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chore: simp only
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src/Init/Data/BitVec/Lemmas.lean

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@@ -6426,7 +6426,7 @@ theorem cpopNatRec_cons_eq_toNat_add_cpopNatRec_of_lt {x : BitVec w} {b : Bool}
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induction n generalizing acc
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· omega
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· case _ n ihn =>
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simp
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simp only [cpopNatRec_succ]
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by_cases hlt : w < n
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· specialize ihn (acc := acc + ((cons b x).getLsbD n).toNat) (by omega)
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rw [ihn, Nat.add_left_cancel_iff, getLsbD_cons]

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