ctype.h Defines the ctype macros.

ctype.h Defines the ctype macros.

Copyright (c) Borland International 1987,1988
All Rights Reserved.
*/
#if __STDC__
#define _Cdecl
#else
#define _Cdecl cdecl
#endif

#define _IS_SP 1 /* is space */
#define _IS_DIG 2 /* is digit indicator */
#define _IS_UPP 4 /* is upper case */
#define _IS_LOW 8 /* is lower case */
#define _IS_HEX 16 /* [A-F or [a-f] */
#define _IS_CTL 32 /* Control */
#define _IS_PUN 64 /* punctuation */

extern char _Cdecl _ctype[]; /* Character type array */

#define isalnum(c) (_ctype[(c) + 1] & (_IS_DIG | _IS_UPP | _IS_LOW))
#define isalpha(c) (_ctype[(c) + 1] & (_IS_UPP | _IS_LOW))
#define isascii(c) ((unsigned)(c) < 128)
#define iscntrl(c) (_ctype[(c) + 1] & _IS_CTL)
#define isdigit(c) (_ctype[(c) + 1] & _IS_DIG)
#define isgraph(c) ((c) >= 0x21 && (c) <= 0x7e)
#define islower(c) (_ctype[(c) + 1] & _IS_LOW)
#define isprint(c) ((c) >= 0x20 && (c) <= 0x7e)
#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_DIG | _IS_HEX))

#define _toupper(c) ((c) + 'A' - 'a')
#define _tolower(c) ((c) + 'a' - 'A')
#define toascii(c) ((c) & 0x7f)

int _Cdecl tolower(int ch);
int _Cdecl toupper(int ch);


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