тест на широкий символ нижнего регистра (test for lowercase wide character)
Имя (Name)
iswlower - test for lowercase wide character
Синопсис (Synopsis)
#include <wctype.h>
int iswlower(wint_t wc);
Описание (Description)
The iswlower() function is the wide-character equivalent of the
islower(3) function. It tests whether wc is a wide character
belonging to the wide-character class "lower".
The wide-character class "lower" is a subclass of the wide-
character class "alpha", 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 "lower" is disjoint from the wide-character class
"cntrl".
Being a subclass of the wide-character class "graph", the wide-
character class "lower" 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 "lower" is disjoint from the wide-character class
"punct".
Being a subclass of the wide-character class "alpha", the wide-
character class "lower" is disjoint from the wide-character class
"digit".
The wide-character class "lower" contains at least those
characters wc which are equal to towlower(wc) and different from
towupper(wc).
The wide-character class "lower" always contains at least the
letters 'a' to 'z'.
Возвращаемое значение (Return value)
The iswlower() function returns nonzero if wc is a wide character
belonging to the wide-character class "lower". Otherwise, it
returns zero.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│iswlower() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, C99.
Примечание (Note)
The behavior of iswlower() depends on the LC_CTYPE category of
the current locale.
This function is not very appropriate for dealing with Unicode
characters, because Unicode knows about three cases: upper,
lower, and title case.
Смотри также (See also)
islower(3), iswctype(3), towlower(3)
