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Theorem num-i2b-neg

i < ~128 ⊦ i2b((* i)) = i2b(bits2int(lastn(8, int2bits(i))))

Type: A user defined theorem
Validity: The proof is valid.
Features: automatic, localsimp,
Comment:
Used by: bib-neg-high, bib-neg-low, byte-mult-256, out-test-02, out-test-05, out-test-06,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 3
Used lemmas: inbyte, int2byte-out,
Used spec theorems:
- Used simplifier rules:
  - int-basic1/numlsf
  - int-abs/lels-03