@Test
public void testExec() {

    NodeValue v1 = NodeValue.makeDouble(25);
    NodeValue v2 = NodeValue.makeDouble(45);
    NodeValue v3 = NodeValue.makeDouble(75);
    NodeValue v4 = NodeValue.makeDouble(100);
    AngleDegreesFF instance = new AngleDegreesFF();
    NodeValue expResult = NodeValue.makeDouble(42.273689);
    NodeValue result = instance.exec(v1, v2, v3, v4);
    assertEquals(expResult, result);
}