(*
    ||M||  This file is part of HELM, an Hypertextual, Electronic        
    ||A||  Library of Mathematics, developed at the Computer Science     
    ||T||  Department, University of Bologna, Italy.                     
    ||I||                                                                
    ||T||  HELM is free software; you can redistribute it and/or         
    ||A||  modify it under the terms of the GNU General Public License   
    \   /  version 2 or (at your option) any later version.      
     \ /   This software is distributed as is, NO WARRANTY.     
      V_______________________________________________________________ *)

(* $Id: terms.ml 9836 2009-06-05 15:33:35Z denes $ *)

module type Blob =
  sig
    include Orderings.Blob

  end

module Clauses (B : Orderings.Blob) :
  sig

    val eq_clause : B.t Terms.clause -> B.t Terms.clause -> bool
    val compare_clause : B.t Terms.clause -> B.t Terms.clause -> int      
    val fresh_clause : int -> B.t Terms.clause -> B.t Terms.clause * int

    val mk_clause : int -> B.t Terms.foterm list -> B.t Terms.foterm list
                           -> B.t Terms.foterm -> B.t Terms.clause * int

    val mk_passive_clause : B.t Terms.clause -> int * B.t Terms.clause
 
    val mk_passive_goal : B.t Terms.clause -> int * B.t Terms.clause
 
    val compare_passive_clauses_weight :
           int * B.t Terms.clause -> int * B.t Terms.clause -> int
 
    val compare_passive_clauses_age :
           int * B.t Terms.clause -> int * B.t Terms.clause -> int

    val are_alpha_eq_cl :
           B.t Terms.clause -> B.t Terms.clause -> bool

end