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Proof step 5 from proof int2bytes-rec-pos-02 (previous step)

0 < i, i % 256 < 128, 255 < i ⊦ int2bytes(i % 256).last ' = int2bytes(i % 256)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
0 ≤ i, i ≤ 127 ⊦ int2bytes(i) = i2b(i) '

Rule argument

name: int2bytes-le127 rotate: F subst: [i] → [i % 256]

Additional information

Used simplifier rules: ⊦ by ' = by0 ' ↔ by = by0;% ⊦ by '.last = by;% ⊦ ¬ i ≤ j ↔ j < i;% ⊦ 0 < i ∧ 0 < j → ¬ i % j < 0;%i + 1 = i0 ⊦ j < (* i0) → ¬ (* i) < j; Used terms: i % 256