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 IEEE Std 1003.1-2001 (“POSIX.1”) 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), the Base Definitions volume of IEEE Std 1003.1-2001 (“POSIX.1”), <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 DESCRIPTION is updated to avoid use of the term "must" for application requirements.
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