def val_eta

bend-collections-laws-math@1.0.0.0 · proofs/math/typed/w64add.bend:379

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

379def val_eta(+p: WU.U64) -> {SW.value(p) == Nat.add(v(X.lo(p)), C.shift(32n, v(X.hi(p)))) : Nat}:
380  match p:
381    case WU.U64{+l, +h}:
382      {==}