fact: Definition pair_eq_dec {A B} (A_eq_dec : forall a a' : A, {a = a'} + {a <> a'}) (B_eq_dec : forall a a' : B, {a = a'} + {a <> a'}) : forall a a' : A * B, {a = a'} + {a <> a'}.
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.Bool.Bool Coq.ZArith.ZArith Coq.Lists.List Fiat.Common.DecideableEnsembles Fiat.Common.EnumType Fiat.Common.BoundedLookup Fiat.Common Fiat.Common.ilist Fiat.Common.Tactics.CacheStringConstant Fiat.Common.IterateBoundedIndex Fiat.Computation Bedrock.Word