@Test
public void hoecherNegativWert() {
// rech = (Rechner) new Addiere();
assertEquals(-2147483647, rech.rechne(-1073741823.5, -1073741823.5), 0.0f);
}
@Test
public void hoecherPositivWert() {
assertEquals(2147483647, rech.rechne(1073741823.5, 1073741823.5), 0.0f);
}