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Diffstat (limited to 'theories/FSets/FSetFullAVL.v')
| -rw-r--r-- | theories/FSets/FSetFullAVL.v | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/theories/FSets/FSetFullAVL.v b/theories/FSets/FSetFullAVL.v index 1fc109f3..a2d8e681 100644 --- a/theories/FSets/FSetFullAVL.v +++ b/theories/FSets/FSetFullAVL.v @@ -11,7 +11,7 @@ * Institution: LRI, CNRS UMR 8623 - Université Paris Sud * 91405 Orsay, France *) -(* $Id: FSetFullAVL.v 10739 2008-04-01 14:45:20Z herbelin $ *) +(* $Id: FSetFullAVL.v 11699 2008-12-18 11:49:08Z letouzey $ *) (** * FSetFullAVL @@ -913,6 +913,14 @@ Module IntMake (I:Int)(X: OrderedType) <: S with Module E := X. change (Raw.Equal s s'); auto. Defined. + Definition eq_dec (s s':t) : { eq s s' } + { ~ eq s s' }. + Proof. + intros (s,b,a) (s',b',a'); unfold eq; simpl. + case_eq (Raw.equal s s'); intro H; [left|right]. + apply equal_2; auto. + intro H'; rewrite equal_1 in H; auto; discriminate. + Defined. + (* specs *) Section Specs. Variable s s' s'': t. |