Package ptolemy.actor.util

Class FuzzyDoubleComparator

  • All Implemented Interfaces:
    java.util.Comparator
    @Deprecated
public class FuzzyDoubleComparator
extends java.lang.Object
implements java.util.Comparator
    Deprecated.
    As Ptolemy II 4.1, use GeneralComparator instead.
    Compare two Double objects with respect to a fuzzy threshold. The threshold is set by setThreshold(). If the difference of the two double number is less than the threshold, then they are considered equal. The default value of the fuzzy threshold is 1e-10.

    After Ptolemy II 4.1, this class is not used any more. Use GeneralComparator instead.

    Since:
    Ptolemy II 5.2
    Version:
    $Id$
    Author:
    Jie Liu
    Pt.AcceptedRating:
    Yellow (hyzheng)
    Pt.ProposedRating:
    Yellow (liuj)

    • Constructor Summary

      Constructors 
      Constructor Description
      FuzzyDoubleComparator()
      Deprecated.
      Construct a FuzzyDoubleComparator.
      FuzzyDoubleComparator​(double threshold)
      Deprecated.
      Construct a FuzzyDoubleComparator with the given threshold.

    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      int compare​(java.lang.Object first, java.lang.Object second)
      Deprecated.
      Compare two objects according to a threshold.
      double getThreshold()
      Deprecated.
      Return the fuzziness threshold.
      void setThreshold​(double threshold)
      Deprecated.
      Set the fuzziness threshold.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

      • Methods inherited from interface java.util.Comparator

        equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

    • Constructor Detail

      • FuzzyDoubleComparator

        public FuzzyDoubleComparator()
        Deprecated.
        Construct a FuzzyDoubleComparator. The compare threshold is 1e-10

      • FuzzyDoubleComparator

        public FuzzyDoubleComparator​(double threshold)
        Deprecated.
        Construct a FuzzyDoubleComparator with the given threshold.
        Parameters:
        threshold - The threshold

    • Method Detail

      • compare

        public int compare​(java.lang.Object first,
                   java.lang.Object second)
        Deprecated.
        Compare two objects according to a threshold. Return -1 if first < second - threshold/2; return 1 if first > second + threshold/2; return 0 otherwise.

        If any of the argument is not a Double object, a ClassCastException will be thrown.

        Specified by:
        compare in interface java.util.Comparator
        Parameters:
        first - The first Double object.
        second - The second Double object.
        Returns:
        The comparison result, -1, 0, or 1.

      • getThreshold

        public double getThreshold()
        Deprecated.
        Return the fuzziness threshold.
        Returns:
        The fuzziness threshold.
        See Also:
        setThreshold(double)

      • setThreshold

        public void setThreshold​(double threshold)
        Deprecated.
        Set the fuzziness threshold. The threshold is always positive. If the argument is negative, then its absolute value is taken.
        Parameters:
        threshold - The threshold.
        See Also:
        getThreshold()