/usr/include/gecode/int/unary/tree.hpp is in libgecode-dev 4.4.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2009
*
* Last modified:
* $Date: 2011-05-25 16:56:41 +0200 (Wed, 25 May 2011) $ by $Author: schulte $
* $Revision: 12022 $
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <algorithm>
namespace Gecode { namespace Int { namespace Unary {
/*
* Omega tree
*/
forceinline void
OmegaNode::init(const OmegaNode&, const OmegaNode&) {
p = 0; ect = -Int::Limits::infinity;
}
forceinline void
OmegaNode::update(const OmegaNode& l, const OmegaNode& r) {
p = l.p + r.p;
ect = std::max(plus(l.ect,r.p), r.ect);
}
template<class TaskView>
OmegaTree<TaskView>::OmegaTree(Region& r, const TaskViewArray<TaskView>& t)
: TaskTree<TaskView,OmegaNode>(r,t) {
for (int i=tasks.size(); i--; ) {
leaf(i).p = 0; leaf(i).ect = -Int::Limits::infinity;
}
init();
}
template<class TaskView>
forceinline void
OmegaTree<TaskView>::insert(int i) {
leaf(i).p = tasks[i].pmin();
leaf(i).ect = tasks[i].est()+tasks[i].pmin();
update(i);
}
template<class TaskView>
forceinline void
OmegaTree<TaskView>::remove(int i) {
leaf(i).p = 0; leaf(i).ect = -Int::Limits::infinity;
update(i);
}
template<class TaskView>
forceinline int
OmegaTree<TaskView>::ect(void) const {
return root().ect;
}
template<class TaskView>
forceinline int
OmegaTree<TaskView>::ect(int i) const {
// Check whether task i is in?
OmegaTree<TaskView>& o = const_cast<OmegaTree<TaskView>&>(*this);
if (o.leaf(i).ect != -Int::Limits::infinity) {
o.remove(i);
int ect = o.root().ect;
o.insert(i);
return ect;
} else {
return root().ect;
}
}
/*
* Ome lambda tree
*/
forceinline void
OmegaLambdaNode::init(const OmegaLambdaNode& l, const OmegaLambdaNode& r) {
OmegaNode::init(l,r);
lp = p; lect = ect; resEct = undef; resLp = undef;
}
forceinline void
OmegaLambdaNode::update(const OmegaLambdaNode& l, const OmegaLambdaNode& r) {
OmegaNode::update(l,r);
if (l.lp + r.p > l.p + r.lp) {
resLp = l.resLp;
lp = l.lp + r.p;
} else {
resLp = r.resLp;
lp = l.p + r.lp;
}
if ((r.lect >= plus(l.ect,r.lp)) && (r.lect >= plus(l.lect,r.p))) {
lect = r.lect; resEct = r.resEct;
} else if (plus(l.ect,r.lp) >= plus(l.lect,r.p)) {
assert(plus(l.ect,r.lp) > r.lect);
lect = plus(l.ect,r.lp); resEct = r.resLp;
} else {
assert((plus(l.lect,r.p) > r.lect) &&
(plus(l.lect,r.p) > plus(l.ect,r.lp)));
lect = plus(l.lect,r.p); resEct = l.resEct;
}
}
template<class TaskView>
OmegaLambdaTree<TaskView>::OmegaLambdaTree(Region& r,
const TaskViewArray<TaskView>& t,
bool inc)
: TaskTree<TaskView,OmegaLambdaNode>(r,t) {
if (inc) {
// Enter all tasks into tree (omega = all tasks, lambda = empty)
for (int i=tasks.size(); i--; ) {
leaf(i).p = leaf(i).lp = tasks[i].pmin();
leaf(i).ect = leaf(i).lect = tasks[i].est()+tasks[i].pmin();
leaf(i).resEct = OmegaLambdaNode::undef;
leaf(i).resLp = OmegaLambdaNode::undef;
}
update();
} else {
// Enter no tasks into tree (omega = empty, lambda = empty)
for (int i=tasks.size(); i--; ) {
leaf(i).p = leaf(i).lp = 0;
leaf(i).ect = leaf(i).lect = -Int::Limits::infinity;
leaf(i).resEct = OmegaLambdaNode::undef;
leaf(i).resLp = OmegaLambdaNode::undef;
}
init();
}
}
template<class TaskView>
forceinline void
OmegaLambdaTree<TaskView>::shift(int i) {
// That means that i is in omega
assert(leaf(i).ect > -Int::Limits::infinity);
leaf(i).p = 0;
leaf(i).ect = -Int::Limits::infinity;
leaf(i).resEct = i;
leaf(i).resLp = i;
update(i);
}
template<class TaskView>
forceinline void
OmegaLambdaTree<TaskView>::oinsert(int i) {
leaf(i).p = tasks[i].pmin();
leaf(i).ect = tasks[i].est()+tasks[i].pmin();
update(i);
}
template<class TaskView>
forceinline void
OmegaLambdaTree<TaskView>::linsert(int i) {
leaf(i).lp = tasks[i].pmin();
leaf(i).lect = tasks[i].est()+tasks[i].pmin();
leaf(i).resEct = i;
leaf(i).resLp = i;
update(i);
}
template<class TaskView>
forceinline void
OmegaLambdaTree<TaskView>::lremove(int i) {
leaf(i).lp = 0;
leaf(i).lect = -Int::Limits::infinity;
leaf(i).resEct = OmegaLambdaNode::undef;
leaf(i).resLp = OmegaLambdaNode::undef;
update(i);
}
template<class TaskView>
forceinline bool
OmegaLambdaTree<TaskView>::lempty(void) const {
return root().resEct < 0;
}
template<class TaskView>
forceinline int
OmegaLambdaTree<TaskView>::responsible(void) const {
return root().resEct;
}
template<class TaskView>
forceinline int
OmegaLambdaTree<TaskView>::ect(void) const {
return root().ect;
}
template<class TaskView>
forceinline int
OmegaLambdaTree<TaskView>::lect(void) const {
return root().lect;
}
}}}
// STATISTICS: int-prop
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