def shl_pick
import bend-collections@1.0.0.0/src/math/w64.bend as W64import Base
import bend-collections@1.0.0.0/src/math/u64.bend as W
238def shl_pick(+a: W.U64, +k: Nat, small: Bool) -> W.U64:
239 match small:
240 case True{}:
241 shl_lt(a, k)
242 case False{}:
243 shl_ge(a, k)