def round
import emerging-ezjson@1.3.0.0/src/fixed.bend as Fixedimport Base
252# every digit to the last kept place, last first, rounded half to even
253def round(+nn: Nat, dec: Dec) -> String:
254 match dec:
255 case Dec{+left, right}:
256 round.keep(left, pad(nn, right))