def fwd.at
import bend-parallel@0.1.0.0/sort.bend as Sortimport Base
import bend-parallel@0.1.0.0/histogram.bend as Hist
244def fwd.at(+c: U32, +kb: Nat, +nb: Nat, t: Array<U32>, r: Array<U32> & U32) -> Hist.Two:
245 (os, +s) = r
246 Hist.Two{fwd.go(nb, c, U32.shln(1, kb), s, t[c]), os}