Precompute digit decomposition for hoisted fast rotations
Source:R/methods-eval.R
eval_fast_rotation_precompute.RdComputes the digit decomposition of a ciphertext once so that
multiple eval_fast_rotation() calls against the same ciphertext
avoid redoing it. The cyclotomic order m (typically 2 * N,
where N is the ring dimension) is required by eval_fast_rotation().