pub unsafe extern "C" fn _qadic_exp_balanced(
    rop: *mut fmpz,
    op: *const fmpz,
    v: mp_limb_signed_t,
    len: mp_limb_signed_t,
    a: *const fmpz,
    j: *const mp_limb_signed_t,
    lena: mp_limb_signed_t,
    p: *const fmpz,
    N: mp_limb_signed_t,
    pN: *const fmpz
)