сравнить две строки фиксированного размера широких символов, игнорируя регистр (compare two fixed-size wide-character strings, ignoring case)
Имя (Name)
wcsncasecmp - compare two fixed-size wide-character strings,
ignoring case
Синопсис (Synopsis)
#include <wchar.h>
int wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
wcsncasecmp():
Since glibc 2.10:
_POSIX_C_SOURCE >= 200809L
Before glibc 2.10:
_GNU_SOURCE
Описание (Description)
The wcsncasecmp() function is the wide-character equivalent of
the strncasecmp(3) function. It compares the wide-character
string pointed to by s1 and the wide-character string pointed to
by s2, but at most n wide characters from each string, ignoring
case differences (towupper(3), towlower(3)).
Возвращаемое значение (Return value)
The wcsncasecmp() function returns zero if the wide-character
strings at s1 and s2, truncated to at most length n, are equal
except for case distinctions. It returns a positive integer if
truncated s1 is greater than truncated s2, ignoring case. It
returns a negative integer if truncated s1 is smaller than
truncated s2, ignoring case.
Версии (Versions)
The wcsncasecmp() function is provided in glibc since version
2.1.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│wcsncasecmp() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
POSIX.1-2008. This function is not specified in POSIX.1-2001,
and is not widely available on other systems.
Примечание (Note)
The behavior of wcsncasecmp() depends on the LC_CTYPE category of
the current locale.
Смотри также (See also)
strncasecmp(3), wcsncmp(3)
