PROOFRsdp.ckr.w20: def of bend-osdev-acpi@0.1.2.0
Import: import bend-osdev-acpi@0.1.2.0/PROOF_rsdp.bend as PROOFRsdp
Lines 186-191 of bend-osdev-acpi@0.1.2.0/PROOF_rsdp.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-acpi@0.1.2.0/PROOF_rsdp.bend&start_line=186&end_line=191

import Base
import bend-osdev-word64@0.1.1.1/word64.bend as W
import bend-osdev-bytes@0.1.1.1/bytes.bend as B
import bend-osdev-bytes@0.1.1.1/LAWS.bend as BL
import bend-osdev-acpi@0.1.2.0/rsdp.bend as P
import bend-osdev-acpi@0.1.2.0/PROOF_whole.bend as WH

def ckr.w20(+k: U32, +oem: B.Octets, +oem6: {B.Octets.len(oem) == 6n : Nat}, +rev: U32, +rsdt: U32, +x: W.W64, +y: B.Octets) -> {B.Octets.le32_at(B.Octets.append(B.Octets.append(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x))), y), 20n) == Some{36} : Maybe<&2, U32>}:
  %Equal.sym(Maybe<&2, U32>, B.Octets.le32_at(B.Octets.append(B.Octets.append(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x))), y), 20n), B.Octets.le32_at(B.Octets.append(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x))), 20n), BL.octets_le32_at_append_le(B.Octets.append(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x))), y, 20n, ckr.le_by(Nat.add(20n, 4n), B.Octets.append(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x))), 32n, ckr.lp(k, oem, oem6, rev, rsdt, x), {==}))) : {_ == Some{36} : Maybe<&2, U32>}
  %Equal.cong(Nat, Nat, z => Nat.add(z, 0n), B.Octets.len(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt)))))), 20n, ckr.l20(k, oem, oem6, rev, rsdt)) : {B.Octets.le32_at(B.Octets.append(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x))), _) == Some{36} : Maybe<&2, U32>}
  %Equal.sym(Maybe<&2, U32>, B.Octets.le32_at(B.Octets.append(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x))), Nat.add(B.Octets.len(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt)))))), 0n)), B.Octets.le32_at(B.Octets.append(B.Octets.le32(36), B.Octets.le64(x)), 0n), BL.octets_le32_at_append_add(B.Octets.append(P.AcpiRsdp.signature(), B.Octets.append(B.Octets.of_list([k]), B.Octets.append(oem, B.Octets.append(B.Octets.of_list([rev]), B.Octets.le32(rsdt))))), B.Octets.append(B.Octets.le32(36), B.Octets.le64(x)), 0n)) : {_ == Some{36} : Maybe<&2, U32>}
  %Equal.sym(Maybe<&2, U32>, B.Octets.le32_at(B.Octets.append(B.Octets.le32(36), B.Octets.le64(x)), 0n), B.Octets.le32_at(B.Octets.le32(36), 0n), BL.octets_le32_at_append_le(B.Octets.le32(36), B.Octets.le64(x), 0n, WH.ckw.l4(36))) : {_ == Some{36} : Maybe<&2, U32>}
  BL.octets_le32_round_trip(36)

Uses (23):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.cong
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.2.0/PROOF_rsdp.bend&name=ckr.l20
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.2.0/PROOF_rsdp.bend&name=ckr.le_by
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.2.0/PROOF_rsdp.bend&name=ckr.lp
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.2.0/PROOF_whole.bend&name=ckw.l4
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-acpi@0.1.2.0/rsdp.bend&name=AcpiRsdp.signature
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/LAWS.bend&name=octets_le32_at_append_add
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/LAWS.bend&name=octets_le32_at_append_le
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/LAWS.bend&name=octets_le32_round_trip
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/bytes.bend&name=Octets
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/bytes.bend&name=Octets.append
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/bytes.bend&name=Octets.le32
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/bytes.bend&name=Octets.le32_at
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/bytes.bend&name=Octets.le64
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/bytes.bend&name=Octets.len
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.1/bytes.bend&name=Octets.of_list
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-word64@0.1.1.1/word64.bend&name=W64