Linux 2.6 - man page for wcsncasecmp (linux section 3)
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WCSNCASECMP(3) Linux Programmer's Manual WCSNCASECMP(3)
wcsncasecmp - compare two fixed-size wide-character strings, ignoring case
int wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
Since glibc 2.10:
_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
Before glibc 2.10:
The wcsncasecmp() function is the wide-character equivalent of the strncasecmp(3) func-
tion. 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)).
The wcsncasecmp() function returns zero if the wide-character strings at s1 and s2, trun-
cated 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 nega-
tive integer if truncated s1 is smaller than truncated s2, ignoring case.
The wcsncasecmp() function is provided in glibc since version 2.1.
Multithreading (see pthreads(7))
The wcsncasecmp() function is thread-safe with exceptions. It can be safely used in mul-
tithreaded applications, as long as setlocale(3) is not called to change the locale.
POSIX.1-2008. This function is not specified in POSIX.1-2001, and is not widely available
on other systems.
The behavior of wcsncasecmp() depends on the LC_CTYPE category of the current locale.
This page is part of release 3.55 of the Linux man-pages project. A description of the
project, and information about reporting bugs, can be found at
GNU 2013-11-25 WCSNCASECMP(3)
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