1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2019
*
* 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 <gecode/int/order.hh>
namespace Gecode { namespace Int { namespace Order {
Actor*
OrderProp::copy(Space& home) {
return new (home) OrderProp(home,*this);
}
PropCost
OrderProp::cost(const Space&, const ModEventDelta&) const {
return PropCost::binary(PropCost::LO);
}
void
OrderProp::reschedule(Space& home) {
s0.reschedule(home,*this,PC_INT_BND);
s1.reschedule(home,*this,PC_INT_BND);
b.reschedule(home,*this,PC_INT_VAL);
}
ExecStatus
OrderProp::propagate(Space& home, const ModEventDelta&) {
if (s0.max() + p0 <= s1.min()) {
GECODE_ME_CHECK(b.zero(home));
return home.ES_SUBSUMED(*this);
} else if (s1.max() + p1 <= s0.min()) {
GECODE_ME_CHECK(b.one(home));
return home.ES_SUBSUMED(*this);
} else if ((s1.min() + p1 > s0.max()) || b.zero()) {
GECODE_ME_CHECK(b.zero(home));
GECODE_REWRITE(*this,(Rel::Lq<OffsetView,IntView>::post
(home(*this),OffsetView(s0,p0),s1)));
} else if ((s0.min() + p0 > s1.max()) || b.one()) {
GECODE_ME_CHECK(b.one(home));
GECODE_REWRITE(*this,(Rel::Lq<OffsetView,IntView>::post
(home(*this),OffsetView(s1,p1),s0)));
}
return ES_FIX;
}
size_t
OrderProp::dispose(Space& home) {
s0.cancel(home,*this,PC_INT_BND);
s1.cancel(home,*this,PC_INT_BND);
b.cancel(home,*this,PC_INT_VAL);
(void) Propagator::dispose(home);
return sizeof(*this);
}
}}}
// STATISTICS: int-prop
|
