Tensor.bc_ok: def of bendtorch@1.3.0.0
Import: import bendtorch@1.3.0.0/tensor.bend as Tensor
Lines 89-92 of bendtorch@1.3.0.0/tensor.bend: https://jend.leeeet.dev/read.txt?path=bendtorch@1.3.0.0/tensor.bend&start_line=89&end_line=92

import Base

# a and b broadcast to o
def bc_ok(+a: List<&2, Nat>, +b: List<&2, Nat>, +o: List<&2, Nat>) -> Bool:
  # bend-lint: disable-next bend-lint-rules/performance/eager_branch -- a shape predicate over a list of rank <= 4, once per operation; the types and LAWS.bend read its Bool form not-expected-because: a match would change the definition the proofs reduce, for no measurable gain
  Bool.and(bc_rank(List.length(&2, Nat, a), List.length(&2, Nat, b), List.length(&2, Nat, o)), bc_eq(pad(a, List.length(&2, Nat, o)), pad(b, List.length(&2, Nat, o)), o))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.length
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/tensor.bend&name=bc_eq
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/tensor.bend&name=bc_rank
  https://jend.leeeet.dev/definition.txt?path=bendtorch@1.3.0.0/tensor.bend&name=pad