fact.utils

Class ElementWise

java.lang.Object

fact.utils.ElementWise

public class ElementWise
extends Object

A collection of element-wise operations on double[] arrays with a scalar.

Constructor Summary

Constructors

Constructor and Description
ElementWise()

Method Summary

Modifier and Type	Method and Description
static double[]	add(double[] arr, double scalar) Add scalar to values in an array.
static double[]	addFirstToSecond(double[] arr1, double[] arr2) Add two arrays of same length.
static double[]	multiply(double[] arr, double scalar) Multiply values in an array with a scalar.
static double[]	subtractFirstFromSecond(double[] arr1, double[] arr2) Subtract two arrays of same length.

Methods inherited from class java.lang.Object

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

Constructor Detail

ElementWise

public ElementWise()

Method Detail

multiply

public static double[] multiply(double[] arr,
                                double scalar)

Multiply values in an array with a scalar.

Parameters:

arr - The input array [N]

scalar - A scalar to multiply the array with

Returns:

out A copy of arr [N], but elementwise multiplied with scalar

add

public static double[] add(double[] arr,
                           double scalar)

Add scalar to values in an array.

Parameters:

arr - The input array [N]

scalar - A scalar to be added to the array

Returns:

out A copy of arr [N], but element-wise added with scalar

addFirstToSecond

public static double[] addFirstToSecond(double[] arr1,
                                        double[] arr2)

Add two arrays of same length.

Parameters:

arr1 - First input array [N]

arr2 - Second input array [N]

Returns:

out The elementwise sum of arr1 and arr2.

subtractFirstFromSecond

public static double[] subtractFirstFromSecond(double[] arr1,
                                               double[] arr2)

Subtract two arrays of same length.

Parameters:

arr1 - First input array [N]

arr2 - Second input array [N]

Returns:

out The elementwise difference fo arr2 and arr1.