def fbe4

bend-collections-laws-math@1.0.0.0 · proofs/math/typed/fixbytes.bend:195

import Base
import bend-collections-laws-math@1.0.0.0/spec/lib/common.bend as C
import bend-collections-laws-math@1.0.0.0/spec/math/generic.bend as SG
import bend-collections-laws-math@1.0.0.0/spec/math/fixed.bend as SF
import bend-collections-laws-math@1.0.0.0/src/math/fixed.bend as F

195def fbe4(+b3: U32, +b2: U32, +b1: U32, +b0: U32, t: List<&2, U32>) -> {SF.mval(~U32, ~SG.u32_val, F.u32_from_bytes_be(Con{b3, Con{b2, Con{b1, Con{b0, t}}}})) == SF.from_le(4n, C.reverse(Nat, SF.nats(Con{b3, Con{b2, Con{b1, Con{b0, t}}}}))) : Maybe<&2, Nat>}:
196  match t:
197    case Nil{}:
198      from4_ok(b0, b1, b2, b3)
199    case Con{+b4, t5}:
200      Equal.sym(Maybe<&2, Nat>, SF.from_le(4n, C.reverse(Nat, SF.nats(Con{b3, Con{b2, Con{b1, Con{b0, Con{b4, t5}}}}}))), None{}, rev_none(4n, SF.nats(Con{b3, Con{b2, Con{b1, Con{b0, Con{b4, t5}}}}}), {==}))