/usr/include/gecode/set/view/singleton.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:
* Guido Tack <tack@gecode.org>
*
* Contributing authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Guido Tack, 2004
* Christian Schulte, 2004
*
* Last modified:
* $Date: 2011-08-19 16:47:28 +0200 (Fri, 19 Aug 2011) $ by $Author: tack $
* $Revision: 12318 $
*
* 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 {
forceinline
SingletonView::SingletonView(void) {}
forceinline
SingletonView::SingletonView(Gecode::Int::IntView& y)
: DerivedView<Gecode::Int::IntView>(y) {}
forceinline
SingletonView::SingletonView(const Gecode::IntVar& y)
: DerivedView<Gecode::Int::IntView>(y) {}
forceinline PropCond
SingletonView::pc_settoint(PropCond pc) {
switch(pc) {
case PC_SET_VAL:
case PC_SET_CGLB:
case PC_SET_CARD:
return Gecode::Int::PC_INT_VAL;
default:
return Gecode::Int::PC_INT_DOM;
}
}
forceinline ModEvent
SingletonView::me_inttoset(ModEvent me) {
switch(me) {
case Gecode::Int::ME_INT_FAILED:
return ME_SET_FAILED;
case Gecode::Int::ME_INT_NONE:
return ME_SET_NONE;
case Gecode::Int::ME_INT_VAL:
return ME_SET_VAL;
case Gecode::Int::ME_INT_DOM:
return ME_SET_LUB;
default:
return ME_SET_LUB;
}
}
forceinline ModEvent
SingletonView::me_settoint(ModEvent me) {
switch(me) {
case ME_SET_FAILED:
return Gecode::Int::ME_INT_FAILED;
case ME_SET_NONE:
return Gecode::Int::ME_INT_NONE;
case ME_SET_VAL:
return Gecode::Int::ME_INT_VAL;
default:
return Gecode::Int::ME_INT_DOM;
}
}
forceinline unsigned int
SingletonView::glbSize(void) const {
return x.assigned() ? 1U : 0U;
}
forceinline unsigned int
SingletonView::lubSize(void) const { return x.size(); }
forceinline unsigned int
SingletonView::unknownSize(void) const {
return lubSize() - glbSize();
}
forceinline bool
SingletonView::contains(int n) const { return x.assigned() ?
(x.val()==n) : false; }
forceinline bool
SingletonView::notContains(int n) const { return !x.in(n); }
forceinline unsigned int
SingletonView::cardMin() const { return 1; }
forceinline unsigned int
SingletonView::cardMax() const { return 1; }
forceinline int
SingletonView::lubMin() const { return x.min(); }
forceinline int
SingletonView::lubMax() const { return x.max(); }
forceinline int
SingletonView::glbMin() const { return x.assigned() ?
x.val() : BndSet::MIN_OF_EMPTY; }
forceinline int
SingletonView::glbMax() const { return x.assigned() ?
x.val() : BndSet::MAX_OF_EMPTY; }
forceinline ModEvent
SingletonView::cardMin(Space&, unsigned int c) {
return c<=1 ? ME_SET_NONE : ME_SET_FAILED;
}
forceinline ModEvent
SingletonView::cardMax(Space&, unsigned int c) {
return c<1 ? ME_SET_FAILED : ME_SET_NONE;
}
forceinline ModEvent
SingletonView::include(Space& home,int c) {
return me_inttoset(x.eq(home,c));
}
forceinline ModEvent
SingletonView::intersect(Space& home,int c) {
return me_inttoset(x.eq(home,c));
}
forceinline ModEvent
SingletonView::intersect(Space& home,int i, int j) {
ModEvent me1 = me_inttoset(x.gq(home,i));
ModEvent me2 = me_inttoset(x.lq(home,j));
if (me_failed(me1) || me_failed(me2))
return ME_SET_FAILED;
switch (me1) {
case ME_SET_NONE:
case ME_SET_LUB:
return me2;
case ME_SET_VAL:
return ME_SET_VAL;
default:
GECODE_NEVER;
return ME_SET_VAL;
}
}
forceinline ModEvent
SingletonView::exclude(Space& home,int c) {
return me_inttoset(x.nq(home,c));
}
forceinline ModEvent
SingletonView::include(Space& home, int j, int k) {
return j==k ? me_inttoset(x.eq(home,j)) : ME_SET_FAILED ;
}
forceinline ModEvent
SingletonView::exclude(Space& home, int j, int k) {
ModEvent me1 = me_inttoset(x.gr(home,j));
ModEvent me2 = me_inttoset(x.le(home,k));
if (me_failed(me1) || me_failed(me2))
return ME_SET_FAILED;
switch (me1) {
case ME_SET_NONE:
case ME_SET_LUB:
return me2;
case ME_SET_VAL:
return ME_SET_VAL;
default:
GECODE_NEVER;
return ME_SET_VAL;
}
}
template<class I> ModEvent
SingletonView::excludeI(Space& home, I& iter) {
return me_inttoset(x.minus_r(home,iter));
}
template<class I> ModEvent
SingletonView::includeI(Space& home, I& iter) {
if (!iter())
return ME_SET_NONE;
if (iter.min()!=iter.max())
return ME_SET_FAILED;
int val = iter.min();
++iter;
if ( iter() )
return ME_SET_FAILED;
return me_inttoset(x.eq(home, val));
}
template<class I> ModEvent
SingletonView::intersectI(Space& home, I& iter) {
return me_inttoset(x.inter_r(home,iter));
}
forceinline void
SingletonView::subscribe(Space& home, Propagator& p, PropCond pc,
bool schedule) {
x.subscribe(home,p,pc_settoint(pc),schedule);
}
forceinline void
SingletonView::cancel(Space& home, Propagator& p, PropCond pc) {
x.cancel(home,p,pc_settoint(pc));
}
forceinline void
SingletonView::subscribe(Space& home, Advisor& a) {
x.subscribe(home,a);
}
forceinline void
SingletonView::cancel(Space& home, Advisor& a) {
x.cancel(home,a);
}
forceinline void
SingletonView::schedule(Space& home, Propagator& p, ModEvent me) {
return Gecode::Int::IntView::schedule(home,p,me_settoint(me));
}
forceinline ModEvent
SingletonView::me(const ModEventDelta& med) {
return me_inttoset(Int::IntView::me(med));
}
forceinline ModEventDelta
SingletonView::med(ModEvent me) {
return SetView::med(me_settoint(me));
}
/*
* Delta information for advisors
*
* For SingletonViews, a glb change means that the view is assigned.
* Thus, the delta for the glb is always equal to the delta for the lub.
*
*/
forceinline ModEvent
SingletonView::modevent(const Delta& d) {
return me_inttoset(Int::IntView::modevent(d));
}
forceinline int
SingletonView::glbMin(const Delta& d) const { return x.min(d); }
forceinline int
SingletonView::glbMax(const Delta& d) const { return x.max(d); }
forceinline bool
SingletonView::glbAny(const Delta& d) const { return x.any(d); }
forceinline int
SingletonView::lubMin(const Delta& d) const { return x.min(d); }
forceinline int
SingletonView::lubMax(const Delta& d) const { return x.max(d); }
forceinline bool
SingletonView::lubAny(const Delta& d) const { return x.any(d); }
/*
* Iterators
*
*/
/**
* \brief %Range iterator for least upper bound of singleton set view
* \ingroup TaskActorSetView
*/
template<>
class LubRanges<SingletonView> : public Gecode::Int::IntVarImpFwd {
public:
/// \name Constructors and initialization
//@{
/// Default constructor
LubRanges(void);
/// Initialize with ranges for view \a x
LubRanges(const SingletonView& x);
/// Initialize with ranges for view \a x
void init(const SingletonView& x);
//@}
};
forceinline
LubRanges<SingletonView>::LubRanges(void) {}
forceinline
LubRanges<SingletonView>::LubRanges(const SingletonView& s) :
Gecode::Int::IntVarImpFwd(s.base().varimp()) {}
forceinline void
LubRanges<SingletonView>::init(const SingletonView& s) {
Gecode::Int::IntVarImpFwd::init(s.base().varimp());
}
/**
* \brief %Range iterator for greatest lower bound of singleton set view
* \ingroup TaskActorSetView
*/
template<>
class GlbRanges<SingletonView> {
private:
int val;
bool flag;
public:
/// \name Constructors and initialization
//@{
/// Default constructor
GlbRanges(void);
/// Initialize with ranges for view \a x
GlbRanges(const SingletonView& x);
/// Initialize with ranges for view \a x
void init(const SingletonView& x);
/// \name Iteration control
//@{
/// Test whether iterator is still at a range or done
bool operator ()(void) const;
/// Move iterator to next range (if possible)
void operator ++(void);
//@}
/// \name Range access
//@{
/// Return smallest value of range
int min(void) const;
/// Return largest value of range
int max(void) const;
/// Return width of ranges (distance between minimum and maximum)
unsigned int width(void) const;
//@}
};
forceinline
GlbRanges<SingletonView>::GlbRanges(void) {}
forceinline void
GlbRanges<SingletonView>::init(const SingletonView& s) {
if (s.base().assigned()) {
val = s.base().val();
flag = true;
} else {
val = 0;
flag = false;
}
}
forceinline
GlbRanges<SingletonView>::GlbRanges(const SingletonView& s) {
init(s);
}
forceinline bool
GlbRanges<SingletonView>::operator ()(void) const { return flag; }
forceinline void
GlbRanges<SingletonView>::operator ++(void) { flag=false; }
forceinline int
GlbRanges<SingletonView>::min(void) const { return val; }
forceinline int
GlbRanges<SingletonView>::max(void) const { return val; }
forceinline unsigned int
GlbRanges<SingletonView>::width(void) const { return 1; }
}}
// STATISTICS: set-var
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