Function botan_sys::botan_fpe_fe1_init

pub unsafe extern "C" fn botan_fpe_fe1_init(
    fpe: *mut botan_fpe_t, 
    n: botan_mp_t, 
    key: *const u8, 
    key_len: usize, 
    rounds: usize, 
    flags: u32
) -> c_int