wcsncasecmp - Man Page

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 (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).

InterfaceAttributeValue
wcsncasecmp()Thread safetyMT-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)

Referenced By

strcasecmp(3), wcsncmp(3).

2023-10-31 Linux man-pages 6.06