#include <wchar.h>
wchar_t *wmemcpy(wchar_t * dest , const wchar_t * src , size_t n );
DESCRIPTION
The wmemcpy function is the wide-character equivalent of the memcpy
function. It copies n wide characters from the array starting at src to the array starting at dest.
The arrays may not overlap; use wmemmove(3) to copy between overlapping
arrays.
The programmer must ensure that there is room for at least n wide
characters at dest.