BroadcastLAWS.source_value: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/autograd/broadcast_LAWS.bend as BroadcastLAWS
Lines 17-25 of bendtorch-core@0.1.0.0/src/autograd/broadcast_LAWS.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/autograd/broadcast_LAWS.bend&start_line=17&end_line=25

import Base
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core

# The input value that the specification assigns to one output position: the
# input offset of its right-aligned broadcast projection.
def source_value(input: Core.Dynamic, offsets: Maybe<&1, U32 & U32>) -> Maybe<&2, F32>:
  match offsets:
    case None{}:
      None{}
    case Some{pair}:
      (input_offset, target_offset) = pair
      Core.checked_observe_dynamic(input, input_offset)

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  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=checked_observe_dynamic