The wmemchr() function shall locate the first occurrence of
wc in the initial 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 treated
If n is zero, the application shall ensure that ws is
a valid pointer and the function behaves as if no valid
occurrence of wc is found.
The wmemchr() function shall return a pointer to the located
wide character, or a null pointer if the wide character does
not occur in the object.
No errors are defined.
The following sections are informative.
wmemcmp() , wmemcpy() , wmemmove() , wmemset()
, the Base Definitions volume of
IEEE Std 1003.1-2001, <wchar.h>
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 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