Bendtorch.csq: def of bendtorch@1.3.0.0
Import: import bendtorch@1.3.0.0/main.bend as Bendtorch
Lines 1694-1700 of bendtorch@1.3.0.0/main.bend: https://jend.leeeet.dev/read.txt?path=bendtorch@1.3.0.0/main.bend&start_line=1694&end_line=1700

import Base

# acc + (a[j] - mu)·(a[j] - mu) for j = idx..idx + k, in order
def csq(k: Nat, +idx: U32, +mu: F32, acc: F32, r: Array<F32> & F32) -> AS:
  match k r:
    case 0n Tuple{a, +x}:
      AS{a, (acc + ((x - mu : F32) * (x - mu : F32) : F32) : F32)}
    case 1n+q Tuple{a, +x}:
      csq(q, (idx + 1 : U32), mu, (acc + ((x - mu : F32) * (x - mu : F32) : F32) : F32), Array.get(F32, a, (idx + 1 : U32)))

Uses (12):
  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=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=F32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.sub
  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/main.bend&name=AS