Function ncdirect_putstr 

pub unsafe extern "C" fn ncdirect_putstr(
    nc: *mut ncdirect,
    channels: u64,
    utf8: *const c_char,
) -> c_int

Output the string |utf8| according to the channels |channels|. Note that ncdirect_putstr() does not explicitly flush output buffers, so it will not necessarily be immediately visible. Returns EOF on error.