@Test public void testNonZeroCount() {
AVector v=Vectorz.createUniformRandomVector(5);
v.add(1);
assertEquals(v.length(),v.nonZeroCount());
v.scale(0.0);
assertEquals(0,v.nonZeroCount());
}
@Test public void testZeroPaddedReshape() {
assertTrue(Vector0.INSTANCE.reshape(1,1).asVector().isZero());