@Test
public void testMul() {

	byte[] one = new byte[32];
	one[31] = 0x1; // 0x0000000000000000000000000000000000000000000000000000000000000001
	byte[] two = new byte[32];
	two[11] = 0x1; // 0x0000000000000000000000010000000000000000000000000000000000000000
	DataWord x = new DataWord(one);// System.out.println(x.value());
	DataWord y = new DataWord(two);// System.out.println(y.value());
	x.mul(y);
	assertEquals(32, y.getData().length);
	assertEquals("0000000000000000000000010000000000000000000000000000000000000000", Hex.toHexString(y.getData()));
}