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c.h
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1992-03-26
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/*
* 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
* Change7&Be 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_