@Test
public void testExponentGrid() {

    final Grid grid = lut1.getExponentGrid5();
    assertNotNull(grid);
    assertEquals(0.27232966f, (float) grid.getSampleDouble(0, 4), 0.0f);
    assertEquals(0.10357625f, (float) grid.getSampleDouble(39, 3), 0.0f);
}