PROOF.r64_split: def of bend-osdev-crc@0.1.0.0
Import: import bend-osdev-crc@0.1.0.0/PROOF.bend as PROOF
Lines 33-38 of bend-osdev-crc@0.1.0.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-crc@0.1.0.0/PROOF.bend&start_line=33&end_line=38

import Base
import bend-osdev-word64@0.1.0.0/word64.bend as W
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-crc@0.1.0.0/crc.bend as C

def r64_split(xs: List<&2, U32>, +poly: W.W64, c: W.W64, ys: List<&2, U32>) -> {C.r64.raw(B.append(xs, ys), poly, c) == C.r64.raw(ys, poly, C.r64.raw(xs, poly, c)) : W.W64}:
  match xs:
    case Nil{}:
      {==}
    case Con{h, t}:
      r64_split(t, poly, C.r64.bits(8n, poly, W.W64.xor(c, W.W64.from_u32(U32.and(h, 255)))), ys)

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.and
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=append
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crc@0.1.0.0/crc.bend&name=r64.bits
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-crc@0.1.0.0/crc.bend&name=r64.raw
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-word64@0.1.1.0/word64.bend&name=W64
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-word64@0.1.1.0/word64.bend&name=W64.from_u32
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-word64@0.1.1.0/word64.bend&name=W64.xor