GENWiki

Premier IT Outsourcing and Support Services within the UK

User Tools

Site Tools


man:iswdigit

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

NAME

     iswdigit - test for decimal digit wide character

SYNOPSIS

     #include <wctype.h>
     int iswdigit(wint_t wc);

DESCRIPTION

     The  iswdigit()  function  is  the  wide-character  equivalent  of  the
     isdigit(3) function.  It tests whether wc is a wide character belonging
     to the wide-character class "digit".
     The  wide-character  class  "digit" is a subclass of the wide-character
     class "xdigit", and therefore also a  subclass  of  the  wide-character
     class  "alnum",  of  the  wide-character class "graph" and of the wide-
     character class "print".
     Being a subclass of the wide character class "print", the  wide-charac-
     ter class "digit" is disjoint from the wide-character class "cntrl".
     Being  a subclass of the wide-character class "graph", the wide-charac-
     ter class "digit" is disjoint from the wide-character class "space" and
     its subclass "blank".
     Being  a subclass of the wide-character class "alnum", the wide-charac-
     ter class "digit" is disjoint from the wide-character class "punct".
     The wide-character class "digit" is disjoint  from  the  wide-character
     class  "alpha" and therefore also disjoint from its subclasses "lower",
     "upper".
     The wide-character class "digit" always contains exactly the digits '0'
     to '9'.

RETURN VALUE

     The  iswdigit()  function  returns  nonzero  if  wc is a wide character
     belonging to the wide-character class "digit".  Otherwise,  it  returns
     zero.

ATTRIBUTES

     For   an   explanation   of   the  terms  used  in  this  section,  see
     attributes(7).
     +-----------+---------------+----------------+
     |Interface  | Attribute     | Value          |
     +-----------+---------------+----------------+
     |iswdigit() | Thread safety | MT-Safe locale |
     +-----------+---------------+----------------+

CONFORMING TO

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

NOTES

     The behavior of iswdigit() depends on the LC_CTYPE category of the cur-
     rent locale.

SEE ALSO

     isdigit(3), iswctype(3)

COLOPHON

     This  page  is  part of release 4.16 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/.

GNU 2015-08-08 ISWDIGIT(3)

/data/webs/external/dokuwiki/data/pages/man/iswdigit.txt · Last modified: 2019/05/17 09:32 by 127.0.0.1

Was this page helpful?-10+1

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki