match those in sys/types.h.
+ *
+ * 17-Dec-84  Glenn Marcy (gm0w) at Carnegie-Mellon University
+ *     Only define TRUE and FALSE if not defined.  Added caseE macro
+ *     for using enumerated types in switch statements.
+ *
+ * 23-Apr-81  Mike Accetta (mja) at Carnegie-Mellon University
+ *     Added "sizeofS" and "sizeofA" macros which expand to the size
+ *     of a string constant and array respectively.
+ *
+ **********************************************************************
+ */
+
+#ifndef        _C_INCLUDE_
+#define        _C_INCLUDE_
+
+#ifndef ABS
+#define ABS(x) ((x)>=0?(x):-(x))
+#endif /* ABS */
+#ifndef MIN
+#define        MIN(a,b) (((a)<(b))?(a):(b))
+#endif /* MIN */
+#ifndef MAX
+#define        MAX(a,b) (((a)>(b))?(a):(b))
+#endif /* MAX */
+
+#ifndef        FALSE
+#define FALSE  0
+#endif /* FALSE */
+#ifndef        TRUE
+#define TRUE   1
+#endif /* TRUE */
+
+#define        CERROR          (-1)
+
+#ifndef        bool
+typedef enum   { false = 0, true = 1 } bool;
+#endif /* bool */
+
+#define        sizeofS(string) (sizeof(string) - 1)
+#define sizeofA(array) (sizeof(array)/sizeof(array[0]))
+
+#define caseE(enum_type)       case (int)(enum_type)
+
+#endif /* _C_INCLUDE_ */