From 0eb62047b052cb4fbf842525170dd916679e8b7e Mon Sep 17 00:00:00 2001
From: Son Ho
Date: Mon, 18 Sep 2023 19:56:27 +0200
Subject: Simplify some lemmas and prove that the scalars and Vec are inhabited

---
 backends/lean/Base/Primitives/Scalar.lean | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'backends/lean/Base/Primitives/Scalar.lean')

diff --git a/backends/lean/Base/Primitives/Scalar.lean b/backends/lean/Base/Primitives/Scalar.lean
index 55227a9f..fecb0d1d 100644
--- a/backends/lean/Base/Primitives/Scalar.lean
+++ b/backends/lean/Base/Primitives/Scalar.lean
@@ -395,6 +395,9 @@ def Scalar.cast {src_ty : ScalarTy} (tgt_ty : ScalarTy) (x : Scalar src_ty) : Re
 @[reducible] def U64   := Scalar .U64
 @[reducible] def U128  := Scalar .U128
 
+instance (ty : ScalarTy) : Inhabited (Scalar ty) := by
+  constructor; cases ty <;> apply (Scalar.ofInt 0)
+
 -- TODO: below: not sure this is the best way.
 -- Should we rather overload operations like +, -, etc.?
 -- Also, it is possible to automate the generation of those definitions
-- 
cgit v1.2.3

