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x SuSE Linux 13.1-RELEASEx
wcsncasecmp(3) Library Functions Manual wcsncasecmp(3)
NAME
wcsncasecmp - compare two fixed-size wide-character strings, ignoring
case
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <wchar.h>
int wcsncasecmp(const wchar_t s1[.n], const wchar_t s2[.n], 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
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 (towup-
per(3), towlower(3)).
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.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
+-------------------------------------+---------------+----------------+
|Interface | Attribute | Value |
+-------------------------------------+---------------+----------------+
|wcsncasecmp() | Thread safety | MT-Safe locale |
+-------------------------------------+---------------+----------------+
STANDARDS
POSIX.1-2008.
HISTORY
glibc 2.1.
NOTES
The behavior of wcsncasecmp() depends on the LC_CTYPE category of the
current locale.
SEE ALSO
strncasecmp(3), wcsncmp(3)
Linux man-pages 6.04 2023-03-30 wcsncasecmp(3)
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