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From Ramiro Pereira de Magalhães (JIRA) <>
Subject [jira] [Commented] (MATH-889) Add a method in Interval that verifies if a double is inside the Interval
Date Sun, 04 Nov 2012 23:58:12 GMT


Ramiro Pereira de Magalhães commented on MATH-889:

Luc, your suggestion to reuse the design of the IntervalSet class make a lot of sense to me.
The threshold parameter may be convenient to others, but not to my current use cases.
> Add a method in Interval that verifies if a double is inside the Interval
> -------------------------------------------------------------------------
>                 Key: MATH-889
>                 URL:
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 3.0
>            Reporter: Ramiro Pereira de Magalhães
>            Priority: Minor
> It would be convenient if class org.apache.commons.math3.geometry.euclidean.oned.Interval
had a method such as the one below.
> {code}
> Here is the method code that may be added to the class.
>     /** Verifies if x is inside this Interval.
>      * @return true if x is a value between this Interval lower and upper
>      * bounds, false otherwise
>      */
>     public boolean contains(double x) {
>         return upper >= x && lower <= x;
>     }
> {code}
> Notice that I'm assuming that an Interval includes its endpoints which may not be true
in certain applications. This may imply the need to improve the Interval class (by adding
methods or internal state) that describe the inclusion or exclusion of endpoints.

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