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() function. It tests whether wc is a wide character  belonging
16       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 non-zero if wc  is  a  wide  character
37       belonging  to  the  wide character class "xdigit". Otherwise it returns
38       zero.
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CONFORMING TO

41       C99.
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SEE ALSO

44       iswctype(3), isxdigit(3)
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NOTES

47       The behaviour of iswxdigit() depends on the LC_CTYPE  category  of  the
48       current locale.
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52GNU                               1999-07-25                      ISWXDIGIT(3)