inline ExecStatus
Eqv<BVA,BVB,BVC>::post(Home home, BVA b0, BVB b1, BVC b2){
switch (bool_test(b0,b1)) {
case BT_SAME:
GECODE_ME_CHECK(b2.one(home)); break;
case BT_COMP:
GECODE_ME_CHECK(b2.zero(home)); break;
case BT_NONE:
if (b2.one())
return Eq<BVA,BVB>::post(home,b0,b1);
if (b0.one()) {
if (b1.one()) {
GECODE_ME_CHECK(b2.one(home)); return ES_OK;
} else if (b1.zero()) {
GECODE_ME_CHECK(b2.zero(home)); return ES_OK;
}
}
if (b0.zero()) {
if (b1.one()) {
GECODE_ME_CHECK(b2.zero(home)); return ES_OK;
} else if (b1.zero()) {
GECODE_ME_CHECK(b2.one(home)); return ES_OK;
}
}
(void) new (home) Eqv(home,b0,b1,b2);
break;
default:
GECODE_NEVER;
}
return ES_OK;
}
inline ExecStatus
QEqv<BVA,BVB,BVC>::post(Home home, BVA b0, TQuantifier _q0, int _r0, BVB b1, TQuantifier _q1, int _r1, BVC b2) {
switch (bool_test(b0,b1)) {
case BT_SAME:
GECODE_ME_CHECK(b2.one(home)); break;
case BT_COMP:
GECODE_ME_CHECK(b2.zero(home)); break;
case BT_NONE:
if ( ((_q0 == FORALL) && (_q1 == FORALL))
|| ((_r0 < _r1) && (_q1 == FORALL))
|| ((_r0 > _r1) && (_q0 == FORALL)) )
{
GECODE_ME_CHECK(b2.zero(home)); return ES_OK;
}
if (b2.one())
return QEq<BVA,BVB>::post(home,b0,_q0,_r0,b1,_q1,_r1);
if (b2.zero())
return QXor<BVA,BVB>::post(home,b0,_q0,_r0,b1,_q1,_r1);
if (b0.one()) {
if (b1.one()) {
GECODE_ME_CHECK(b2.one(home)); return ES_OK;
} else if (b1.zero()) {
GECODE_ME_CHECK(b2.zero(home)); return ES_OK;
}
}
if (b0.zero()) {
if (b1.one()) {
GECODE_ME_CHECK(b2.zero(home)); return ES_OK;
} else if (b1.zero()) {
GECODE_ME_CHECK(b2.one(home)); return ES_OK;
}
}
(void) new (home) QEqv(home,b0,_q0,_r0,b1,_q1,_r1,b2);
break;
default:
GECODE_NEVER;
}
return ES_OK;
}
