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.
wmemset — set wide characters in memory
wchar_t *wmemset(wchar_t *ws, wchar_t wc, size_t n);
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.1‐2008 defers to the ISO C standard.
The wmemset() function shall copy the value of wc
into each of the first n wide characters of the object pointed to by
ws. This function shall not be affected by locale and all
wchar_t values shall be treated identically. The null wide character
and wchar_t values not corresponding to valid characters shall not be
If n is zero, the application shall ensure that ws
is a valid pointer, and the function shall copy zero wide characters.
The wmemset() functions shall return the value of ws.
No errors are defined.
The following sections are informative.
wmemchr(), wmemcmp(), wmemcpy(),
The Base Definitions volume of POSIX.1‐2008,
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2013 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
7, Copyright (C) 2013 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013
Technical Corrigendum 1 applied.) 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 http://www.unix.org/online.html .
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