iswxdigit(3)

1iswxdigit(3)               Library Functions Manual               iswxdigit(3)
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NAME

6       iswxdigit - test for hexadecimal digit wide character
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LIBRARY

9       Standard C library (libc, -lc)
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SYNOPSIS

12       #include <wctype.h>
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14       int iswxdigit(wint_t wc);
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DESCRIPTION

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

39       The iswxdigit() function returns nonzero if wc is a wide character  be‐
40       longing  to  the  wide-character class "xdigit".  Otherwise, it returns
41       zero.
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ATTRIBUTES

44       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
45       tributes(7).
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47       ┌─────────────────────────────────────┬───────────────┬────────────────┐
48       │Interface                            │ Attribute     │ Value          │
49       ├─────────────────────────────────────┼───────────────┼────────────────┤
50       │iswxdigit()                          │ Thread safety │ MT-Safe locale │
51       └─────────────────────────────────────┴───────────────┴────────────────┘
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STANDARDS

54       C11, POSIX.1-2008.
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HISTORY

57       POSIX.1-2001, C99.
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NOTES

60       The  behavior  of  iswxdigit()  depends on the LC_CTYPE category of the
61       current locale.
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