Tensor.scatter_l: def of bendtorch@1.3.0.0
Import: import bendtorch@1.3.0.0/tensor.bend as Tensor
Lines 189-195 of bendtorch@1.3.0.0/tensor.bend: https://jend.leeeet.dev/read.txt?path=bendtorch@1.3.0.0/tensor.bend&start_line=189&end_line=195

import Base

# g[m(j)] = g[m(j)] + x[j] for k positions from j; rx holds x[j], rg holds g[m(j)]
def scatter_l(k: Nat, +j: U32, +m: IMap, rx: Array<F32> & F32, rg: Array<F32> & F32) -> P2:
  match k rx rg:
    case 0n Tuple{x, u} Tuple{g, w}:
      P2{x, g}
    case 1n+p Tuple{x, +u} Tuple{g, +w}:
      scatter_l(p, (j + 1 : U32), m, Array.get(F32, x, (j + 1 : U32)), Array.get(F32, Array.set(F32, g, imap(m, j), (w + u : F32)), imap(m, (j + 1 : U32))))

Uses (13):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array.get
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Array.set
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  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=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/tensor.bend&name=IMap
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/tensor.bend&name=P2
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/tensor.bend&name=imap