1ISWXDIGIT(3)               Linux Programmer's Manual              ISWXDIGIT(3)
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NAME

6       iswxdigit - test for hexadecimal digit wide character
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SYNOPSIS

9       #include <wctype.h>
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11       int iswxdigit(wint_t wc);
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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".
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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".
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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".
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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".
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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".
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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'.
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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.
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ATTRIBUTES

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

CONFORMING TO

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

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

57       iswctype(3), isxdigit(3)
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COLOPHON

60       This page is part of release 4.15 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/.
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67GNU                               2015-08-08                      ISWXDIGIT(3)
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