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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: tacred.mli,v 1.21.2.1 2004/07/16 19:30:46 herbelin Exp $ i*)
+
+(*i*)
+open Names
+open Term
+open Environ
+open Evd
+open Reductionops
+open Closure
+open Rawterm
+(*i*)
+
+(*s Reduction functions associated to tactics. \label{tacred} *)
+
+val is_evaluable : env -> evaluable_global_reference -> bool
+
+exception Redelimination
+
+(* Red (raise Redelimination if nothing reducible) *)
+val red_product : reduction_function
+
+(* Hnf *)
+val hnf_constr :  reduction_function
+
+(* Simpl *)
+val nf :  reduction_function
+
+(* Unfold *)
+val unfoldn : 
+  (int list * evaluable_global_reference) list ->  reduction_function
+
+(* Fold *)
+val fold_commands : constr list ->  reduction_function
+
+(* Pattern *)
+val pattern_occs : (int list * constr) list ->  reduction_function
+(* Rem: Lazy strategies are defined in Reduction *)
+
+(* Call by value strategy (uses Closures) *)
+val cbv_norm_flags : Closure.RedFlags.reds ->  reduction_function
+  val cbv_beta : local_reduction_function
+  val cbv_betaiota : local_reduction_function
+  val cbv_betadeltaiota :  reduction_function
+  val compute :  reduction_function  (* = [cbv_betadeltaiota] *)
+
+(* [reduce_to_atomic_ind env sigma t] puts [t] in the form [t'=(I args)]
+   with [I] an inductive definition;
+   returns [I] and [t'] or fails with a user error *)
+val reduce_to_atomic_ind : env ->  evar_map -> types -> inductive * types
+
+(* [reduce_to_quantified_ind env sigma t] puts [t] in the form
+   [t'=(x1:A1)..(xn:An)(I args)] with [I] an inductive definition;
+   returns [I] and [t'] or fails with a user error *)
+val reduce_to_quantified_ind : env ->  evar_map -> types -> inductive * types
+
+(* [reduce_to_quantified_ref env sigma ref t] try to put [t] in the form
+   [t'=(x1:A1)..(xn:An)(ref args)] and raise Not_found if not possible *)
+val reduce_to_quantified_ref :
+  env ->  evar_map -> Libnames.global_reference -> types -> types
+
+val reduce_to_atomic_ref :
+  env ->  evar_map -> Libnames.global_reference -> types -> types
+
+type red_expr = (constr, evaluable_global_reference) red_expr_gen
+
+val contextually : bool -> constr occurrences -> reduction_function
+  -> reduction_function
+val reduction_of_redexp : red_expr -> reduction_function
+
+val declare_red_expr : string -> reduction_function -> unit
+
+(* Opaque and Transparent commands. *)
+val set_opaque_const      : constant -> unit
+val set_transparent_const : constant -> unit
+
+val set_opaque_var      : identifier -> unit
+val set_transparent_var : identifier -> unit