naturalnumberdoubler.java

来自「Java版的SAT求解器」· Java 代码 · 共 34 行

package positronic.satisfiability.naturalnumber;

/**
 * <p>Title: TBS</p>
 * <p>Description: TBS</p>
 * <p>Copyright (c) 2004</p>
 * <p>Company: Positronic Software</p>
 * @author Kerry Michael Soileau
 * @version 1.0
 */

import positronic.satisfiability.elements.*;

public class NaturalNumberDoubler extends Problem implements IProblem
{
  private static final long serialVersionUID = 1L;
  
  public NaturalNumberDoubler(INaturalNumber X, INaturalNumber Z) throws Exception
  {
    BitFixer bf0=new BitFixer(Z.getBooleanVariable(0),false);
    IProblem p=bf0;
    for(int i=0;i<INaturalNumber.LENGTH-1;i++)
    {
      p=new Conjunction(p,new BitEqualizer(Z.getBooleanVariable(i+1),X.getBooleanVariable(i)));
    }
    p=new Conjunction(p,new BitFixer(X.getBooleanVariable(INaturalNumber.LENGTH-1),false));

    for(int i=INaturalNumber.LENGTH+1;i<INaturalNumber.LENGTH;i++)
    {
      p=new Conjunction(p,new BitFixer(Z.getBooleanVariable(i),false));
    }
    this.setClauses(p.getClauses());
  }
}