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gecode
int
sequence
violations.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2009
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <climits>
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#include <cmath>
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namespace
Gecode
{
namespace
Int {
namespace
Sequence {
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class
Violations
:
public
Support::BitSetBase
{
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protected
:
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mutable
unsigned
int
fst
;
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public
:
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Violations
(
void
);
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void
init
(
Space
& home,
unsigned
int
n
);
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void
update
(
Space
& home,
Violations
&
v
);
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bool
empty
(
void
)
const
;
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void
add
(
unsigned
int
i
);
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unsigned
int
get
(
void
);
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};
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forceinline
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Violations::Violations
(
void
) : fst(0) {}
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forceinline
void
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Violations::init
(
Space
& home,
unsigned
int
n
) {
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Support::BitSetBase::init
(home,
n
);
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fst
=
size
();
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}
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forceinline
bool
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Violations::empty
(
void
)
const
{
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fst
=
next
(
fst
);
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return
fst
>=
size
();
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}
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forceinline
void
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Violations::update
(
Space
& home,
Violations
&
v
) {
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assert(
v
.empty());
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init
(home,
v
.size());
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}
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forceinline
void
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Violations::add
(
unsigned
int
i
) {
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set
(
i
);
if
(
i
<
fst
)
fst
=
i
;
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}
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forceinline
unsigned
int
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Violations::get
(
void
) {
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assert(!
empty
());
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fst
=
next
(
fst
);
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assert(
Support::BitSetBase::get
(
fst
));
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clear
(
fst
);
fst
++;
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return
fst
-1;
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}
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}}}
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// STATISTICS: int-prop
Gecode::Support::BitSetBase::init
void init(A &a, unsigned int s, bool setbits=false)
Initialize for s bits and allocator a (only after default constructor)
Definition:
bitset-base.hpp:568
Gecode::Support::BitSetBase::set
void set(unsigned int i)
Set bit i.
Definition:
bitset-base.hpp:595
Gecode::Int::Sequence::Violations::init
void init(Space &home, unsigned int n)
Initialize violation set for n violations.
Definition:
violations.hpp:64
Gecode::Int::Sequence::Violations::add
void add(unsigned int i)
Add i to violation set.
Definition:
violations.hpp:82
Gecode::Int::Sequence::Violations::update
void update(Space &home, Violations &v)
Update violation set during cloning.
Definition:
violations.hpp:76
Gecode::Int::Sequence::Violations::empty
bool empty(void) const
Return whether set is empty.
Definition:
violations.hpp:70
Gecode::Space
Computation spaces.
Definition:
core.hpp:1742
Gecode::Int::Sequence::Violations
Simple bitsets for recording violations.
Definition:
violations.hpp:40
Gecode
Gecode toplevel namespace
Gecode::Support::BitSetBase::clear
void clear(unsigned int i)
Clear bit i.
Definition:
bitset-base.hpp:600
Gecode::Support::BitSetBase
Basic bitset support.
Definition:
bitset-base.hpp:190
Gecode::Support::BitSetBase::size
unsigned int size(void) const
Return size of bitset (number of bits)
Definition:
bitset-base.hpp:585
Gecode::Int::Sequence::Violations::Violations
Violations(void)
Default constructor.
Definition:
violations.hpp:61
Test::Int::Distinct::v
const int v[7]
Definition:
distinct.cpp:259
Gecode::Support::BitSetBase::get
bool get(unsigned int i) const
Access value at bit i.
Definition:
bitset-base.hpp:590
Gecode::Support::BitSetBase::next
unsigned int next(unsigned int i) const
Return position greater or equal i of next set bit (i is allowed to be equal to size)
Definition:
bitset-base.hpp:606
Gecode::Int::Sequence::Violations::fst
unsigned int fst
The (possibly) first set bit (set is empty if fst == sz)
Definition:
violations.hpp:43
forceinline
#define forceinline
Definition:
config.hpp:185
Gecode::Int::Sequence::Violations::get
unsigned int get(void)
Get first element from violation set and remove it.
Definition:
violations.hpp:87
n
int n
Number of negative literals for node type.
Definition:
bool-expr.cpp:234
Test::Int::Basic::i
Gecode::IntArgs i({1, 2, 3, 4})