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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 char‐
     acter classification utilities

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <wctype.h>

     int
     iswalnum(wint_t wc);

     int
     iswalpha(wint_t wc);

     int
     iswascii(wint_t wc);

     int
     iswblank(wint_t wc);

     int
     iswcntrl(wint_t wc);

     int
     iswdigit(wint_t wc);

     int
     iswgraph(wint_t wc);

     int
     iswhexnumber(wint_t wc);

     int
     iswideogram(wint_t wc);

     int
     iswlower(wint_t wc);

     int
     iswnumber(wint_t wc);

     int
     iswphonogram(wint_t wc);

     int
     iswprint(wint_t wc);

     int
     iswpunct(wint_t wc);

     int
     iswrune(wint_t wc);

     int
     iswspace(wint_t wc);

     int
     iswspecial(wint_t wc);

     int
     iswupper(wint_t wc);

     int
     iswxdigit(wint_t wc);

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

     Extended locale versions of these functions are documented in
     iswalnum_l(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), iswalnum_l(3), isxdigit(3), wctype(3)

STANDARDS
     These functions conform to IEEE 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 wchar_t value for the current locale.

BSD				October 3, 2002				   BSD
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