WCTYPE(3) Linux Programmer's Manual WCTYPE(3)

NAME
       wctype - wide-character classification

SYNOPSIS
       #include 

       wctypet wctype(const char *name);

DESCRIPTION
       The  wctypet  type represents a property which a wide character may or
       may not have.  In other words, it represents a class  of  wide  charac‐
       ters.   This type's nature is implementation-dependent, but the special
       value (wctypet) 0 denotes an invalid property.  Nonzero wctypet  val‐
       ues  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 LCCTYPE 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 (wctypet) 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
       C99.

NOTES
       The behavior of wctype() depends on the LCCTYPE category of  the  cur‐
       rent locale.

SEE ALSO
       iswctype(3)

COLOPHON
       This  page  is  part of release 3.53 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.



GNU                               1999-07-25                         WCTYPE(3)