Function estimate_optimal_arity

pub fn estimate_optimal_arity(
    log_block_length: usize,
    digest_size: usize,
    field_size: usize,
) -> usize

Heuristic for estimating the optimal arity (with respect to proof size) for the FRI-based PCS.

log_block_length is the log block length of the packed Reed-Solomon code, i.e., $\ell - \kappa + \mathcal R$.