488 lines
20 KiB
C
488 lines
20 KiB
C
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
%
|
|
% $Date: 2010-06-30 17:05:24 +0200 (Wed, 30 Jun 2010) $
|
|
% $Revision: 1 $
|
|
%
|
|
% This file is part of YAP & ProbLog
|
|
% http://www.dcc.fc.up.pt/~vsc/Yap/index.html
|
|
% http://dtai.cs.kuleuven.be/problog
|
|
%
|
|
% ProbLog was developed at Katholieke Universiteit Leuven &
|
|
% University of Porto
|
|
%
|
|
% Copyright 2010 Katholieke Universiteit Leuven & University of Porto
|
|
%
|
|
% Main authors of this file: Mantadelis Theofrastos, Ricardo Rocha
|
|
%
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
%
|
|
% Artistic License 2.0
|
|
%
|
|
% Copyright (c) 2000-2006, The Perl Foundation.
|
|
%
|
|
% Everyone is permitted to copy and distribute verbatim copies of this
|
|
% license document, but changing it is not allowed. Preamble
|
|
%
|
|
% This license establishes the terms under which a given free software
|
|
% Package may be copied, modified, distributed, and/or
|
|
% redistributed. The intent is that the Copyright Holder maintains some
|
|
% artistic control over the development of that Package while still
|
|
% keeping the Package available as open source and free software.
|
|
%
|
|
% You are always permitted to make arrangements wholly outside of this
|
|
% license directly with the Copyright Holder of a given Package. If the
|
|
% terms of this license do not permit the full use that you propose to
|
|
% make of the Package, you should contact the Copyright Holder and seek
|
|
% a different licensing arrangement. Definitions
|
|
%
|
|
% "Copyright Holder" means the individual(s) or organization(s) named in
|
|
% the copyright notice for the entire Package.
|
|
%
|
|
% "Contributor" means any party that has contributed code or other
|
|
% material to the Package, in accordance with the Copyright Holder's
|
|
% procedures.
|
|
%
|
|
% "You" and "your" means any person who would like to copy, distribute,
|
|
% or modify the Package.
|
|
%
|
|
% "Package" means the collection of files distributed by the Copyright
|
|
% Holder, and derivatives of that collection and/or of those files. A
|
|
% given Package may consist of either the Standard Version, or a
|
|
% Modified Version.
|
|
%
|
|
% "Distribute" means providing a copy of the Package or making it
|
|
% accessible to anyone else, or in the case of a company or
|
|
% organization, to others outside of your company or organization.
|
|
%
|
|
% "Distributor Fee" means any fee that you charge for Distributing this
|
|
% Package or providing support for this Package to another party. It
|
|
% does not mean licensing fees.
|
|
%
|
|
% "Standard Version" refers to the Package if it has not been modified,
|
|
% or has been modified only in ways explicitly requested by the
|
|
% Copyright Holder.
|
|
%
|
|
% "Modified Version" means the Package, if it has been changed, and such
|
|
% changes were not explicitly requested by the Copyright Holder.
|
|
%
|
|
% "Original License" means this Artistic License as Distributed with the
|
|
% Standard Version of the Package, in its current version or as it may
|
|
% be modified by The Perl Foundation in the future.
|
|
%
|
|
% "Source" form means the source code, documentation source, and
|
|
% configuration files for the Package.
|
|
%
|
|
% "Compiled" form means the compiled bytecode, object code, binary, or
|
|
% any other form resulting from mechanical transformation or translation
|
|
% of the Source form.
|
|
%
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
%
|
|
% Permission for Use and Modification Without Distribution
|
|
%
|
|
% (1) You are permitted to use the Standard Version and create and use
|
|
% Modified Versions for any purpose without restriction, provided that
|
|
% you do not Distribute the Modified Version.
|
|
%
|
|
% Permissions for Redistribution of the Standard Version
|
|
%
|
|
% (2) You may Distribute verbatim copies of the Source form of the
|
|
% Standard Version of this Package in any medium without restriction,
|
|
% either gratis or for a Distributor Fee, provided that you duplicate
|
|
% all of the original copyright notices and associated disclaimers. At
|
|
% your discretion, such verbatim copies may or may not include a
|
|
% Compiled form of the Package.
|
|
%
|
|
% (3) You may apply any bug fixes, portability changes, and other
|
|
% modifications made available from the Copyright Holder. The resulting
|
|
% Package will still be considered the Standard Version, and as such
|
|
% will be subject to the Original License.
|
|
%
|
|
% Distribution of Modified Versions of the Package as Source
|
|
%
|
|
% (4) You may Distribute your Modified Version as Source (either gratis
|
|
% or for a Distributor Fee, and with or without a Compiled form of the
|
|
% Modified Version) provided that you clearly document how it differs
|
|
% from the Standard Version, including, but not limited to, documenting
|
|
% any non-standard features, executables, or modules, and provided that
|
|
% you do at least ONE of the following:
|
|
%
|
|
% (a) make the Modified Version available to the Copyright Holder of the
|
|
% Standard Version, under the Original License, so that the Copyright
|
|
% Holder may include your modifications in the Standard Version. (b)
|
|
% ensure that installation of your Modified Version does not prevent the
|
|
% user installing or running the Standard Version. In addition, the
|
|
% modified Version must bear a name that is different from the name of
|
|
% the Standard Version. (c) allow anyone who receives a copy of the
|
|
% Modified Version to make the Source form of the Modified Version
|
|
% available to others under (i) the Original License or (ii) a license
|
|
% that permits the licensee to freely copy, modify and redistribute the
|
|
% Modified Version using the same licensing terms that apply to the copy
|
|
% that the licensee received, and requires that the Source form of the
|
|
% Modified Version, and of any works derived from it, be made freely
|
|
% available in that license fees are prohibited but Distributor Fees are
|
|
% allowed.
|
|
%
|
|
% Distribution of Compiled Forms of the Standard Version or
|
|
% Modified Versions without the Source
|
|
%
|
|
% (5) You may Distribute Compiled forms of the Standard Version without
|
|
% the Source, provided that you include complete instructions on how to
|
|
% get the Source of the Standard Version. Such instructions must be
|
|
% valid at the time of your distribution. If these instructions, at any
|
|
% time while you are carrying out such distribution, become invalid, you
|
|
% must provide new instructions on demand or cease further
|
|
% distribution. If you provide valid instructions or cease distribution
|
|
% within thirty days after you become aware that the instructions are
|
|
% invalid, then you do not forfeit any of your rights under this
|
|
% license.
|
|
%
|
|
% (6) You may Distribute a Modified Version in Compiled form without the
|
|
% Source, provided that you comply with Section 4 with respect to the
|
|
% Source of the Modified Version.
|
|
%
|
|
% Aggregating or Linking the Package
|
|
%
|
|
% (7) You may aggregate the Package (either the Standard Version or
|
|
% Modified Version) with other packages and Distribute the resulting
|
|
% aggregation provided that you do not charge a licensing fee for the
|
|
% Package. Distributor Fees are permitted, and licensing fees for other
|
|
% components in the aggregation are permitted. The terms of this license
|
|
% apply to the use and Distribution of the Standard or Modified Versions
|
|
% as included in the aggregation.
|
|
%
|
|
% (8) You are permitted to link Modified and Standard Versions with
|
|
% other works, to embed the Package in a larger work of your own, or to
|
|
% build stand-alone binary or bytecode versions of applications that
|
|
% include the Package, and Distribute the result without restriction,
|
|
% provided the result does not expose a direct interface to the Package.
|
|
%
|
|
% Items That are Not Considered Part of a Modified Version
|
|
%
|
|
% (9) Works (including, but not limited to, modules and scripts) that
|
|
% merely extend or make use of the Package, do not, by themselves, cause
|
|
% the Package to be a Modified Version. In addition, such works are not
|
|
% considered parts of the Package itself, and are not subject to the
|
|
% terms of this license.
|
|
%
|
|
% General Provisions
|
|
%
|
|
% (10) Any use, modification, and distribution of the Standard or
|
|
% Modified Versions is governed by this Artistic License. By using,
|
|
% modifying or distributing the Package, you accept this license. Do not
|
|
% use, modify, or distribute the Package, if you do not accept this
|
|
% license.
|
|
%
|
|
% (11) If your Modified Version has been derived from a Modified Version
|
|
% made by someone other than you, you are nevertheless required to
|
|
% ensure that your Modified Version complies with the requirements of
|
|
% this license.
|
|
%
|
|
% (12) This license does not grant you the right to use any trademark,
|
|
% service mark, tradename, or logo of the Copyright Holder.
|
|
%
|
|
% (13) This license includes the non-exclusive, worldwide,
|
|
% free-of-charge patent license to make, have made, use, offer to sell,
|
|
% sell, import and otherwise transfer the Package with respect to any
|
|
% patent claims licensable by the Copyright Holder that are necessarily
|
|
% infringed by the Package. If you institute patent litigation
|
|
% (including a cross-claim or counterclaim) against any party alleging
|
|
% that the Package constitutes direct or contributory patent
|
|
% infringement, then this Artistic License to you shall terminate on the
|
|
% date that such litigation is filed.
|
|
%
|
|
% (14) Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT
|
|
% HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED
|
|
% WARRANTIES. THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
|
|
% PARTICULAR PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT
|
|
% PERMITTED BY YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT
|
|
% HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
% INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE
|
|
% OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
%
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
/* -------------------------- */
|
|
/* Local Procedures */
|
|
/* -------------------------- */
|
|
|
|
static void simplification_reduction(TrEntry trie);
|
|
static TrNode depth_reduction(TrEntry trie, TrNode depth_node, YAP_Int opt_level);
|
|
static TrNode breadth_reduction(TrEntry trie, TrNode breadth_node, YAP_Int opt_level);
|
|
static inline int compare_label_nodes(TrData data1, TrData data2);
|
|
static inline void move_after(TrData data_source, TrData data_dest);
|
|
static inline void move_last_data_after(TrData moveto_data);
|
|
static inline void set_depth_breadth_reduction_current_data(TrData data);
|
|
|
|
|
|
/* -------------------------- */
|
|
/* Local Variables */
|
|
/* -------------------------- */
|
|
|
|
static TrData CURRENT_DEPTH_BREADTH_DATA;
|
|
|
|
|
|
/* -------------------------- */
|
|
/* API */
|
|
/* -------------------------- */
|
|
|
|
|
|
YAP_Term trie_depth_breadth(TrEntry trie, TrEntry db_trie, YAP_Int opt_level, YAP_Int start_counter, YAP_Int *end_counter) {
|
|
TrNode depth_node, breadth_node, nested_trie;
|
|
TrEntry otrie = CURRENT_TRIE;
|
|
core_set_label_counter(start_counter);
|
|
CURRENT_TRIE = db_trie;
|
|
core_set_trie_db_return_term(YAP_MkAtomTerm(YAP_LookupAtom("false")));
|
|
core_initialize_depth_breadth_trie(TrEntry_trie(db_trie), &depth_node, &breadth_node);
|
|
set_depth_breadth_reduction_current_data(NULL);
|
|
/* We only need to simplify the trie once! */
|
|
/* This can be a 10% overhead for sld cases :-( */
|
|
// printf("simplification\n"); trie_print(trie);
|
|
if (TrNode_child(TrEntry_trie(trie)))
|
|
simplification_reduction(trie);
|
|
while (TrNode_child(TrEntry_trie(trie))) {
|
|
// printf("depth\n"); trie_print(trie);
|
|
nested_trie = depth_reduction(trie, depth_node, opt_level);
|
|
if (nested_trie) {
|
|
set_depth_breadth_reduction_current_data(get_data_from_trie_node(nested_trie));
|
|
core_finalize_depth_breadth_trie(depth_node, breadth_node);
|
|
*end_counter = core_get_label_counter();
|
|
CURRENT_TRIE = otrie;
|
|
return YAP_MkApplTerm((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(nested_trie))), 1, &TrNode_entry(nested_trie));
|
|
}
|
|
// printf("breadth\n"); trie_print(trie);
|
|
nested_trie = breadth_reduction(trie, breadth_node, opt_level);
|
|
if (nested_trie) {
|
|
set_depth_breadth_reduction_current_data(get_data_from_trie_node(nested_trie));
|
|
core_finalize_depth_breadth_trie(depth_node, breadth_node);
|
|
*end_counter = core_get_label_counter();
|
|
CURRENT_TRIE = otrie;
|
|
return YAP_MkApplTerm((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(nested_trie))), 1, &TrNode_entry(nested_trie));
|
|
}
|
|
}
|
|
core_finalize_depth_breadth_trie(depth_node, breadth_node);
|
|
*end_counter = core_get_label_counter();
|
|
CURRENT_TRIE = otrie;
|
|
return core_get_trie_db_return_term();
|
|
}
|
|
|
|
|
|
|
|
YAP_Int trie_get_db_opt_level_count(YAP_Int opt_level) {
|
|
return core_db_trie_get_optimization_level_count(opt_level);
|
|
}
|
|
|
|
|
|
|
|
TrData trie_get_depth_breadth_reduction_current_data(void) {
|
|
return CURRENT_DEPTH_BREADTH_DATA;
|
|
}
|
|
|
|
|
|
|
|
void trie_replace_nested_trie(TrEntry trie, YAP_Int nested_trie_id, YAP_Term new_term) {
|
|
TrEntry otrie = CURRENT_TRIE;
|
|
CURRENT_TRIE = trie;
|
|
core_depth_breadth_trie_replace_nested_trie(TrNode_child(TrEntry_trie(trie)), nested_trie_id, new_term, &trie_data_construct, &trie_data_destruct);
|
|
CURRENT_TRIE = otrie;
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
YAP_Int trie_get_db_opt_min_prefix(void) {
|
|
return core_get_trie_db_opt_min_prefix();
|
|
}
|
|
|
|
|
|
|
|
void trie_set_db_opt_min_prefix(YAP_Int min_prefix) {
|
|
core_set_trie_db_opt_min_prefix(min_prefix);
|
|
return;
|
|
}
|
|
|
|
|
|
/* -------------------------- */
|
|
/* Local Procedures */
|
|
/* -------------------------- */
|
|
|
|
|
|
static inline
|
|
void set_depth_breadth_reduction_current_data(TrData data) {
|
|
CURRENT_DEPTH_BREADTH_DATA = data;
|
|
return;
|
|
}
|
|
|
|
|
|
static
|
|
void simplification_reduction(TrEntry trie) {
|
|
TrNode node;
|
|
TrData stop_data, new_data, data = NULL;
|
|
stop_data = TrData_previous(TrEntry_first_data(trie));
|
|
data = TrEntry_traverse_data(trie) = TrEntry_last_data(trie);
|
|
while (data && (data != stop_data) && (TrData_trie(data))) {
|
|
node = core_simplification_reduction(TRIE_ENGINE, TrData_leaf(data), &trie_data_destruct);
|
|
if (node) {
|
|
new_trie_data(new_data, trie, node);
|
|
PUT_DATA_IN_LEAF_TRIE_NODE(node, new_data);
|
|
data = NULL;
|
|
}
|
|
if (data && TrEntry_traverse_data(trie) && TrEntry_traverse_data(trie) != stop_data && !TrData_trie(data)) {
|
|
data = TrData_previous(data);
|
|
TrEntry_traverse_data(trie) = data;
|
|
} else if (data && TrEntry_traverse_data(trie) && TrEntry_traverse_data(trie) != stop_data && data == TrEntry_traverse_data(trie)) {
|
|
data = TrData_previous(data);
|
|
TrEntry_traverse_data(trie) = data;
|
|
} else
|
|
data = TrEntry_traverse_data(trie);
|
|
}
|
|
}
|
|
|
|
|
|
static
|
|
TrNode depth_reduction(TrEntry trie, TrNode depth_node, YAP_Int opt_level) {
|
|
TrNode node;
|
|
TrData stop_data, new_data, data = NULL;
|
|
|
|
stop_data = TrData_previous(TrEntry_first_data(trie));
|
|
data = TrEntry_traverse_data(trie) = TrEntry_last_data(trie);
|
|
while (data && (data != stop_data) && (TrData_trie(data))) {
|
|
node = core_depth_reduction(TRIE_ENGINE, TrData_leaf(data), depth_node, opt_level, &trie_data_construct, &trie_data_destruct, &trie_data_copy, &trie_data_order_correction);
|
|
if (node && IS_FUNCTOR_NODE(TrNode_parent(node)) && (strcmp(YAP_AtomName(YAP_NameOfFunctor((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(node))))), NESTED_TRIE_TERM) == 0)) {
|
|
//nested trie stop procedure return nested trie node
|
|
return node;
|
|
}
|
|
if (node) {
|
|
new_trie_data(new_data, trie, node);
|
|
PUT_DATA_IN_LEAF_TRIE_NODE(node, new_data);
|
|
data = NULL;
|
|
}
|
|
if (data && TrEntry_traverse_data(trie) && TrEntry_traverse_data(trie) != stop_data && !TrData_trie(data)) {
|
|
data = TrData_previous(data);
|
|
TrEntry_traverse_data(trie) = data;
|
|
} else if (data && TrEntry_traverse_data(trie) && TrEntry_traverse_data(trie) != stop_data && data == TrEntry_traverse_data(trie)) {
|
|
data = TrData_previous(data);
|
|
TrEntry_traverse_data(trie) = data;
|
|
} else
|
|
data = TrEntry_traverse_data(trie);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static
|
|
TrNode breadth_reduction(TrEntry trie, TrNode breadth_node, YAP_Int opt_level) {
|
|
TrNode node;
|
|
TrData stop_data, new_data, data = NULL;
|
|
|
|
stop_data = TrData_previous(TrEntry_first_data(trie));
|
|
data = TrEntry_traverse_data(trie) = TrEntry_last_data(trie);
|
|
while (data && (data != stop_data) && (TrData_trie(data))) {
|
|
node = core_breadth_reduction(TRIE_ENGINE, TrData_leaf(data), breadth_node, opt_level, &trie_data_construct, &trie_data_destruct, &trie_data_copy, &trie_data_order_correction);
|
|
if (node && IS_FUNCTOR_NODE(TrNode_parent(node)) && (strcmp(YAP_AtomName(YAP_NameOfFunctor((YAP_Functor)(~ApplTag & TrNode_entry(TrNode_parent(node))))), NESTED_TRIE_TERM) == 0)) {
|
|
//nested trie stop procedure return nested trie node
|
|
return node;
|
|
}
|
|
if (node) {
|
|
new_trie_data(new_data, trie, node);
|
|
PUT_DATA_IN_LEAF_TRIE_NODE(node, new_data);
|
|
data = NULL;
|
|
}
|
|
if (data && TrEntry_traverse_data(trie) && TrEntry_traverse_data(trie) != stop_data && !TrData_trie(data)) {
|
|
data = TrData_previous(data);
|
|
TrEntry_traverse_data(trie) = data;
|
|
} else if (data && TrEntry_traverse_data(trie) && TrEntry_traverse_data(trie) != stop_data && data == TrEntry_traverse_data(trie)) {
|
|
data = TrData_previous(data);
|
|
TrEntry_traverse_data(trie) = data;
|
|
} else
|
|
data = TrEntry_traverse_data(trie);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static inline
|
|
void move_last_data_after(TrData moveto_data) {
|
|
TrEntry trie = CURRENT_TRIE;
|
|
TrData last_data = TrEntry_last_data(trie);
|
|
TrEntry_last_data(trie) = TrData_previous(last_data);
|
|
TrData_next(TrData_previous(last_data)) = TrData_next(last_data);
|
|
if (moveto_data == TrData_previous(TrEntry_first_data(trie))) {
|
|
TrData_next(last_data) = TrEntry_first_data(trie);
|
|
TrEntry_first_data(trie) = last_data;
|
|
} else {
|
|
TrData_next(last_data) = TrData_next(moveto_data);
|
|
TrData_next(moveto_data) = last_data;
|
|
}
|
|
TrData_previous(last_data) = moveto_data;
|
|
TrData_previous(TrData_next(last_data)) = last_data;
|
|
return;
|
|
}
|
|
|
|
|
|
static inline
|
|
void move_after(TrData data_source, TrData data_dest) {
|
|
TrEntry trie = CURRENT_TRIE;
|
|
if (data_source == TrEntry_first_data(trie))
|
|
TrEntry_first_data(trie) = TrData_next(data_source);
|
|
else
|
|
TrData_next(TrData_previous(data_source)) = TrData_next(data_source);
|
|
if (data_source == TrEntry_last_data(trie))
|
|
TrEntry_last_data(trie) = TrData_previous(data_source);
|
|
else
|
|
TrData_previous(TrData_next(data_source)) = TrData_previous(data_source);
|
|
|
|
if (data_dest == TrData_previous(TrEntry_first_data(trie))) {
|
|
TrData_next(data_source) = TrEntry_first_data(trie);
|
|
TrData_previous(TrEntry_first_data(trie)) = data_source;
|
|
TrEntry_first_data(trie) = data_source;
|
|
} else {
|
|
TrData_next(data_source) = TrData_next(data_dest);
|
|
if (data_dest == TrEntry_last_data(trie))
|
|
TrEntry_last_data(trie) = data_source;
|
|
else
|
|
TrData_previous(TrData_next(data_dest)) = data_source;
|
|
TrData_next(data_dest) = data_source;
|
|
}
|
|
TrData_previous(data_source) = data_dest;
|
|
return;
|
|
}
|
|
|
|
|
|
void trie_data_order_correction(void) {
|
|
TrEntry trie = CURRENT_TRIE;
|
|
TrData inserted_data = TrEntry_last_data(trie);
|
|
TrData moved_data = TrData_previous(inserted_data);
|
|
TrData moveto_data = TrData_previous(moved_data);
|
|
|
|
while((moveto_data != TrData_previous(TrEntry_first_data(trie))) && (compare_label_nodes(moveto_data, inserted_data) == 1)) {
|
|
if (compare_label_nodes(moveto_data, moved_data) == 2)
|
|
moved_data = moveto_data;
|
|
moveto_data = TrData_previous(moveto_data);
|
|
}
|
|
move_last_data_after(moveto_data);
|
|
|
|
do {
|
|
moveto_data = TrData_next(inserted_data);
|
|
while(compare_label_nodes(moveto_data, moved_data) == 2)
|
|
moveto_data = TrData_next(moveto_data);
|
|
inserted_data = moved_data;
|
|
moved_data = TrData_next(moved_data);
|
|
if (moved_data != moveto_data)
|
|
move_after(inserted_data, TrData_previous(moveto_data));
|
|
} while(moved_data);
|
|
return;
|
|
}
|
|
|
|
|
|
static inline
|
|
int compare_label_nodes(TrData data1, TrData data2) {
|
|
YAP_Term t1 = TrNode_entry(TrData_leaf(data1)), t2 = TrNode_entry(TrData_leaf(data2));
|
|
YAP_Int i1 = atol(YAP_AtomName(YAP_AtomOfTerm(t1)) + 1), i2 = atol(YAP_AtomName(YAP_AtomOfTerm(t2)) + 1);
|
|
if (i1 == i2) return 0;
|
|
if (i1 > i2) return 1;
|
|
return 2;
|
|
}
|