TensorLayout.copy_bands: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/tensor_layout.bend as TensorLayout
Lines 63-73 of stelliferous@0.0.2.0/tensor_layout.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/tensor_layout.bend&start_line=63&end_line=73

import Base
import stelliferous@0.0.2.0/storage_buffer.bend as Storage
import stelliferous@0.0.2.0/tensor.bend as Tensors
import stelliferous@0.0.2.0/tensor_band.bend as Bands

# The only layout operation that keeps its argument: (original, copy).
def copy_bands(~Element: Data,status: Tensors.Status,bands: Bands.Bands(~Element),+geometry: Bands.Geometry,+shape: List<&2,U32>,+fill: Element,+workers: U32) ->
  Tensors.Tensor<Element> & Tensors.Tensor<Element>:
  match status:
    case Tensors.Usable{}:
      Storage.bind_pair(~Bands.Bands(~Element),~Bands.Bands(~Element),~(Tensors.Tensor<Element> & Tensors.Tensor<Element>),
        Bands.copy(~Element,bands),left => right =>
          (Tensors.Banded{left,geometry,shape,fill,Tensors.Usable{},workers},Tensors.Banded{right,geometry,shape,fill,Tensors.Usable{},workers}))
    case Tensors.Failed{+problem}:
      (Tensors.Banded{bands,geometry,shape,fill,Tensors.Failed{problem},workers},
        Tensors.Tensor{Tensors.buffer(~Element,fill,0),shape,fill,Tensors.Failed{problem},workers})

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  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=stelliferous@0.0.2.0/storage_buffer.bend&name=bind_pair
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor.bend&name=Status
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor.bend&name=Tensor
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor.bend&name=buffer
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band.bend&name=Bands
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band.bend&name=Geometry
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band.bend&name=copy