unrolledLoop.java

private static double[] loopUnrolling2(double[][] matrix1, double[] vector1) {
	double[] result = new double[vector1.length];

	for (int i = 0; i < matrix1.length; i++) {
		result[i] += matrix1[i][0] * vector1[0];
		result[i] += matrix1[i][1] * vector1[1];
		result[i] += matrix1[i][2] * vector1[2];
		// and maybe it will expand even further - e.g. 4 iterations, thus
		// adding code to fix the indexing
		// which we would waste more time doing correctly and efficiently
	}

	return result;
}