diff options
| author | Son Ho | 2024-06-12 14:46:52 +0200 |
|---|---|---|
| committer | Son Ho | 2024-06-12 14:46:52 +0200 |
| commit | 1018aa1af83e639a6b41b5650bf3b717e7f8de68 (patch) | |
| tree | aa14af61056233f309cdedf138604f7ac0ba443f /backends/lean/Base/Arith | |
| parent | f5deac2b0f42e2a87fc26da50c902729e0ed1039 (diff) | |
Deactivate the coercion from Nat to Scalar
Diffstat (limited to '')
| -rw-r--r-- | backends/lean/Base/Arith/Scalar.lean | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/backends/lean/Base/Arith/Scalar.lean b/backends/lean/Base/Arith/Scalar.lean index c2e4e24e..8793713b 100644 --- a/backends/lean/Base/Arith/Scalar.lean +++ b/backends/lean/Base/Arith/Scalar.lean @@ -80,4 +80,14 @@ example (x : Int) (h0 : 0 ≤ x) (h1 : x ≤ U32.max) : example (x : U32) (h0 : ¬ x = U32.ofInt 0) : 0 < x.val := by scalar_tac +/- See this: https://aeneas-verif.zulipchat.com/#narrow/stream/349819-general/topic/U64.20trouble/near/444049757 + + We solved it by removing the instance `OfNat` for `Scalar`. + Note however that we could also solve it with a simplification lemma. + However, after testing, we noticed we could only apply such a lemma with + the rewriting tactic (not the simplifier), probably because of the use + of typeclasses. -/ +example {u: U64} (h1: (u : Int) < 2): (u : Int) = 0 ∨ (u : Int) = 1 := by + scalar_tac + end Arith |