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Proof step 1 from proof ushort-band-shift (conclusion)

⊦ band(s2i(sho) i>> 8, 255) = band(us2i(sho) i>> 8, 255)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ 0 ≤ s2i(sho) → us2i(sho) = s2i(sho)
Proof step 3:
¬ 0 ≤ s2i(sho) ⊦ band(s2i(sho) i>> 8, 255) = band(us2i(sho) i>> 8, 255)

Rule argument

name: ushort-pos rotate: F subst: [sho] → [sho]

Additional information

Used simplifier rules: ⊦ band(i, j) = band(j, i); Used terms: sho