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Proof step 1 from proof intshiftzero-mone (conclusion)

⊦ ~1 i>>> 16 = 65535

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ i i>>> j = bits2int(sublist(0, # fillsgn(32, int2bits(i)), mklist(false, i→n(band(j, 31))) + fillsgn(32, int2bits(i))))
Proof step 3:
⊦ bits2int(sublist(0, # fillsgn(32, int2bits(~1)), mklist(false, i→n(band(16, 31))) + fillsgn(32, int2bits(~1)))) = 65535

Rule argument

name: intshiftrzero-def rotate: F subst: [j, i] → [16, ~1]

Additional information

Used terms: 16, ~1