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/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
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package org.apache.poi.ss.formula.functions;
/**
* Implementation of Excel function SUMX2PY2()
*
* Calculates the sum of squares in two arrays of the same size.
* Syntax:
* SUMX2PY2(arrayX, arrayY)
*
* result = Σi: 0..n(xi2+yi2)
*
* @author Amol S. Deshmukh < amolweb at ya hoo dot com >
*/
public final class Sumx2py2 extends XYNumericFunction {
private static final Accumulator XSquaredPlusYSquaredAccumulator = new Accumulator() {
public double accumulate(double x, double y) {
return x * x + y * y;
}
};
protected Accumulator createAccumulator() {
return XSquaredPlusYSquaredAccumulator;
}
}