NAME¶

wcsncasecmp - compare two fixed-size wide-character strings, ignoring case

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():

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)).

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.

VERSIONS¶

The wcsncasecmp() function is provided in glibc since version 2.1.

ATTRIBUTES¶

Multithreading (see pthreads(7))¶

The wcsncasecmp() function is thread-safe with exceptions. It can be safely used in multithreaded applications, as long as setlocale(3) is not called to change the locale during its execution.

CONFORMING TO¶

POSIX.1-2008. This function is not specified in POSIX.1-2001, and is not widely available on other systems.

NOTES¶

The behavior of wcsncasecmp() depends on the LC_CTYPE category of the current locale.

SEE ALSO¶

strncasecmp(3), wcsncmp(3)

COLOPHON¶

This page is part of release 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.