How portable is code using wmemset()?

Question

Currently our code uses a for-loop for filling a buffer holding a Unicode string with some Unicode character value (of type wchar_t). There's wmemset() function in Visual C++ using which we could replace a loop with a single function call in that code. However we're concerned about portability - we'd like to leave code as portable as possible and so introducing non-portable or poorly portable stuff is a bad idea.

Will using wmemset() hurt portability and to what extent?

Answer 1

It's mentioned in the C++ standard cwchar (Table 48) at least and hence should be pretty standard. So I guess it should not hurt portability