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   iswdigit    ( 3 )

тест на наличие широкого символа десятичной цифры (test for decimal digit wide character)

Имя (Name)

iswdigit - test for decimal digit wide character

Синопсис (Synopsis)

#include <wctype.h>

int iswdigit(wint_t wc);


Описание (Description)

The iswdigit() function is the wide-character equivalent of the
       isdigit(3) function.  It tests whether wc is a wide character
       belonging to the wide-character class "digit".

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

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

The wide-character class "digit" is disjoint from the wide- character class "alpha" and therefore also disjoint from its subclasses "lower", "upper".

The wide-character class "digit" always contains exactly the digits '0' to '9'.


Возвращаемое значение (Return value)

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

Атрибуты (Attributes)

For an explanation of the terms used in this section, see
       attributes(7).

┌───────────────────────────────┬───────────────┬────────────────┐ │Interface Attribute Value │ ├───────────────────────────────┼───────────────┼────────────────┤ │iswdigit() │ Thread safety │ MT-Safe locale │ └───────────────────────────────┴───────────────┴────────────────┘


Стандарты (Conforming to)

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

Примечание (Note)

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

Смотри также (See also)

isdigit(3), iswctype(3)