def length_projection

bendtorch-core@0.1.0.0 · src/tensor/construction_contract_PROOF.bend:176

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/tensor/lifecycle.bend as Lifecycle
import bendtorch-core@0.1.0.0/src/tensor/observation.bend as Observation

176def length_projection(-shape: Shape.Shape, -original: Storage.Storage,
177  -valid: {Lifecycle.logical_length(original) == Shape.logical_numel(Shape.dimensions(shape)) : Nat}, +index: U32,
178  pair: Storage.Storage & Result<&2, &2, Storage.Error, F32>,
179  -same: {pair == Storage.get(original, index) : Storage.Storage & Result<&2, &2, Storage.Error, F32>}) ->
180  {Observation.after_length_pair(shape, Core.read_result(shape, original, valid, index, pair, same)) == Lifecycle.retained_read(pair) : Nat}:
181  (storage, result) = pair
182  {==}