тест на широкий алфавитный символ (test for alphabetic wide character)
Имя (Name)
iswalpha - test for alphabetic wide character
Синопсис (Synopsis)
#include <wctype.h>
int iswalpha(wint_t wc);
Описание (Description)
The iswalpha() function is the wide-character equivalent of the
isalpha(3) function. It tests whether wc is a wide character
belonging to the wide-character class "alpha".
The wide-character class "alpha" 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 "alpha" is disjoint from the wide-character class
"cntrl".
Being a subclass of the wide-character class "graph", the wide-
character class "alpha" 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 "alpha" is disjoint from the wide-character class
"punct".
The wide-character class "alpha" is disjoint from the wide-
character class "digit".
The wide-character class "alpha" contains the wide-character
classes "upper" and "lower".
The wide-character class "alpha" always contains at least the
letters 'A' to 'Z' and 'a' to 'z'.
Возвращаемое значение (Return value)
The iswalpha() function returns nonzero if wc is a wide character
belonging to the wide-character class "alpha". Otherwise, it
returns zero.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│iswalpha() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, C99.
Примечание (Note)
The behavior of iswalpha() depends on the LC_CTYPE category of
the current locale.
Смотри также (See also)
isalpha(3), iswctype(3)
