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CTYPE.H
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C/C++ Source or Header
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1997-01-20
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2KB
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65 lines
#ifndef __CTYPE_H__
#define __CTYPE_H__
#include <stddef.h>
extern byte toupper(byte);
extern byte tolower(byte);
extern byte _ctype[ 257 ];
int isalnum (int __c);
int isalpha (int __c);
int iscntrl (int __c);
int isdigit (int __c);
int isgraph (int __c);
int islower (int __c);
int isprint (int __c);
int ispunct (int __c);
int isspace (int __c);
int isupper (int __c);
int isxdigit(int __c);
int isascii (int __c);
#define _IS_SP 1 /* space */
#define _IS_DIG 2 /* digit */
#define _IS_UPP 4 /* upper case */
#define _IS_LOW 8 /* lower case */
#define _IS_HEX 16 /* [0..9] or [A-F] or [a-f] */
#define _IS_CTL 32 /* control */
#define _IS_PUN 64 /* punctuation */
#define _IS_BLK 128 /* blank */
#define _IS_ALPHA (_IS_UPP | _IS_LOW)
#define _IS_ALNUM (_IS_DIG | _IS_ALPHA)
#define _IS_GRAPH (_IS_ALNUM | _IS_HEX | _IS_PUN)
#define isalnum(c) (_ctype[ (c)+1 ] & (_IS_ALNUM))
#define isalpha(c) (_ctype[ (c)+1 ] & (_IS_ALPHA))
#define iscntrl(c) (_ctype[ (c)+1 ] & (_IS_CTL))
#define isdigit(c) (_ctype[ (c)+1 ] & (_IS_DIG))
#define isgraph(c) (_ctype[ (c)+1 ] & (_IS_GRAPH))
#define islower(c) (_ctype[ (c)+1 ] & (_IS_LOW))
#define isprint(c) (_ctype[ (c)+1 ] & (_IS_GRAPH | _IS_BLK))
#define ispunct(c) (_ctype[ (c)+1 ] & (_IS_PUN))
#define isspace(c) (_ctype[ (c)+1 ] & (_IS_SP))
#define isupper(c) (_ctype[ (c)+1 ] & (_IS_UPP))
#define isxdigit(c) (_ctype[ (c)+1 ] & (_IS_HEX))
#define isascii(c) ((unsigned)(c) < 128)
#define toascii(c) ((c) & 0x7f)
#endif