Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
ISWALNUM(3)		    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	<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	 (like
       isalnum(3)), for	details.

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)

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.

FreeBSD	13.0			October	3, 2002			   ISWALNUM(3)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=iswalpha&sektion=3&manpath=FreeBSD+13.0-RELEASE+and+Ports>

home | help