iswxdigit(3) — Справочная страница Linux

iswxdigit(3)            Library Functions Manual            iswxdigit(3)

ИМЯ

       iswxdigit - test for hexadecimal digit wide character

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <wctype.h>

       int iswxdigit(wint_t wc);

ОПИСАНИЕ

       The iswxdigit() function is the wide-character equivalent of the
       isxdigit(3) function.  It tests whether wc is a wide character
       belonging to the wide-character class "xdigit".

       The wide-character class "xdigit" is a subclass of the wide-
       character class "alnum", and therefore also a subclass 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 "xdigit" is disjoint from the wide-character
       class "cntrl".

       Being a subclass of the wide-character class "graph", the wide-
       character class "xdigit" 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 "xdigit" is disjoint from the wide-character
       class "punct".

       The wide-character class "xdigit" always contains at least the
       letters 'A' to 'F', 'a' to 'f' and the digits '0' to '9'.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

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

АТРИБУТЫ

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

СТАНДАРТЫ

       C11, POSIX.1-2008.

ИСТОРИЯ

       POSIX.1-2001, C99.

ПРИМЕЧАНИЯ

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

СМОТРИТЕ ТАКЖЕ

       iswctype(3), isxdigit(3)

КОЛОФОН

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Linux man-pages 6.9.1          2024-05-02                   iswxdigit(3)

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