Availability:C-language interface function
atom_t PL_new_atom_wchars(size_t
len, const pl_wchar_t *s)Create atom from wide-character string as PL_new_atom_nchars()
does for ISO-Latin-1 strings. If s only contains ISO-Latin-1
characters a normal byte-array atom is created. If len is (size_t)-1,
it is computed from s using wcslen(). See PL_new_atom()
for error handling.