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Proof step 1 from proof ushort-band-shift-01 (conclusion)

⊦ band(s2i(sho) i>> 8, 255) = us2i(sho) / 256

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ band(s2i(sho) i>> 8, 255) = band(us2i(sho) i>> 8, 255)
Proof step 3:
⊦ band(us2i(sho) i>> 8, 255) = us2i(sho) / 256

Rule argument

name: ushort-band-shift rotate: F subst: [sho] → [sho]

Additional information

Used terms: sho