SignedLAWS.signed_slice_bounds: law of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/signed_LAWS.bend as SignedLAWS
Lines 346-358 of bendtorch-core@0.1.0.0/src/tensor/signed_LAWS.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/signed_LAWS.bend&start_line=346&end_line=358

import Base
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core
import bendtorch-core@0.1.0.0/src/tensor/signed.bend as Signed
import bendtorch-core@0.1.0.0/src/tensor/slice.bend as Slice

# A signed slice is the unsigned slice at the wrapped axis of the bounds of
# its start and stop among that axis's extent; slice_LAWS.bend's clamp then
# gives PyTorch's.
law signed_slice_bounds:
  for input: Core.Dynamic
  for +dim: Signed.Position
  for start: Signed.Position
  for stop: Signed.Position
  for +step: U32
  {Signed.slice(input, dim, start, stop, step) ==
    Slice.slice(input, axis_of(input, dim), Signed.bound(extent_of(input, axis_of(input, dim)), start),
      Signed.bound(extent_of(input, axis_of(input, dim)), stop), step) :
    Core.Dynamic & Result<&2, &1, Slice.Error, Core.Dynamic>}

Uses (11):
  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=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/signed.bend&name=Position
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/signed.bend&name=bound
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/signed.bend&name=slice
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/signed_LAWS.bend&name=axis_of
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/signed_LAWS.bend&name=extent_of
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/slice.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/slice.bend&name=slice