function testMakeHankel()
{
$data = array(array(1, 2, 3, 3), array(2, 3, 3, 5), array(3, 3, 5, 7));
$c = array(1, 2, 3);
$r = array(1, 3, 5, 7);
$res = new Math_Matrix($data);
$hankel = Math_Matrix::makeHankel($c, $r);
$this->assertEquals($res->toString(), $hankel->toString());
}