/usr/include/gecode/int/bool/eq.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 | /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2004
*
* 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.
*
*/
namespace Gecode { namespace Int { namespace Bool {
template<class BVA, class BVB>
forceinline
Eq<BVA,BVB>::Eq(Home home, BVA b0, BVB b1)
: BoolBinary<BVA,BVB>(home,b0,b1) {}
template<class BVA, class BVB>
forceinline
Eq<BVA,BVB>::Eq(Space& home, bool share, Eq<BVA,BVB>& p)
: BoolBinary<BVA,BVB>(home,share,p) {}
template<class BVA, class BVB>
forceinline
Eq<BVA,BVB>::Eq(Space& home, bool share, Propagator& p,
BVA b0, BVB b1)
: BoolBinary<BVA,BVB>(home,share,p,b0,b1) {}
template<class BVA, class BVB>
Actor*
Eq<BVA,BVB>::copy(Space& home, bool share) {
return new (home) Eq<BVA,BVB>(home,share,*this);
}
template<class BVA, class BVB>
inline ExecStatus
Eq<BVA,BVB>::post(Home home, BVA b0, BVB b1) {
switch (bool_test(b0,b1)) {
case BT_SAME: return ES_OK;
case BT_COMP: return ES_FAILED;
case BT_NONE:
if (b0.zero()) {
GECODE_ME_CHECK(b1.zero(home));
} else if (b0.one()) {
GECODE_ME_CHECK(b1.one(home));
} else if (b1.zero()) {
GECODE_ME_CHECK(b0.zero(home));
} else if (b1.one()) {
GECODE_ME_CHECK(b0.one(home));
} else {
(void) new (home) Eq<BVA,BVB>(home,b0,b1);
}
break;
default: GECODE_NEVER;
}
return ES_OK;
}
template<class BVA, class BVB>
ExecStatus
Eq<BVA,BVB>::propagate(Space& home, const ModEventDelta&) {
#define GECODE_INT_STATUS(S0,S1) \
((BVA::S0<<(1*BVA::BITS))|(BVB::S1<<(0*BVB::BITS)))
switch ((x0.status() << (1*BVA::BITS)) | (x1.status() << (0*BVB::BITS))) {
case GECODE_INT_STATUS(NONE,NONE):
GECODE_NEVER;
case GECODE_INT_STATUS(NONE,ZERO):
GECODE_ME_CHECK(x0.zero_none(home)); break;
case GECODE_INT_STATUS(NONE,ONE):
GECODE_ME_CHECK(x0.one_none(home)); break;
case GECODE_INT_STATUS(ZERO,NONE):
GECODE_ME_CHECK(x1.zero_none(home)); break;
case GECODE_INT_STATUS(ZERO,ZERO):
break;
case GECODE_INT_STATUS(ZERO,ONE):
return ES_FAILED;
case GECODE_INT_STATUS(ONE,NONE):
GECODE_ME_CHECK(x1.one_none(home)); break;
case GECODE_INT_STATUS(ONE,ZERO):
return ES_FAILED;
case GECODE_INT_STATUS(ONE,ONE):
break;
default:
GECODE_NEVER;
}
return home.ES_SUBSUMED(*this);
#undef GECODE_INT_STATUS
}
template<class BV>
forceinline
NaryEq<BV>::NaryEq(Home home, ViewArray<BV>& x)
: NaryPropagator<BV,PC_BOOL_VAL>(home,x) {}
template<class BV>
forceinline
NaryEq<BV>::NaryEq(Space& home, bool share, NaryEq<BV>& p)
: NaryPropagator<BV,PC_BOOL_VAL>(home,share,p) {}
template<class BV>
Actor*
NaryEq<BV>::copy(Space& home, bool share) {
return new (home) NaryEq<BV>(home,share,*this);
}
template<class BV>
inline ExecStatus
NaryEq<BV>::post(Home home, ViewArray<BV>& x) {
x.unique(home);
int n = x.size();
if (n < 2)
return ES_OK;
if (n == 2)
return Eq<BV,BV>::post(home,x[0],x[1]);
for (int i=n; i--; )
if (x[i].assigned()) {
if (x[i].one()) {
for (int j=i; j--; )
GECODE_ME_CHECK(x[j].one(home));
for (int j=i+1; j<n; j++)
GECODE_ME_CHECK(x[j].one_none(home));
} else {
for (int j=i; j--; )
GECODE_ME_CHECK(x[j].zero(home));
for (int j=i+1; j<n; j++)
GECODE_ME_CHECK(x[j].zero_none(home));
}
return ES_OK;
}
(void) new (home) NaryEq<BV>(home,x);
return ES_OK;
}
template<class BV>
PropCost
NaryEq<BV>::cost(const Space&, const ModEventDelta&) const {
return PropCost::unary(PropCost::LO);
}
template<class BV>
ExecStatus
NaryEq<BV>::propagate(Space& home, const ModEventDelta&) {
int n=x.size();
int i=0;
while (true) {
if (x[i].assigned()) {
if (x[i].one()) {
for (int j=0; j<i; j++)
GECODE_ME_CHECK(x[j].one_none(home));
for (int j=i+1; j<n; j++)
GECODE_ME_CHECK(x[j].one(home));
} else {
for (int j=0; j<i; j++)
GECODE_ME_CHECK(x[j].zero_none(home));
for (int j=i+1; j<n; j++)
GECODE_ME_CHECK(x[j].zero(home));
}
return home.ES_SUBSUMED(*this);
}
i++;
}
GECODE_NEVER;
return ES_FIX;
}
}}}
// STATISTICS: int-prop
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