Package org.sat4j.core

Examples of org.sat4j.core.VecInt.push()

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        processClause(clause);
        // taken from Niklas Een et al SAT 2007 paper
        // Adding the following redundant clause will improve unit propagation
        // y -> x2 or x3
        clause.clear();
        clause.push(-y).push(x2).push(x3);
        processClause(clause);
    }

    /**
     * Translate y <=> x1 /\ x2 /\ ... /\ xn into clauses.
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    public void and(int y, IVecInt literals) throws ContradictionException {
        // y <=> AND x1 ... xn

        // y <= x1 .. xn
        IVecInt clause = new VecInt(literals.size() + 2);
        clause.push(y);
        for (int i = 0; i < literals.size(); i++) {
            clause.push(-literals.get(i));
        }
        processClause(clause);
        clause.clear();
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        // y <= x1 .. xn
        IVecInt clause = new VecInt(literals.size() + 2);
        clause.push(y);
        for (int i = 0; i < literals.size(); i++) {
            clause.push(-literals.get(i));
        }
        processClause(clause);
        clause.clear();
        for (int i = 0; i < literals.size(); i++) {
            // y => xi
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        processClause(clause);
        clause.clear();
        for (int i = 0; i < literals.size(); i++) {
            // y => xi
            clause.clear();
            clause.push(-y);
            clause.push(literals.get(i));
            processClause(clause);
        }
    }
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        clause.clear();
        for (int i = 0; i < literals.size(); i++) {
            // y => xi
            clause.clear();
            clause.push(-y);
            clause.push(literals.get(i));
            processClause(clause);
        }
    }

    /**
 
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     * @param x2
     * @throws ContradictionException
     */
    public void and(int y, int x1, int x2) throws ContradictionException {
        IVecInt clause = new VecInt(4);
        clause.push(-y);
        clause.push(x1);
        addClause(clause);
        clause.clear();
        clause.push(-y);
        clause.push(x2);
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     * @throws ContradictionException
     */
    public void and(int y, int x1, int x2) throws ContradictionException {
        IVecInt clause = new VecInt(4);
        clause.push(-y);
        clause.push(x1);
        addClause(clause);
        clause.clear();
        clause.push(-y);
        clause.push(x2);
        addClause(clause);
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        IVecInt clause = new VecInt(4);
        clause.push(-y);
        clause.push(x1);
        addClause(clause);
        clause.clear();
        clause.push(-y);
        clause.push(x2);
        addClause(clause);
        clause.clear();
        clause.push(y);
        clause.push(-x1);
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        clause.push(-y);
        clause.push(x1);
        addClause(clause);
        clause.clear();
        clause.push(-y);
        clause.push(x2);
        addClause(clause);
        clause.clear();
        clause.push(y);
        clause.push(-x1);
        clause.push(-x2);
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        clause.clear();
        clause.push(-y);
        clause.push(x2);
        addClause(clause);
        clause.clear();
        clause.push(y);
        clause.push(-x1);
        clause.push(-x2);
        addClause(clause);
    }
   
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