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Theorem intshiftrsign-num

⊦ (* i) i>> (* j) = (# int2bits(i) ≤ i→n(band(j, 31)) ⊃ (i < 0 ⊃ ~1;0);bits2int(sublist(0, # int2bits(i) - i→n(band(j, 31)), int2bits(i))))

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: intshiftright-mone,
Used by units in proved state: byte,
Proof exists?: Yes

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Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 2
Used lemmas: intshiftrsign-if, band-commutativity,
Used spec theorems:
- Used simplifier rules: