Signed.slice: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/signed.bend as Signed
Lines 310-318 of bendtorch-core@0.1.0.0/src/tensor/signed.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/signed.bend&start_line=310&end_line=318

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

# PyTorch's input[..., start:stop:step, ...] with the slice at a signed axis
# `dim`, wrapped among the rank, and signed start and stop: the unsigned
# slice of the bounds. A rank-0 input has no axis, so every dim is refused.
def slice(input: Core.Dynamic, dim: Position, start: Position, stop: Position, +step: U32) ->
  Core.Dynamic & Result<&2, &1, Slice.Error, Core.Dynamic>:
  Core.Packed{+shape, tensor} = input
  +axis = wrap(Shape.rank(shape), dim)
  +n = extent(Shape.dimensions(shape), axis)
  Slice.slice(Core.Packed{shape, tensor}, axis, bound(n, start), bound(n, stop), step)

Uses (12):
  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/shape/core.bend&name=dimensions
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=rank
  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=extent
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/signed.bend&name=wrap
  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