Function dsa_set_pqg 

pub unsafe extern "C" fn dsa_set_pqg(
    p: *const c_uchar,
    plen: c_ulong,
    q: *const c_uchar,
    qlen: c_ulong,
    g: *const c_uchar,
    glen: c_ulong,
    key: *mut dsa_key,
) -> c_int