source: branches/f4grobner/ring-and-order.lisp@ 3552

;;; -*-  Mode: Lisp -*- 

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;;;                                                                              

;;;  Copyright (C) 1999, 2002, 2009, 2015 Marek Rychlik <rychlik@u.arizona.edu>          

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;;;  This program 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.                                         

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;;;  This program 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.                                

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;;;  You should have received a copy of the GNU General Public License           

;;;  along with this program; if not, write to the Free Software                 

;;;  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

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(defpackage "RING-AND-ORDER"

  (:use :cl :ring :order)

  (:export "RING-AND-ORDER"

           "MAKE-RING-AND-ORDER"

           "RO-ORDER"

           "RO-RING"

           "RO-ORDER"))



(in-package :ring-and-order)



(defstruct (ring-and-order 

             (:conc-name ro-)

             (:constructor make-ring-and-order 

                           (&key 

                            (ring +ring-of-integers+)

                            (order #'lex>)

                            (primary-elimination-order  order)

                            (secondary-elimination-order order)

                            (elimination-order-factory

                             (make-elimination-order-factory primary-elimination-order

                                                             secondary-elimination-order)))))

  (ring  +ring-of-integers+ :type ring)

  (order nil :type function)

  (elimination-order-factory nil :type function))