ISWALNUM(3)              BSD Library Functions Manual              ISWALNUM(3)

NAME
     iswalnum, iswalpha, iswascii, iswblank, iswcntrl, iswdigit, iswgraph,
     iswhexnumber, iswideogram, iswlower, iswnumber, iswphonogram, iswprint,
     iswpunct, iswrune, iswspace, iswspecial, iswupper, iswxdigit -- wide
     character classification utilities

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##include <>

     int
     iswalnum(wintt wc);

     int
     iswalpha(wintt wc);

     int
     iswascii(wintt wc);

     int
     iswblank(wintt wc);

     int
     iswcntrl(wintt wc);

     int
     iswdigit(wintt wc);

     int
     iswgraph(wintt wc);

     int
     iswhexnumber(wintt wc);

     int
     iswideogram(wintt wc);

     int
     iswlower(wintt wc);

     int
     iswnumber(wintt wc);

     int
     iswphonogram(wintt wc);

     int
     iswprint(wintt wc);

     int
     iswpunct(wintt wc);

     int
     iswrune(wintt wc);

     int
     iswspace(wintt wc);

     int
     iswspecial(wintt wc);

     int
     iswupper(wintt wc);

     int
     iswxdigit(wintt wc);

DESCRIPTION
     The above functions are character classification utility functions, for
     use with wide characters (wchart or wintt).  See the description for
     the similarly-named single byte classification functions (like
     isalnum(3)), for details.

     Extended locale versions of these functions are documented in
     iswalnuml(3).  See xlocale(3) for more information.

RETURN VALUES
     The functions return zero if the character tests false and return non-
     zero if the character tests true.

SEE ALSO
     isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3),
     isgraph(3), ishexnumber(3), isideogram(3), islower(3), isnumber(3),
     isphonogram(3), isprint(3), ispunct(3), isrune(3), isspace(3),
     isspecial(3), isupper(3), isxdigit(3), wctype(3), iswalnuml(3)

STANDARDS
     These functions conform to IE Std 1003.1-2001 (``POSIX.1''), except
     iswascii(), iswhexnumber(), iswideogram(), iswnumber(), iswphonogram(),
     iswrune() and iswspecial(), which are FreeBSD extensions.

CAVEATS
     The result of these functions is undefined unless the argument is WEOF or
     a valid wchart value for the current locale.

BSD                             October 3, 2002                            BSD