Class SumOfLogs

  • All Implemented Interfaces:
    MathArrays.Function, StorelessUnivariateStatistic, UnivariateStatistic

    public class SumOfLogs
    extends AbstractStorelessUnivariateStatistic
    Returns the sum of the natural logs for this collection of values.

    Uses JdkMath.log(double) to compute the logs. Therefore,

    • If any of values are < 0, the result is NaN.
    • If all values are non-negative and less than Double.POSITIVE_INFINITY, but at least one value is 0, the result is Double.NEGATIVE_INFINITY.
    • If both Double.POSITIVE_INFINITY and Double.NEGATIVE_INFINITY are among the values, the result is NaN.

    Note that this implementation is not synchronized. If multiple threads access an instance of this class concurrently, and at least one of the threads invokes the increment() or clear() method, it must be synchronized externally.