ReducePROOF.parallel_retains: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/autograd/reduce_PROOF.bend as ReducePROOF
Lines 188-200 of bendtorch-core@0.1.0.0/src/autograd/reduce_PROOF.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/autograd/reduce_PROOF.bend&start_line=188&end_line=200

import Base
import bendtorch-core@0.1.0.0/src/shape/core.bend as Shape
import bendtorch-core@0.1.0.0/src/storage/main.bend as Storage
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core
import bendtorch-core@0.1.0.0/src/autograd/reduce.bend as Reduce
import bendtorch-core@0.1.0.0/src/autograd/reduce_LAWS.bend as Laws

def parallel_retains(+shape: Shape.Shape, tensor: Core.Tensor<shape>, +target: Shape.Shape, +plan: Shape.BroadcastPlan,
  result: Result<&2, &1, Core.Error, Core.Tensor<target>>) ->
  Laws.Retained<Core.Packed{shape, tensor}, Reduce.parallel_allocated(Core.Packed{shape, tensor}, target, plan, result)>:
  match result:
    case Fail{error}:
      Laws.Retained{property => {==}}
    case Done{Core.TTensor{storage, exact}}:
      match storage:
        case Storage.Empty{}:
          Laws.Retained{property => {==}}
        case Storage.Owned{+depth, +length, array, balanced, valid}:
          indexed_retains(shape, tensor, target, plan, Core.TTensor{Storage.Owned{depth, length, array, balanced, valid}, exact}, depth, length,
            valid, exact, Shape.index_map(plan))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/reduce.bend&name=parallel_allocated
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/reduce_LAWS.bend&name=Retained
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/reduce_PROOF.bend&name=indexed_retains
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=BroadcastPlan
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Shape
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=index_map
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/main.bend&name=Storage
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=Dynamic
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=Tensor