1ISWXDIGIT(3)               Linux Programmer's Manual              ISWXDIGIT(3)
2
3
4

NAME

6       iswxdigit - test for hexadecimal digit wide character
7

SYNOPSIS

9       #include <wctype.h>
10
11       int iswxdigit(wint_t wc);
12

DESCRIPTION

14       The  iswxdigit()  function  is  the  wide-character  equivalent  of the
15       isxdigit(3) function.  It tests whether wc is a wide character  belong‐
16       ing to the wide-character class "xdigit".
17
18       The  wide-character  class "xdigit" is a subclass of the wide-character
19       class "alnum", and therefore also  a  subclass  of  the  wide-character
20       class "graph" and of the wide-character class "print".
21
22       Being  a subclass of the wide-character class "print", the wide-charac‐
23       ter class "xdigit" is disjoint from the wide-character class "cntrl".
24
25       Being a subclass of the wide-character class "graph", the  wide-charac‐
26       ter  class  "xdigit"  is disjoint from the wide-character class "space"
27       and its subclass "blank".
28
29       Being a subclass of the wide-character class "alnum", the  wide-charac‐
30       ter class "xdigit" is disjoint from the wide-character class "punct".
31
32       The  wide-character class "xdigit" always contains at least the letters
33       'A' to 'F', 'a' to 'f' and the digits '0' to '9'.
34

RETURN VALUE

36       The iswxdigit() function returns nonzero if  wc  is  a  wide  character
37       belonging  to the wide-character class "xdigit".  Otherwise, it returns
38       zero.
39

ATTRIBUTES

41       For  an  explanation  of  the  terms  used   in   this   section,   see
42       attributes(7).
43
44       ┌────────────┬───────────────┬────────────────┐
45       │Interface   │ Attribute     │ Value          │
46       ├────────────┼───────────────┼────────────────┤
47       │iswxdigit() │ Thread safety │ MT-Safe locale │
48       └────────────┴───────────────┴────────────────┘

CONFORMING TO

50       POSIX.1-2001, POSIX.1-2008, C99.
51

NOTES

53       The  behavior  of  iswxdigit()  depends on the LC_CTYPE category of the
54       current locale.
55

SEE ALSO

57       iswctype(3), isxdigit(3)
58

COLOPHON

60       This page is part of release 4.16 of the Linux  man-pages  project.   A
61       description  of  the project, information about reporting bugs, and the
62       latest    version    of    this    page,    can     be     found     at
63       https://www.kernel.org/doc/man-pages/.
64
65
66
67GNU                               2015-08-08                      ISWXDIGIT(3)
Impressum