def planned_retains

bendtorch-core@0.1.0.0 · src/autograd/broadcast_PROOF.bend:55

import Base
import bendtorch-core@0.1.0.0/src/shape/core.bend as Shape
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core
import bendtorch-core@0.1.0.0/src/tensor/layout.bend as Layout
import bendtorch-core@0.1.0.0/src/autograd/broadcast.bend as Broadcast
import bendtorch-core@0.1.0.0/src/autograd/broadcast_LAWS.bend as Laws

55def planned_retains(input: Core.Dynamic, +target: Shape.Shape, result: Result<&2, &2, Shape.Error, Shape.BroadcastPlan>) ->
56  Laws.Retained<input, Broadcast.planned(input, target, result)>:
57  match result:
58    case Fail{error}:
59      Laws.Retained{property => {==}}
60    case Done{+plan}:
61      fitted_retains(input, target, plan, Layout.words_same(Shape.dimensions(Shape.output_shape(plan)), Shape.dimensions(target)))