.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>

.\"

.\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA)

.\" This is free documentation; you can redistribute it and/or

.\" modify it under the terms of the GNU General Public License as

.\" published by the Free Software Foundation; either version 2 of

.\" the License, or (at your option) any later version.

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.\"

.\" References consulted:

.\"   GNU glibc-2 source code and manual

.\"   Dinkumware C library reference http://www.dinkumware.com/

.\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html

.\"

.TH WCPNCPY 3 2016-03-15 "GNU" "Linux Programmer's Manual"

.SH NAME

wcpncpy \- copy a fixed-size string of wide characters,

returning a pointer to its end

.SH SYNOPSIS

.nf

.B #include <wchar.h>

.PP

.BI "wchar_t *wcpncpy(wchar_t *" dest ", const wchar_t *" src ", size_t " n );

.fi

.PP

.in -4n

Feature Test Macro Requirements for glibc (see

.BR feature_test_macros (7)):

.in

.PP

.BR wcpncpy ():

.PD 0

.ad l

.RS 4

.TP 4

Since glibc 2.10:

_POSIX_C_SOURCE\ >=\ 200809L

.TP

Before glibc 2.10:

_GNU_SOURCE

.RE

.ad

.PD

.SH DESCRIPTION

The

.BR wcpncpy ()

function is the wide-character equivalent

of the

.BR stpncpy (3)

function.

It copies at most

.I n

wide characters from the wide-character

string pointed to by

.IR src ,

including the terminating null wide (L\(aq\\0\(aq),

to the array pointed to by

.IR dest .

Exactly

.I n

wide characters are

written at

.IR dest .

If the length

.IR wcslen(src)

is smaller than

.IR n ,

the remaining wide characters in the array pointed to

by

.I dest

are filled with L\(aq\\0\(aq characters.

If the length

.IR wcslen(src)

is greater than or equal

to

.IR n ,

the string pointed to by

.I dest

will

not be L\(aq\\0\(aq terminated.

.PP

The strings may not overlap.

.PP

The programmer must ensure that there is room for at least

.I n

wide

characters at

.IR dest .

.SH RETURN VALUE

.BR wcpncpy ()

returns a pointer to the last wide character written, that is,

.IR dest + n \-1.

.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 wcpncpy ()

T}	Thread safety	MT-Safe

.TE

.SH CONFORMING TO

POSIX.1-2008.

.SH SEE ALSO

.BR stpncpy (3),

.BR wcsncpy (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/.