MatrixSumMatrixMatrix.java

/**
 * 
 */
package info.kalendra.matrixOps;

import java.security.InvalidParameterException;

import info.kalendra.matrix.Matrix;

/**
 * @author Eric Kalendra
 *
 */
public class MatrixSumMatrixMatrix {
	
	public Matrix sum(Matrix x, Matrix y, Matrix z){
		//check dimensions
		if(x.getDimensionRows() != y.getDimensionRows()){
			throw new InvalidParameterException("Row Dimensions don't match");
		}
		if(x.getDimensionCols() != y.getDimensionCols()){
			throw new InvalidParameterException("Col Dimensions don't match");
		}
		//set the dimensions of z
		z.setDimensions(x.getDimensionRows(), x.getDimensionCols());
		//push the data into z
		for(int i = 0; i<x.getDimensionRows();i++){
			for(int j =0; j <x.getDimensionCols(); j++){
				z.setValue(i, j, x.getValue(i, j) + y.getValue(i, j));
			}
		}
		return z;
	}
}