[jira] [Updated] (NUMBERS-90) DoublePrecisionContext

["Matt Juntunen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NUMBERS-90?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Juntunen updated NUMBERS-90:
---------------------------------
    Description: 
We should add a new class to commons-numbers-core that encapsulates configurable strategies for comparing doubles. This is required for GEOMETRY-11. Here is what I'm picturing:
{code:java}
// abstract class for the general concept of comparisons
public abstract class DoublePrecisionContext implements Comparator<Double> {
    public abstract boolean equals(double a, double b);

    public int compare(double a, double b) { /* ... */ }
    public int compare(Double a, Double b) { /* ... */ }
}

// ...

// concrete class implementing a specific strategy
public class EpsilonUlpDoublePrecisionContext extends DoublePrecisionContext {
    public EpsilonUlpDoublePrecisionContext(double eps, double maxUlps) { /* ... */ }

    @Override
    public boolean equals(double a, double b) { /* ... */ }
} {code}

Pull request: https://github.com/apache/commons-numbers/pull/28


  was:
We should add a new class to commons-numbers-core that encapsulates configurable strategies for comparing doubles. This is required for GEOMETRY-11. Here is what I'm picturing:
{code:java}
// abstract class for the general concept of comparisons
public abstract class DoublePrecisionContext implements Comparator<Double> {
    public abstract boolean equals(double a, double b);

    public int compare(double a, double b) { /* ... */ }
    public int compare(Double a, Double b) { /* ... */ }
}

// ...

// concrete class implementing a specific strategy
public class EpsilonUlpDoublePrecisionContext extends DoublePrecisionContext {
    public EpsilonUlpDoublePrecisionContext(double eps, double maxUlps) { /* ... */ }

    @Override
    public boolean equals(double a, double b) { /* ... */ }
} 
{code}


> DoublePrecisionContext
> ----------------------
>
>                 Key: NUMBERS-90
>                 URL: https://issues.apache.org/jira/browse/NUMBERS-90
>             Project: Commons Numbers
>          Issue Type: New Feature
>            Reporter: Matt Juntunen
>            Priority: Blocker
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> We should add a new class to commons-numbers-core that encapsulates configurable strategies for comparing doubles. This is required for GEOMETRY-11. Here is what I'm picturing:
> {code:java}
> // abstract class for the general concept of comparisons
> public abstract class DoublePrecisionContext implements Comparator<Double> {
>     public abstract boolean equals(double a, double b);
>     public int compare(double a, double b) { /* ... */ }
>     public int compare(Double a, Double b) { /* ... */ }
> }
> // ...
> // concrete class implementing a specific strategy
> public class EpsilonUlpDoublePrecisionContext extends DoublePrecisionContext {
>     public EpsilonUlpDoublePrecisionContext(double eps, double maxUlps) { /* ... */ }
>     @Override
>     public boolean equals(double a, double b) { /* ... */ }
> } {code}
> Pull request: https://github.com/apache/commons-numbers/pull/28



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