Open Source Software

wctype(3)



NAME

   wctype - wide-character classification

SYNOPSIS

   #include <wctype.h>

   wctype_t wctype(const char *name);

DESCRIPTION

   The  wctype_t  type represents a property which a wide character may or
   may  not  have.   In  other  words,  it  represents  a  class  of  wide
   characters.   This  type's  nature is implementation-dependent, but the
   special value  (wctype_t)  0  denotes  an  invalid  property.   Nonzero
   wctype_t  values  can be passed to the iswctype(3) function to actually
   test whether a given wide character has the property.

   The wctype() function returns a property, given by its name.   The  set
   of  valid names depends on the LC_CTYPE category of the current locale,
   but the following names are valid in all locales.
     "alnum" - realizes the isalnum(3) classification function
     "alpha" - realizes the isalpha(3) classification function
     "blank" - realizes the isblank(3) classification function
     "cntrl" - realizes the iscntrl(3) classification function
     "digit" - realizes the isdigit(3) classification function
     "graph" - realizes the isgraph(3) classification function
     "lower" - realizes the islower(3) classification function
     "print" - realizes the isprint(3) classification function
     "punct" - realizes the ispunct(3) classification function
     "space" - realizes the isspace(3) classification function
     "upper" - realizes the isupper(3) classification function
     "xdigit" - realizes the isxdigit(3) classification function

RETURN VALUE

   The wctype() function returns a property  descriptor  if  the  name  is
   valid.  Otherwise, it returns (wctype_t) 0.

ATTRIBUTES

   For   an   explanation   of   the  terms  used  in  this  section,  see
   attributes(7).

   
   Interface  Attribute      Value          
   
   wctype()   Thread safety  MT-Safe locale

CONFORMING TO

   POSIX.1-2001, POSIX.1-2008, C99.

NOTES

   The behavior of wctype()  depends  on  the  LC_CTYPE  category  of  the
   current locale.

SEE ALSO

   iswctype(3)

COLOPHON

   This  page  is  part of release 4.09 of the Linux man-pages project.  A
   description of the project, information about reporting bugs,  and  the
   latest     version     of     this    page,    can    be    found    at
   https://www.kernel.org/doc/man-pages/.



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