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   iswalpha    ( 3 )

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)