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iswalnum(3)             Library Functions Manual             iswalnum(3)

ИМЯ

       iswalnum - test for alphanumeric wide character

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <wctype.h>

       int iswalnum(wint_t wc);

ОПИСАНИЕ

       The iswalnum() function is the wide-character equivalent of the
       isalnum(3) function.  It tests whether wc is a wide character
       belonging to the wide-character class "alnum".

       The wide-character class "alnum" is a subclass of the wide-
       character class "graph", and therefore also a subclass of the
       wide-character class "print".

       Being a subclass of the wide-character class "print", the wide-
       character class "alnum" is disjoint from the wide-character class
       "cntrl".

       Being a subclass of the wide-character class "graph", the wide-
       character class "alnum" is disjoint from the wide-character class
       "space" and its subclass "blank".

       The wide-character class "alnum" is disjoint from the wide-
       character class "punct".

       The wide-character class "alnum" is the union of the wide-
       character classes "alpha" and "digit".  As such, it also contains
       the wide-character class "xdigit".

       The wide-character class "alnum" always contains at least the
       letters 'A' to 'Z', 'a' to 'z', and the digits '0' to '9'.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

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

АТРИБУТЫ

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

СТАНДАРТЫ

       C11, POSIX.1-2008.

ИСТОРИЯ

       POSIX.1-2001, C99.

ПРИМЕЧАНИЯ

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

СМОТРИТЕ ТАКЖЕ

       isalnum(3), iswctype(3)

КОЛОФОН

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

Страницы, которые ссылаются на эту страницу: isalpha(3), iswctype(3)