@Override
public void consistency(Store store) {
do {
// domain consistency
int xMin;
if (Math.abs(p.min()) < (double) IntDomain.MaxInt)
xMin = (int) (Math.round(Math.ceil(p.min())));
else xMin = IntDomain.MinInt;
int xMax;
if (Math.abs(p.max()) < (double) IntDomain.MaxInt)
xMax = (int) (Math.round(Math.floor(p.max())));
else xMax = IntDomain.MaxInt;
if (xMin > xMax) {
int t = xMax;
xMax = xMin;
xMin = t;
}
x.domain.in(store.level, x, xMin, xMax);
store.propagationHasOccurred = false;
p.domain.in(store.level, p, x.min(), x.max());
} while (store.propagationHasOccurred);
}
Constraint constraint(FloatVar v) {
ArrayList<Constraint> list = new ArrayList<Constraint>();
for (int i = 0; i < v.dom().modelConstraints.length; i++)
if (v.dom().modelConstraints[i] != null)
for (int j = 0; j < v.dom().modelConstraints[i].length; j++) {
if (v.dom().modelConstraints[i][j] != null) {
Constraint c = v.dom().modelConstraints[i][j];
if (eval.search(c) == -1) {
if (Derivative.derivateConstraints.contains(c)) continue;
if (!list.contains(c)) list.add(c);
}
}
}
// if (debug)
// System.out.println ("Possible constraints for variable " + v + " are " + list);
Constraint c;
if (list.size() == 1) c = list.get(0);
else c = Derivative.resolveConstraint(v, list);
return c;
}
@Override
public void impose(Store store) {
p.putModelConstraint(this, getConsistencyPruningEvent(p));
r.putModelConstraint(this, getConsistencyPruningEvent(r));
store.addChanged(this);
store.countConstraint();
}
@Override
public void notConsistency(Store store) {
do {
store.propagationHasOccurred = false;
if (r.singleton()) p.domain.inComplement(store.level, p, r.min() - c);
if (p.singleton()) r.domain.inComplement(store.level, r, p.min() + c);
} while (store.propagationHasOccurred);
}
@Override
public void consistency(Store store) {
do {
store.propagationHasOccurred = false;
FloatIntervalDomain pDom = FloatDomain.subBounds(r.min(), r.max(), c, c);
p.domain.in(store.level, p, pDom.min(), pDom.max());
FloatIntervalDomain rDom = FloatDomain.addBounds(p.min(), p.max(), c, c);
r.domain.in(store.level, r, rDom.min(), rDom.max());
} while (store.propagationHasOccurred);
}
public FloatVar derivative(Store store, FloatVar f, java.util.Set<FloatVar> vars, FloatVar x) {
if (f.equals(r)) {
// f = p + c
// f' = d(p)
FloatVar v = Derivative.getDerivative(store, p, vars, x);
return v;
} else if (f.equals(p)) {
// f = r - c
// f' = d(r)
FloatVar v = Derivative.getDerivative(store, r, vars, x);
return v;
}
return null;
}
@Override
public boolean satisfied() {
return (p.singleton()
&& r.singleton()
&& r.value() - p.value() - c < FloatDomain.epsilon(r.value() - p.value() - c));
}
@Override
public boolean satisfied() {
return x.singleton() && p.singleton() && x.min() <= p.max() && x.max() >= p.min();
}
@Override
public void removeConstraint() {
x.removeConstraint(this);
p.removeConstraint(this);
}
@Override
public boolean notSatisfied() {
FloatDomain pDom = p.dom(), rDom = r.dom();
return (pDom.max() + c < rDom.min() || pDom.min() + c > rDom.max());
}
boolean contains(FloatVar[] fs, FloatVar r) {
for (FloatVar f : fs) if (f.equals(r)) return true;
return false;
}
double value(FloatVar f) {
if (map.get(f) != null) return map.get(f);
// else if (f.singleton())
// return f.value();
Constraint c = constraint(f);
if (c != null) eval.push(c);
else if (f.singleton()) return f.value();
// if (debug)
// System.out.println ("current constraint for variable " + f + " is " + c);
double result = 0.0;
if (c instanceof PmulQeqR) {
if (f.equals(((PmulQeqR) c).r)) {
result = value(((PmulQeqR) c).p) * value(((PmulQeqR) c).q);
} else {
System.out.println(
"!!! Anable to compute middle value for "
+ f
+ "; + Constraint "
+ c
+ " does not define a function for variable\n");
System.exit(0);
}
} else if (c instanceof PmulCeqR) {
if (f.equals(((PmulCeqR) c).r)) result = value(((PmulCeqR) c).p) * ((PmulCeqR) c).c;
else {
System.out.println(
"!!! Anable to compute middle value for "
+ f
+ "; + Constraint "
+ c
+ " does not define a function for variable\n");
System.exit(0);
}
} else if (c instanceof PdivQeqR) {
if (f.equals(((PdivQeqR) c).r)) {
result = value(((PdivQeqR) c).p) / value(((PdivQeqR) c).q);
} else {
System.out.println(
"!!! Anable to compute middle value for "
+ f
+ "; + Constraint "
+ c
+ " does not define a function for variable\n");
System.exit(0);
}
} else if (c instanceof PplusQeqR) {
if (f.equals(((PplusQeqR) c).r)) result = value(((PplusQeqR) c).p) + value(((PplusQeqR) c).q);
else {
System.out.println(
"!!! Anable to compute middle value for "
+ f
+ "; + Constraint "
+ c
+ " does not define a function for variable\n");
System.exit(0);
}
} else if (c instanceof PplusCeqR) {
if (f.equals(((PplusCeqR) c).r)) result = value(((PplusCeqR) c).p) + ((PplusCeqR) c).c;
else {
System.out.println(
"!!! Anable to compute middle value for "
+ f
+ "; + Constraint "
+ c
+ " does not define a function for variable\n");
System.exit(0);
}
} else if (c instanceof PminusQeqR) {
if (f.equals(((PminusQeqR) c).r))
result = value(((PminusQeqR) c).p) - value(((PminusQeqR) c).q);
else {
System.out.println(
"!!! Anable to compute middle value for "
+ f
+ "; + Constraint "
+ c
+ " does not define a function for variable\n");
System.exit(0);
}
} else if (c instanceof LinearFloat) {
FloatVar[] v = ((LinearFloat) c).list;
double[] w = ((LinearFloat) c).weights;
double sum = ((LinearFloat) c).sum;
FloatVar vOut = null;
double wOut = 1000.0;
for (int i = 0; i < v.length; i++) {
if (!v[i].equals(f)) sum -= value(v[i]) * w[i];
else {
vOut = v[i];
wOut = w[i];
}
}
if (vOut != null) result = sum / wOut;
else {
System.out.println(
"!!! Anable to compute middle value for "
+ f
+ "; + Constraint "
+ c
+ " does not define a function for variable\n");
System.exit(0);
}
} else {
System.out.println("!!! Constraint " + c + " is not yet supported in Newtoen method\n");
System.exit(0);
}
eval.pop();
// if (debug)
// System.out.println ("returns " + result);
return result;
}
