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| package org.sat4j.minisat.orders; |
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| import static org.sat4j.minisat.core.LiteralsUtils.neg; |
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| import static org.sat4j.minisat.core.LiteralsUtils.var; |
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| |
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| import java.math.BigInteger; |
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| |
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| import org.sat4j.reader.ObjectiveFunction; |
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| import org.sat4j.specs.IVec; |
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| import org.sat4j.specs.IVecInt; |
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| |
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| public class VarOrderHeapObjective extends VarOrderHeap { |
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| private static final long serialVersionUID = 1L; |
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| private ObjectiveFunction obj; |
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0
| public void setObjectiveFunction(ObjectiveFunction obj) {
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0
| this.obj = obj;
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| } |
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| |
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1
| @Override
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| public void init() { |
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1
| super.init();
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1
| if (obj != null) {
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0
| IVecInt vars = obj.getVars();
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0
| IVec<BigInteger> coefs = obj.getCoeffs();
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0
| for (int i = 0; i < vars.size(); i++) {
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0
| int p = lits.getFromPool(vars.get(i));
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| BigInteger c = coefs.get(i);
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0
| if (c.signum() < 0) {
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| p = neg(p);
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| } |
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| int var = var(p);
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0
| activity[var] = c.abs().doubleValue();
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0
| if (heap.inHeap(var))
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| heap.increase(var);
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| phase[var] = neg(p);
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| } |
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| } |
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| } |
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| } |
