классификация широких символов (wide-character classification)
Имя (Name)
wctype - wide-character classification
Синопсис (Synopsis)
#include <wctype.h>
wctype_t wctype(const char *name);
Описание (Description)
The wctype_t type represents a property which a wide character
may or may not have. In other words, it represents a class of
wide characters. This type's nature is implementation-dependent,
but the special value (wctype_t) 0 denotes an invalid property.
Nonzero wctype_t values can be passed to the iswctype(3) function
to actually test whether a given wide character has the property.
The wctype() function returns a property, given by its name. The
set of valid names depends on the LC_CTYPE category of the
current locale, but the following names are valid in all locales.
"alnum" - realizes the isalnum(3) classification function
"alpha" - realizes the isalpha(3) classification function
"blank" - realizes the isblank(3) classification function
"cntrl" - realizes the iscntrl(3) classification function
"digit" - realizes the isdigit(3) classification function
"graph" - realizes the isgraph(3) classification function
"lower" - realizes the islower(3) classification function
"print" - realizes the isprint(3) classification function
"punct" - realizes the ispunct(3) classification function
"space" - realizes the isspace(3) classification function
"upper" - realizes the isupper(3) classification function
"xdigit" - realizes the isxdigit(3) classification function
Возвращаемое значение (Return value)
The wctype() function returns a property descriptor if the name
is valid. Otherwise, it returns (wctype_t) 0.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│wctype() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, C99.
Примечание (Note)
The behavior of wctype() depends on the LC_CTYPE category of the
current locale.
Смотри также (See also)
iswctype(3)
