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bool.cpp
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1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Copyright:
7 * Christian Schulte, 2006
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33
34#include <gecode/int.hh>
35
36namespace Gecode { namespace Int {
37
38 BoolVarImp BoolVarImp::s_one(1);
39 BoolVarImp BoolVarImp::s_zero(0);
40
43 assert(none());
44 bits() ^= (NONE ^ ONE);
45 assert(one());
46 IntDelta d(0);
47 return notify(home,ME_BOOL_VAL,d);
48 }
49
52 assert(none());
53 bits() ^= (NONE ^ ZERO);
54 assert(zero());
55 IntDelta d(1);
56 return notify(home,ME_BOOL_VAL,d);
57 }
58
59 void
61 bool schedule) {
62 // Subscription can be used with integer propagation conditions,
63 // which must be remapped to the single Boolean propagation condition.
65 }
66
67 void
71
72 void
76
77}}
78
79// STATISTICS: int-var
Base-class for advisors.
Definition core.hpp:1294
Gecode::ModEvent notify(Gecode::Space &home, Gecode::ModEvent me, Gecode::Delta &d)
Notify that variable implementation has been modified with modification event me and delta informatio...
Definition var-imp.hpp:322
void subscribe(Gecode::Space &home, Gecode::Propagator &p, Gecode::PropCond pc, bool assigned, bool schedule)
Subscribe propagator p with propagation condition pc.
Definition var-imp.hpp:304
void reschedule(Gecode::Space &home, Gecode::Propagator &p, Gecode::PropCond pc, bool assigned)
Re-schedule propagator p.
Definition var-imp.hpp:317
Boolean variable implementation.
Definition var-imp.hpp:491
bool zero(void) const
Test whether variable is assigned to zero.
Definition bool.hpp:131
bool none(void) const
Test whether variable is not yet assigned.
Definition bool.hpp:139
static void schedule(Space &home, Propagator &p, ModEvent me)
Schedule propagator p with modification event me.
Definition bool.hpp:405
bool one(void) const
Test whether variable is assigned to one.
Definition bool.hpp:135
ModEvent one_none(Space &home)
Assign unassigned variable to one.
Definition bool.cpp:42
static const BoolStatus NONE
Status of domain not yet assigned.
Definition var-imp.hpp:525
void subscribe(Space &home, Propagator &p, PropCond pc, bool schedule=true)
Subscribe propagator p to variable with propagation condition pc.
Definition bool.cpp:60
void reschedule(Space &home, Propagator &p, PropCond pc)
Re-schedule propagator p.
Definition bool.cpp:68
static const BoolStatus ZERO
Status of domain assigned to zero.
Definition var-imp.hpp:521
bool assigned(void) const
Test whether variable is assigned.
Definition bool.hpp:85
ModEvent zero_none(Space &home)
Assign unassigned variable to zero.
Definition bool.cpp:51
static const BoolStatus ONE
Status of domain assigned to one.
Definition var-imp.hpp:523
Integer delta information for advisors.
Definition var-imp.hpp:51
Base-class for propagators.
Definition core.hpp:1066
Computation spaces.
Definition core.hpp:1744
Finite domain integers.
const Gecode::ModEvent ME_BOOL_VAL
Domain operation has resulted in a value (assigned variable)
Definition var-type.hpp:116
const Gecode::PropCond PC_BOOL_VAL
Propagate when a view becomes assigned (single value)
Definition var-type.hpp:126
Gecode toplevel namespace
int PropCond
Type for propagation conditions.
Definition core.hpp:72
int ModEvent
Type for modification events.
Definition core.hpp:62