fplll contains several algorithms on lattices that rely on
floating-point computations. This includes implementations of the
floating-point LLL reduction algorithm, offering different
speed/guarantees ratios. It also includes a rigorous floating-point
implementation of the Kannan-Fincke-Pohst algorithm that finds a
shortest non-zero lattice vector.
There is no official package available for openSUSE Leap 15.5