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.TH WCSNCMP 3  2015-08-08 "GNU" "Linux Programmer's Manual"

.SH NAME

wcsncmp \- compare two fixed-size wide-character strings

.SH SYNOPSIS

.nf

.B #include <wchar.h>

.PP

.BI "int wcsncmp(const wchar_t *" s1 ", const wchar_t *" s2 ", size_t " n );

.fi

.SH DESCRIPTION

The

.BR wcsncmp ()

function is the wide-character equivalent of the

.BR strncmp (3)

function.

It compares the wide-character string pointed to by

.I s1

and the

wide-character string pointed to by

.IR s2 ,

but at most

.I n

wide

characters from each string.

In each string, the comparison extends only up

to the first occurrence of a null wide character (L\(aq\\0\(aq), if any.

.SH RETURN VALUE

The

.BR wcsncmp ()

function returns zero if the wide-character strings at

.I s1

and

.IR s2 ,

truncated to at most length

.IR n ,

are equal.

It returns an integer greater than zero if at the first differing position

.I i

.RI ( i

<

.IR n ),

the corresponding wide-character

.I s1[i]

is

greater than

.IR s2[i] .

It returns an integer less than zero if at the first

differing position

.I i

.RI (i

<

.IR n ),

the corresponding

wide-character

.I s1[i]

is less than

.IR s2[i] .

.SH ATTRIBUTES

For an explanation of the terms used in this section, see

.BR attributes (7).

.TS

allbox;

lb lb lb

l l l.

Interface	Attribute	Value

T{

.BR wcsncmp ()

T}	Thread safety	MT-Safe

.TE

.SH CONFORMING TO

POSIX.1-2001, POSIX.1-2008, C99.

.SH SEE ALSO

.BR strncmp (3),

.BR wcsncasecmp (3)

.SH COLOPHON

This page is part of release 4.15 of the Linux

.I man-pages

project.

A description of the project,

information about reporting bugs,

and the latest version of this page,

can be found at

\%https://www.kernel.org/doc/man\-pages/.