public void testClear() throws Throwable
{
double matrixData[] = {1.0,2.0,3.0,4.0};
Matrix matrix = Matrix.createColumnMatrix(matrixData);
matrix.clear();
TestCase.assertEquals(matrix.get(0, 0), 0.0);
TestCase.assertEquals(matrix.get(1, 0), 0.0);
TestCase.assertEquals(matrix.get(2, 0), 0.0);
TestCase.assertEquals(matrix.get(3, 0), 0.0);
}