iswdigit(3) [redhat man page]

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 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 character class "digit" is disjoint from the wide character class "cntrl".

       Being  a  subclass  of the wide character class "graph", the wide character 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 character 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 non-zero if wc is a wide character belonging to the wide character class "digit". Otherwise it returns zero.

CONFORMING TO

       ISO/ANSI C, UNIX98

SEE ALSO

       isdigit(3), iswctype(3)

NOTES

       The behaviour of iswdigit depends on the LC_CTYPE category of the current locale.

GNU
								    1999-07-25							       ISWDIGIT(3)

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-character class "digit" is disjoint from the wide-character class "cntrl".

       Being  a  subclass  of the wide-character class "graph", the wide-character 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-character 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 current locale.

SEE ALSO

       isdigit(3), iswctype(3)

COLOPHON

       This page is part of release 4.15 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)