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2 changes: 1 addition & 1 deletion LeroyCompilerVerificationCourse/Constprop.lean
Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@ instance [BEq α] [BEq β] [Hashable α] : BEq (Std.HashMap α β) where
`mk_MINUS a1 a2` produces an expression equivalent to `MINUS a1 a2`
using similar tricks. Note that "expression minus constant" is
always normalized into "expression plus opposite constant",
simplifying the case analyses. *)
simplifying the case analyses.
-/
@[grind] def mk_MINUS (a1 a2 : aexp) : aexp :=
match a1, a2 with
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