TensorBandWindow.window: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/tensor_band_window.bend as TensorBandWindow
Lines 41-59 of stelliferous@0.0.2.0/tensor_band_window.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&start_line=41&end_line=59

import Base
import stelliferous@0.0.2.0/tensor_band.bend as Bands

# Output partition boundaries follow the input cores, with the first and last
# cores also owning any output rows introduced by padding. The halos hold
# every window row outside the core, so a window is its image rows exactly.
# Caller geometry checks establish positive stride/height and bounded products.
def window(geometry: Geometry,+first: U32,+count: U32) -> RowWindow:
  Geometry{Bands.Geometry{batch,channels,+height,width},+kernel,+stride,+padding,+output_height,output_width} = geometry
  +image = (first / height : U32)
  +core_first = (first % height : U32)
  +core_end = (core_first + count : U32)
  +out_first = U32.min(output_height,ceiling(core_first,stride))
  +out_end = Bool.pick(U32,U32.is_eq(core_end,height),output_height,U32.min(output_height,ceiling(core_end,stride)))
  +needed_first = start(height,out_first,stride,padding)
  +needed_end = U32.min(height,subtract_clipped((subtract_clipped(out_end,1) * stride + kernel : U32),padding))
  +above_first = (image * height + needed_first : U32)
  +above_end = (image * height + U32.min(core_first,needed_end) : U32)
  +below_first = (image * height + U32.max(core_end,needed_first) : U32)
  +below_end = (image * height + needed_end : U32)
  nonempty(U32.is_lt(out_first,out_end),RowWindow{Rows{(image * output_height + out_first : U32),subtract_clipped(out_end,out_first)},
    clipped(above_first,above_end),clipped(below_first,below_end),clipped(above_first,below_end)})

Uses (19):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.div
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.max
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.min
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mod
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mul
  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_window.bend&name=Geometry
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&name=RowWindow
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&name=Rows
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&name=ceiling
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&name=clipped
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&name=nonempty
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&name=start
  https://jend.leeeet.dev/definition.txt?path=stelliferous@0.0.2.0/tensor_band_window.bend&name=subtract_clipped