wctype(3S)							    wctype(3S)

NAME    [Toc]    [Back]

     wctype: iswalpha, iswupper, iswlower, iswdigit, iswxdigit,	iswalnum,
     iswspace, iswpunct, iswprint, iswgraph, iswcntrl, iswascii, isphonogram,
     isideogram, isenglish, isnumber, isspecial	- classify ASCII and
     supplementary code	set characters

SYNOPSIS    [Toc]    [Back]

     #include <ctype.h>
     #include <widec.h>
     #include <wctype.h>

     int iswalpha(wchar_t c<b>);
     ...

DESCRIPTION    [Toc]    [Back]

     These functions classify character-coded wchar_t values by	table lookup.
     Each is a predicate returning nonzero for true, zero for false.  The
     lookup table is generated by wchrtbl(1M).	Each of	these functions
     operates on both ASCII and	supplementary code sets	unless otherwise
     indicated.

     iswalpha(c<b>)       c is an English letter.

     iswupper(c<b>)       c is an English uppercase letter.

     iswlower(c<b>)       c is an English lowercase letter.

     iswdigit(c<b>)       c is a digit [0-9].

     iswxdigit(c<b>)      c is a hexadecimal digit	[0-9], [A-F], or [a-f].

     iswalnum(c<b>)       c is an alphanumeric (letter or digit).

     iswspace(c<b>)       c is a space character or a tab,	carriage return,
		       newline,	vertical tab, or form-feed.

     iswpunct(c<b>)       c is a punctuation character (neither control nor
		       alphanumeric).

     iswprint(c<b>)       c is a printing character including space.

     iswgraph(c<b>)       c is a printing character; like iswprint	except false
		       for space.

     iswcntrl(c<b>)       c is a delete character (0177), an ordinary control
		       character (less than 040), or other control character
		       of a supplementary code set.

     iswascii(c<b>)       c is an ASCII character code less than 0200.






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wctype(3S)							    wctype(3S)



     isphonogram(c<b>)    c is a phonogram	in a supplementary code	set.

     isideogram(c<b>)     c is an ideogram	in a supplementary code	set.

     isenglish(c<b>)      c is an English letters in a supplementary code set.

     isnumber(c<b>)       c is a digit of a supplementary code set.

     isspecial(c<b>)      c is a special character	in a supplementary code	set.

SEE ALSO    [Toc]    [Back]

     wchrtbl(1M), ctype(3C), wconv(3S).


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