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'\" t
.\" Copyright, the authors of the Linux man-pages project
.\"
.\" SPDX-License-Identifier: GPL-2.0-or-later
.\"
.TH wcsncat 3 2025-06-28 "Linux man-pages (unreleased)"
.SH NAME
wcsncat \- concatenate two wide-character strings
.SH LIBRARY
Standard C library
.RI ( libc ,\~ \-lc )
.SH SYNOPSIS
.nf
.B #include <wchar.h>
.P
.BR "wchar_t *wcsncat(" "size_t n;"
.BI " wchar_t *restrict " dest ,
.BI " const wchar_t " src "[restrict " n ],
.BI " size_t " n );
.fi
.SH DESCRIPTION
The
.BR wcsncat ()
function is the wide-character equivalent of the
.BR strncat (3)
function.
It copies at most
.I n
wide characters from the wide-character
string pointed to by
.I src
to the end of the wide-character string pointed
to by
.IR dest ,
and adds a terminating null wide character (L\[aq]\[rs]0\[aq]).
.P
The strings may not overlap.
.P
The programmer must ensure that there is room for at least
.IR wcslen(dest) + n +1
wide characters at
.IR dest .
.SH RETURN VALUE
.BR wcsncat ()
returns
.IR dest .
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lbx lb lb
l l l.
Interface Attribute Value
T{
.na
.nh
.BR wcsncat ()
T} Thread safety MT-Safe
.TE
.SH STANDARDS
C11, POSIX.1-2008.
.SH HISTORY
POSIX.1-2001, C99.
.SH SEE ALSO
.BR strncat (3),
.BR wcscat (3)
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