public void testBandwidths() {
Matrix m=Matrix.create(6, 6);
assertEquals(0,m.upperBandwidth());
assertEquals(5,m.upperBandwidthLimit());
assertEquals(0,m.lowerBandwidth());
assertEquals(5,m.lowerBandwidthLimit());
m.getBand(-1).fill(1.0);
assertEquals(0,m.upperBandwidth());
assertEquals(1,m.lowerBandwidth());