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Proof step 6 from proof getint-abs (previous step)

dec.int < 0 ⊦ dec.int + mkDecimal(~ dec.int, dec.scale).int = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 7:
⊦ mkDecimal(~ i, j).int = ~ mkDecimal(i, j).int
Proof step 8:
dec.int < 0 ⊦ dec.int + ~ mkDecimal(dec.int, dec.scale).int = 0

Rule argument

spec: decimal inst: name: getint-neg-01 seq: ⊦ mkDecimal(~ i, j).int = ~ mkDecimal(i, j).int subst: [j, i] → [dec.scale, dec.int] flags: rewrite

Additional information

Used terms: dec.scale, dec.int