wcsncat
extern wchar_t *wcsncat(wchar_t *dest, const wchar_t *src, size_t srcLength);
B_DEFINE_WEAK_ALIAS(__wcsncat, wcsncat);
wchar_t* result = wcsncat(destination, source, 0);
wchar_t* result = wcsncat(destination, source, 6);
wchar_t* result = wcsncat(destination, source, 20);