Function mex_sys::__stdio_common_vswprintf_p

pub unsafe extern "C" fn __stdio_common_vswprintf_p(
    _Options: c_ulonglong, 
    _Buffer: *mut wchar_t, 
    _BufferCount: size_t, 
    _Format: *const wchar_t, 
    _Locale: _locale_t, 
    _ArgList: va_list
) -> c_int