def hb2n
import bend-collections-laws-math@1.0.0.0/proofs/math/typed/f64sqs.bend as F64sqsimport Base
import bend-collections-laws-math@1.0.0.0/spec/lib/common.bend as C
import bend-collections-laws-math@1.0.0.0/spec/math/f64.bend as SF
20def hb2n(+c: Bool) -> {C.half(SF.b2n(c)) == 0n : Nat}:
21 match c:
22 case True{}:
23 {==}
24 case False{}:
25 {==}