Function flint_sys::fmpz_lucas_chain_double

pub unsafe extern "C" fn fmpz_lucas_chain_double(
    U2m: *mut fmpz, 
    U2m1: *const fmpz, 
    Um: *const fmpz, 
    Um1: *const fmpz, 
    A: *const fmpz, 
    B: *const fmpz, 
    n: *const fmpz
)

See the FLINT Documentation for this function.