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Proof step 2 from proof uint2int-invsucc (previous step)

j < 0 ⊦ bits2int(bitsinvert(uint2bits(~ j)) +1) = j

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ bits2int(sgn(bits)) = bits2int(bits)
Proof step 4:
j < 0 ⊦ bits2int(sgn(bitsinvert(uint2bits(~ j)) +1)) = j

Rule argument

name: bits2int-sgn rotate: T subst: [bits] → [bitsinvert(uint2bits(~ j)) +1]

Additional information

Used terms: bitsinvert(uint2bits(~ j)) +1