Section: POSIX Programmer's Manual (3P)
This manual page is part of the POSIX Programmer's Manual.
The Linux implementation of this interface may differ (consult
the corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
--- concatenate a wide-character string with part of another
wchar_t *wcsncat(wchar_t *restrict ws1, const wchar_t *restrict ws2,
The functionality described on this reference page is aligned with the
ISO C standard. Any conflict between the requirements described here and the
ISO C standard is unintentional. This volume of POSIX.1-2017 defers to the ISO C standard.
function shall append not more than
wide-character codes (a null wide-character code and wide-character
codes that follow it are not appended) from the array pointed to by
to the end of the wide-character string pointed to by
The initial wide-character code of
shall overwrite the null wide-character code at the end of
A terminating null wide-character code shall always be appended to the
result. If copying takes place between objects that overlap, the
behavior is undefined.
function shall return
no return value is reserved to indicate an error.
No errors are defined.
The following sections are informative.
The Base Definitions volume of POSIX.1-2017,
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1-2017, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, 2018 Edition,
Copyright (C) 2018 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group.
In the event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at
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