wmemchr - find a wide character in memory
wchar_t *wmemchr(const wchar_t *ws, wchar_t wc, size_t n);
[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.1-2017 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.
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.
wmemcmp, wmemcpy, wmemmove, wmemset
First released in Issue 5. Included for alignment with ISO/IEC 9899:1990/Amendment 1:1995 (E).
The normative text is updated to avoid use of the term "must" for application requirements.
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