2.11BSD/src/ucb/tn3270/ectype.h

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/*	@(#)ectype.h	1.2	*/

extern char ectype[];		/* 256 byte array */

#define	E_UPPER	0x01
#define	E_LOWER	0x02
#define	E_DIGIT	0x04
#define	E_SPACE	0x08
#define	E_PUNCT	0x10
#define	E_PRINT 0x20

#define	Eisalpha(c)	(ectype[(c)&0xff]&(E_UPPER|E_LOWER))
#define	Eisupper(c)	(ectype[(c)&0xff]&E_UPPER)
#define	Eislower(c)	(ectype[(c)&0xff]&E_LOWER)
#define	Eisdigit(c)	(ectype[(c)&0xff]&E_DIGIT)
#define	Eisalnum(c)	(ectype[(c)&0xff]&(E_UPPER|E_LOWER|E_DIGIT))
#define	Eisspace(c)	(ectype[(c)&0xff]&E_SPACE)	/* blank or null */
#define	Eispunct(c)	(ectype[(c)&0xff]&E_PUNCT)
#define	Eisprint(c)	(ectype[(c)&0xff]&E_PRINT)