Package org.apache.commons.numbers.examples.jmh.core

Class LinearCombinations.BaseLinearCombination

java.lang.Object

org.apache.commons.numbers.examples.jmh.core.LinearCombinations.BaseLinearCombination

All Implemented Interfaces:

LinearCombination.ND

Direct Known Subclasses:

LinearCombinations.Dekker, LinearCombinations.Dot2s, LinearCombinations.DotK, LinearCombinations.Exact, LinearCombinations.ExtendedPrecision

Enclosing class:

LinearCombinations

public abstract static class LinearCombinations.BaseLinearCombination
extends Object
implements LinearCombination.ND

Base class to compute a linear combination with high accuracy. Contains common code for computing short combinations and computing the standard precision sum of products.

Constructor Summary

Constructors

Constructor	Description
BaseLinearCombination()

Method Summary

Modifier and Type	Method	Description
protected abstract double	computeValue(double[] a, double[] b)	Compute the sum of the products of two sequences of factors with high accuracy.
double	value(double[] a, double[] b)	Compute the sum of the products of two sequences of factors.

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseLinearCombination

public BaseLinearCombination()

Method Detail

value

public double value(double[] a,
                    double[] b)

Compute the sum of the products of two sequences of factors.

Specified by:

value in interface LinearCombination.ND

Parameters:

a - Factors.

b - Factors.

Returns:

\( \sum_i a_i b_i \).

computeValue

protected abstract double computeValue(double[] a,
                                       double[] b)

Compute the sum of the products of two sequences of factors with high accuracy. The input arrays will have a length of at least 2; the lengths will be the same.

Parameters:

a - Factors.

b - Factors.

Returns:

\( \sum_i a_i b_i \).