Scan.puts: def of bend-parallel@0.1.0.0
Import: import bend-parallel@0.1.0.0/scan.bend as Scan
Lines 146-160 of bend-parallel@0.1.0.0/scan.bend: https://jend.leeeet.dev/read.txt?path=bend-parallel@0.1.0.0/scan.bend&start_line=146&end_line=160

import Base

# Pass 3's forks, shaped as pass 1's. Leaf i reads s[i] and reads and
# writes only its block of a: no two lanes touch one slot.
def puts(+inc: Bool, +d: Nat, +i: U32, +e: Nat, fa: Array<U32> & Array<U32>, fs: Array<U32> & Array<U32>) -> Two:
  match d:
    case 0n:
      (a, a2) = fa
      (s, s2) = fs
      two.rejoin(a2, s2, puts.leaf(inc, i, e, a, s))
    case 1n+p:
      (a0, a1) = fa
      (s0, s1) = fs
      +j = (i * 2 : U32)
      l r = puts(inc, p, j, e, Array.fork(U32, a0), Array.fork(U32, s0))
        puts(inc, p, (j + 1 : U32), e, Array.fork(U32, a1), Array.fork(U32, s1))
      two.join(l, r)

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.fork
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  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=Base/base.bend&name=U32.mul
  https://jend.leeeet.dev/definition.txt?path=bend-parallel@0.1.0.0/scan.bend&name=Two
  https://jend.leeeet.dev/definition.txt?path=bend-parallel@0.1.0.0/scan.bend&name=puts.leaf
  https://jend.leeeet.dev/definition.txt?path=bend-parallel@0.1.0.0/scan.bend&name=two.join
  https://jend.leeeet.dev/definition.txt?path=bend-parallel@0.1.0.0/scan.bend&name=two.rejoin