wcsncasecmp(3) Linux Man Page

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 ], s\
ize_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). allbox; lbx lb lb T{ wcsncasecmp()

Interface	Attribute	Value
T}	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.

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