def hst
import bend-collections@1.0.0.0/src/math/generic.bend as Genericimport Base
import bend-collections@1.0.0.0/src/math/num.bend as N
214def hst(~T: Data, ~op: N.Op<T> -> T, ~test: N.Test<T> -> Bool, +x: T) -> T & Bool:
215 (op(N.Half{x}), test(N.Odd{op(N.Half{x})}))