PermutationMapping.words_valid_rank: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/permutation_mapping.bend as PermutationMapping
Lines 404-415 of bendtorch-core@0.1.0.0/src/tensor/permutation_mapping.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/permutation_mapping.bend&start_line=404&end_line=415

import Base
import bendtorch-core@0.1.0.0/src/shape/core.bend as Shape
import bendtorch-core@0.1.0.0/src/tensor/layout.bend as Layout

def words_valid_rank(+dimensions: List<&2, U32>, +values: List<&2, U32>, valid: Layout.WordsValid(dimensions, values)) ->
  {Shape.rank_dimensions(values) == Shape.rank_dimensions(dimensions) : Nat}:
  match dimensions values:
    case Nil{} Nil{}:
      {==}
    case +dimension <> +dt +value <> +vt:
      Layout.WStep{bound, tail} = valid
      Equal.cong(Nat, Nat, n => 1n+n, Shape.rank_dimensions(vt), Shape.rank_dimensions(dt), words_valid_rank(dt, vt, tail))
    case Nil{} head <> tail:
      match valid:
    case head <> tail Nil{}:
      match valid:

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.cong
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  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=rank_dimensions
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/layout.bend&name=WordsValid
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/layout.bend&name=WordsValidStep