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    1/*  Part of SWI-Prolog
    2
    3    WWW:           http://www.swi-prolog.org
    4    Copyright (c)  2020, SWI-Prolog Solutions b.v.
    5    All rights reserved.
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    7    Redistribution and use in source and binary forms, with or without
    8    modification, are permitted provided that the following conditions
    9    are met:
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   11    1. Redistributions of source code must retain the above copyright
   12       notice, this list of conditions and the following disclaimer.
   13
   14    2. Redistributions in binary form must reproduce the above copyright
   15       notice, this list of conditions and the following disclaimer in
   16       the documentation and/or other materials provided with the
   17       distribution.
   18
   19    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   20    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   21    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   22    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   23    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   24    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   25    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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   29    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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   31*/
   32
   33:- module(sicstus4_terms,
   34	  [ term_variables_set/2,	% @Term, -Variables
   35	    subsumeschk/2,		% +Generic, @Specific
   36	    term_order/3		% @X, @Y, -R
   37	  ]).   38:- reexport('../sicstus/terms').   39:- reexport('../../occurs',
   40	    [ contains_term/2,
   41	      free_of_term/2,
   42	      occurrences_of_term/3,
   43	      contains_var/2,
   44	      free_of_var/2,
   45	      occurrences_of_var/3,
   46	      sub_term/2
   47	    ]).   48
   49:- multifile sicstus4:rename_module/2.   50
   51sicstus4:rename_module(terms, sicstus4_terms).

SICStus 4-compatible library(terms).

See also
- https://sicstus.sics.se/sicstus/docs/4.6.0/html/sicstus.html/lib_002dterms.html */
To be done
- This library is incomplete. As of SICStus 4.6.0, the following predicates are missing:
 term_variables_set(@Term, -Variables) is det
Same as term_variables_bag/2, but Variables is an ordered set.
   71term_variables_set(Term, Variables) :-
   72	term_variables(Term, VariablesBag),
   73	sort(VariablesBag, Variables).
 subsumeschk(+Generic, @Specific) is semidet
SICStus 4 name of subsumes_chk/2.
deprecated
- Replace by subsumes_term/2.
   81subsumeschk(Generic, Specific) :- subsumes_chk(Generic, Specific).
 term_order(@X, @Y, -R) is det
Same as compare/3, except for the order of arguments.
deprecated
- Use the standard compare/3 instead.
   89term_order(X, Y, R) :- compare(R, X, Y)