NAME
wmemchr — find a
wide character in memory
SYNOPSIS
#include
<wchar.h>
wchar_t *wmemchr(const wchar_t *ws, wchar_t wc, size_t n);
DESCRIPTION
[CX] 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 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 specially.
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.
RETURN VALUE
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.
ERRORS
No errors are defined.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
wmemcmp(3) , wmemcpy(3) , wmemmove(3) , wmemset(3)
XBD <wchar.h>
CHANGE HISTORY
First released in Issue 5. Included for alignment with ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment 1”) (E).
Issue 6
The normative text is updated to avoid use of the term "must" for application requirements.