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diff --git a/theories/Reals/SplitAbsolu.v b/theories/Reals/SplitAbsolu.v
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+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+(*i      $Id: SplitAbsolu.v,v 1.6.2.1 2004/07/16 19:31:15 herbelin Exp $       i*)
+
+Require Import Rbasic_fun.
+
+Ltac split_case_Rabs :=
+  match goal with
+  |  |- context [(Rcase_abs ?X1)] =>
+      case (Rcase_abs X1); try split_case_Rabs
+  end.
+
+
+Ltac split_Rabs :=
+  match goal with
+  | id:context [(Rabs _)] |- _ => generalize id; clear id; try split_Rabs
+  |  |- context [(Rabs ?X1)] =>
+      unfold Rabs in |- *; try split_case_Rabs; intros
+  end.
+\ No newline at end of file