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WCSNCASECMP(3) Linux Programmer's Manual WCSNCASECMP(3)
wcsncasecmp - compare two fixed-size wide-character strings, ignoring case
#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:
_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
Before glibc 2.10:
_GNU_SOURCE
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)).
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.
The wcsncasecmp() function is provided in glibc since version 2.1.
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.
strncasecmp(3), wcsncmp(3)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
GNU 2010-09-15 WCSNCASECMP(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface