(* Copyright (C) 2000, HELM Team. * * This file is part of HELM, an Hypertextual, Electronic * Library of Mathematics, developed at the Computer Science * Department, University of Bologna, Italy. * * HELM is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * HELM is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HELM; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. * * For details, see the HELM World-Wide-Web page, * http://cs.unibo.it/helm/. *) exception WrongUriToInductiveDefinition exception ReferenceToConstant exception ReferenceToVariable exception ReferenceToCurrentProof exception ReferenceToInductiveDefinition val whd : ?delta:int -> ?subst:NCic.substitution -> NCic.context -> NCic.term -> NCic.term val are_convertible : ?subst:NCic.substitution -> ?metasenv:NCic.metasenv -> NCic.context -> NCic.term -> NCic.term -> bool (* performs head beta/(delta)/cast reduction; the default is to not perform delta reduction; if provided, ~upto is the maximum number of beta redexes reduced *) val head_beta_reduce: ?delta:int -> ?upto:int -> NCic.term -> NCic.term