Sgd.descend: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/autograd/sgd.bend as Sgd
Lines 109-117 of bendtorch-core@0.1.0.0/src/autograd/sgd.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/autograd/sgd.bend&start_line=109&end_line=117

import Base
import bendtorch-core@0.1.0.0/src/tensor/elementwise.bend as Elementwise
import bendtorch-core@0.1.0.0/src/autograd/gradient.bend as Gradient
import bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend as Backward

# One parameter: p - lr * g, cell by cell, when its slot holds g; unchanged
# when the slot is empty.
def descend(+lr: F32, entry: Backward.Entry) -> Backward.Entry & Result<&2, &2, Error, Unit>:
  Backward.Entry{node, +shape, value, saved, slot} = entry
  match slot:
    case Gradient.Unset{}:
      (Backward.Entry{node, shape, value, saved, Gradient.Unset{}}, Done{Unit{}})
    case Gradient.Held{g}:
      descended(node, shape, saved, Elementwise.binary(Elementwise.Descend{lr}, value, g))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/gradient.bend&name=Slot
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/sgd.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/sgd.bend&name=descended
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend&name=Entry
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise.bend&name=Operation
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/elementwise.bend&name=binary