/usr/include/gecode/set/branch/select-view.hpp is in libgecode-dev 3.7.1-3.
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:
* Guido Tack <tack@gecode.org>
* Christian Schulte <schulte@gecode.org>
*
* Contributing authors:
* Gabor Szokoli <szokoli@gecode.org>
*
* Copyright:
* Guido Tack, 2004
* Christian Schulte, 2004
* Gabor Szokoli, 2004
*
* Last modified:
* $Date: 2009-10-13 21:12:58 +0200 (Tue, 13 Oct 2009) $ by $Author: schulte $
* $Revision: 9897 $
*
* 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.
*
*/
namespace Gecode { namespace Set { namespace Branch {
forceinline
BySizeMin::BySizeMin(void) : size(0U) {}
forceinline
BySizeMin::BySizeMin(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), size(0U) {}
forceinline ViewSelStatus
BySizeMin::init(Space&, SetView x) {
size = x.unknownSize();
return (size == 1) ? VSS_BEST : VSS_BETTER;
}
forceinline ViewSelStatus
BySizeMin::select(Space&, SetView x) {
unsigned int us = x.unknownSize();
if (us < size) {
size = us;
return (size == 1) ? VSS_BEST : VSS_BETTER;
} else if (us > size) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
forceinline
BySizeMax::BySizeMax(void) : size(0U) {}
forceinline
BySizeMax::BySizeMax(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), size(0U) {}
forceinline ViewSelStatus
BySizeMax::init(Space&, SetView x) {
size = x.unknownSize();
return VSS_BETTER;
}
forceinline ViewSelStatus
BySizeMax::select(Space&, SetView x) {
unsigned int us = x.unknownSize();
if (us > size) {
size = us;
return VSS_BETTER;
} else if (us < size) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
forceinline
ByMinMin::ByMinMin(void) : min(0) {}
forceinline
ByMinMin::ByMinMin(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), min(0) {}
forceinline ViewSelStatus
ByMinMin::init(Space&, SetView x) {
UnknownRanges<SetView> u(x);
min = u.min();
return VSS_BETTER;
}
forceinline ViewSelStatus
ByMinMin::select(Space&, SetView x) {
UnknownRanges<SetView> u(x);
if (u.min() < min) {
min = u.min(); return VSS_BETTER;
} else if (u.min() > min) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
forceinline
ByMinMax::ByMinMax(void) : min(0) {}
forceinline
ByMinMax::ByMinMax(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), min(0) {}
forceinline ViewSelStatus
ByMinMax::init(Space&, SetView x) {
UnknownRanges<SetView> u(x);
min = u.min();
return VSS_BETTER;
}
forceinline ViewSelStatus
ByMinMax::select(Space&, SetView x) {
UnknownRanges<SetView> u(x);
if (u.min() > min) {
min = u.min(); return VSS_BETTER;
} else if (u.min() < min) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
forceinline
ByMaxMin::ByMaxMin(void) : max(0) {}
forceinline
ByMaxMin::ByMaxMin(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), max(0) {}
forceinline ViewSelStatus
ByMaxMin::init(Space&, SetView x) {
for (UnknownRanges<SetView> u(x); u(); ++u)
max = u.max();
return VSS_BETTER;
}
forceinline ViewSelStatus
ByMaxMin::select(Space&, SetView x) {
int um = 0;
for (UnknownRanges<SetView> u(x); u(); ++u)
um = u.max();
if (um < max) {
max = um; return VSS_BETTER;
} else if (um > max) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
forceinline
ByMaxMax::ByMaxMax(void) : max(0) {}
forceinline
ByMaxMax::ByMaxMax(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), max(0) {}
forceinline ViewSelStatus
ByMaxMax::init(Space&, SetView x) {
for (UnknownRanges<SetView> u(x); u(); ++u)
max = u.max();
return VSS_BETTER;
}
forceinline ViewSelStatus
ByMaxMax::select(Space&, SetView x) {
int um = 0;
for (UnknownRanges<SetView> u(x); u(); ++u)
um = u.max();
if (um > max) {
max = um; return VSS_BETTER;
} else if (um < max) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
// Select variable with smallest size/degree
forceinline
BySizeDegreeMin::BySizeDegreeMin(void) : sizedegree(0) {}
forceinline
BySizeDegreeMin::BySizeDegreeMin(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), sizedegree(0) {}
forceinline ViewSelStatus
BySizeDegreeMin::init(Space&, SetView x) {
UnknownRanges<SetView> u(x);
sizedegree =
static_cast<double>(Iter::Ranges::size(u))/
static_cast<double>(x.degree());
return VSS_BETTER;
}
forceinline ViewSelStatus
BySizeDegreeMin::select(Space&, SetView x) {
UnknownRanges<SetView> u(x);
double sd =
static_cast<double>(Iter::Ranges::size(u))/
static_cast<double>(x.degree());
if (sd < sizedegree) {
sizedegree = sd; return VSS_BETTER;
} else if (sd > sizedegree) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
// Select variable with largest size/degree
forceinline
BySizeDegreeMax::BySizeDegreeMax(void) : sizedegree(0) {}
forceinline
BySizeDegreeMax::BySizeDegreeMax(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), sizedegree(0) {}
forceinline ViewSelStatus
BySizeDegreeMax::init(Space&, SetView x) {
UnknownRanges<SetView> u(x);
sizedegree =
static_cast<double>(Iter::Ranges::size(u))/
static_cast<double>(x.degree());
return VSS_BETTER;
}
forceinline ViewSelStatus
BySizeDegreeMax::select(Space&, View x) {
UnknownRanges<SetView> u(x);
double sd =
static_cast<double>(Iter::Ranges::size(u))/
static_cast<double>(x.degree());
if (sd > sizedegree) {
sizedegree = sd; return VSS_BETTER;
} else if (sd < sizedegree) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
// Select variable with smallest size/afc
forceinline
BySizeAfcMin::BySizeAfcMin(void) : sizeafc(0) {}
forceinline
BySizeAfcMin::BySizeAfcMin(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), sizeafc(0) {}
forceinline ViewSelStatus
BySizeAfcMin::init(Space&, SetView x) {
UnknownRanges<SetView> u(x);
sizeafc = static_cast<double>(Iter::Ranges::size(u))/x.afc();
return VSS_BETTER;
}
forceinline ViewSelStatus
BySizeAfcMin::select(Space&, SetView x) {
UnknownRanges<SetView> u(x);
double sa = static_cast<double>(Iter::Ranges::size(u))/x.afc();
if (sa < sizeafc) {
sizeafc = sa; return VSS_BETTER;
} else if (sa > sizeafc) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
// Select variable with largest size/afc
forceinline
BySizeAfcMax::BySizeAfcMax(void) : sizeafc(0) {}
forceinline
BySizeAfcMax::BySizeAfcMax(Space& home, const VarBranchOptions& vbo)
: ViewSelBase<SetView>(home,vbo), sizeafc(0) {}
forceinline ViewSelStatus
BySizeAfcMax::init(Space&, SetView x) {
UnknownRanges<SetView> u(x);
sizeafc = static_cast<double>(Iter::Ranges::size(u))/x.afc();
return VSS_BETTER;
}
forceinline ViewSelStatus
BySizeAfcMax::select(Space&, View x) {
UnknownRanges<SetView> u(x);
double sa = static_cast<double>(Iter::Ranges::size(u))/x.afc();
if (sa > sizeafc) {
sizeafc = sa; return VSS_BETTER;
} else if (sa < sizeafc) {
return VSS_WORSE;
} else {
return VSS_TIE;
}
}
}}}
// STATISTICS: set-branch
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