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Proof step 11 from proof int2bytes-zero (previous step)

int2bytes(i) = i2b(0) ', i < 0, i < ~128 ⊦ i = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 12:
⊦ i < ~ 128 → int2bytes(i) = int2bytes((i - 255) / 256) + int2bytes(i % 256).last '

Rule argument

name: int2bytes-rec255-neg rotate: F subst: [i] → [i]

Additional information

Used simplifier rules: int2bytes-empty: ⊦ int2bytes(i) ≠ [];%j0 ≠ 0, j ≤ j0 ⊦ i < (* j) → i < (* j0);% ⊦ by ' = bytes + by0 ' ↔ by = by0 ∧ bytes = [];% ⊦ (bytes + bytes0) + bytes1 = bytes + bytes0 + bytes1; Used terms: i