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Proof step 7 from proof dec2int-not-neg (previous step)

mkDecimal(0, 0) ≤ dec, dec.int / 10 ^ dec.scale < 0, 0 < 10 ^ dec.scale, dec.int < 0 ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 8:
⊦ mkDecimal(0, 0) ≤ dec ↔ 0 ≤ dec.int

Rule argument

spec: inst: name: le-pos seq: ⊦ mkDecimal(0, 0) ≤ dec ↔ 0 ≤ dec.int subst: [dec] → [dec] flags: rewrite, current

Additional information

Used simplifier rules: lels-03: ⊦ i < j → (¬ ¬ j ≤ i ↔ false); from specification int-abs Used terms: dec