/usr/include/gecode/int/member/prop.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.
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 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2011
*
* Last modified:
* $Date: 2012-09-07 17:31:22 +0200 (Fri, 07 Sep 2012) $ by $Author: schulte $
* $Revision: 13068 $
*
* 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/rel.hh>
namespace Gecode { namespace Int { namespace Member {
template<class View>
forceinline
Prop<View>::Prop(Home home, ValSet& vs0, ViewArray<View>& x, View y)
: NaryOnePropagator<View,PC_INT_DOM>(home,x,y),
vs(vs0) {}
template<class View>
forceinline void
Prop<View>::add(Space& home, ValSet& vs, ViewArray<View>& x) {
int n=x.size();
for (int i=n; i--; )
if (x[i].assigned()) {
vs.add(home, x[i].val());
x[i] = x[--n];
}
x.size(n);
}
template<class View>
forceinline void
Prop<View>::eliminate(Space& home) {
int n=x.size();
for (int i=n; i--; )
if ((rtest_eq_dom(x[i],y) == RT_FALSE) || vs.subset(x[i])) {
// x[i] is different from y or values are contained in vs
x[i].cancel(home, *this, PC_INT_DOM);
x[i] = x[--n];
}
x.size(n);
}
template<class View>
inline ExecStatus
Prop<View>::post(Home home, ViewArray<View>& x, View y) {
if (x.size() == 0)
return ES_FAILED;
x.unique(home);
if (x.size() == 1)
return Rel::EqDom<View,View>::post(home,x[0],y);
if (x.same(home,y))
return ES_OK;
// Eliminate assigned views and store them into the value set
ValSet vs;
add(home, vs, x);
if (x.size() == 0) {
ValSet::Ranges vsr(vs);
GECODE_ME_CHECK(y.inter_r(home,vsr,false));
return ES_OK;
}
(void) new (home) Prop<View>(home, vs, x, y);
return ES_OK;
}
template<class View>
forceinline ExecStatus
Prop<View>::post(Home home, ValSet& vs, ViewArray<View>& x, View y) {
(void) new (home) Prop<View>(home, vs, x, y);
return ES_OK;
}
template<class View>
forceinline
Prop<View>::Prop(Space& home, bool share, Prop<View>& p)
: NaryOnePropagator<View,PC_INT_DOM>(home, share, p) {
vs.update(home, share, p.vs);
}
template<class View>
Propagator*
Prop<View>::copy(Space& home, bool share) {
return new (home) Prop<View>(home, share, *this);
}
template<class View>
forceinline size_t
Prop<View>::dispose(Space& home) {
vs.dispose(home);
(void) NaryOnePropagator<View,PC_INT_DOM>::dispose(home);
return sizeof(*this);
}
template<class View>
PropCost
Prop<View>::cost(const Space&, const ModEventDelta&) const {
return PropCost::linear(PropCost::HI, x.size()+1);
}
template<class View>
ExecStatus
Prop<View>::propagate(Space& home, const ModEventDelta& med) {
// Add assigned views to value set
if (View::me(med) == ME_INT_VAL)
add(home,vs,x);
// Eliminate views from x
eliminate(home);
if (x.size() == 0) {
// y must have values in the value set
ValSet::Ranges vsr(vs);
GECODE_ME_CHECK(y.inter_r(home,vsr,false));
return home.ES_SUBSUMED(*this);
}
// Constrain y to union of x and value set
Region r(home);
assert(x.size() > 0);
ValSet::Ranges vsr(vs);
ViewRanges<View> xsr(x[x.size()-1]);
Iter::Ranges::NaryUnion u(r,vsr,xsr);
for (int i=x.size()-1; i--; ) {
ViewRanges<View> xir(x[i]);
u |= xir;
}
GECODE_ME_CHECK(y.inter_r(home,u,false));
// Check whether all values in y are already in the value set
if (vs.subset(y))
return home.ES_SUBSUMED(*this);
return ES_FIX;
}
}}}
// STATISTICS: int-prop
|