def half_value

bend-collections-laws-math@1.0.0.0 · proofs/math/typed/w64add.bend:267

import Base
import bend-collections-laws-math@1.0.0.0/spec/math/w64.bend as SW
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as WU

267def half_value(+a: WU.U64) -> SW.Half.value(a):
268  match a:
269    case WU.U64{+l, +h}:
270      halfval(1n, {==}, l, h, 2147483648, {==})