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 \ns1\n[.\nn\n], const wchar_t \ns2\n[.\nn\n], size_t \nn\n);

wcsncasecmp():

\n
    Since glibc 2.10:
\n
        _POSIX_C_SOURCE >= 200809L
\n
    Before glibc 2.10:
\n
        _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 (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.

ATTRIBUTES#

For an explanation of the terms used in this section, see attributes(7).

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)