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)
