YELLOW: Fix float number type check

Issue-Ref: 3365
Issue-Url: https://af3-developer.fortiss.org/issues/3365Signed-off-by: Alexander Diewald <diewald@fortiss.org>

org.fortiss.tooling.base/src/org/fortiss/tooling/base/utils/.ratings

 AngleUtils.java 462551eae71738ff51f92c9906bff9a21a375d2b GREEN
 AnnotationUtils.java 197ceb5f39af6b96eb8f7025e3fe3b1b39c35d42 GREEN
-BaseMathUtils.java 8d26339a4410b59e6106fbaa47064b42fcc1f98a YELLOW
+BaseMathUtils.java 90712a1560f5b4cb9b7873a148303c970ded756d YELLOW
 BaseModelElementUtils.java b8775b7a462efc168cf79a017aa3377a782d10f6 GREEN
 DimensionUtils.java 0dc67f9de11a84e6e4c6e1eb627817dee91ff30a GREEN
 EllipseLayoutUtils.java 5c3a0126fdca5d5b4fb441694747e1cb0f49cd9f GREEN

org.fortiss.tooling.base/src/org/fortiss/tooling/base/utils/BaseMathUtils.java

@@ -228,10 +228,8 @@ public class BaseMathUtils {
 	 *            Number to test.
 	 * @return boolean if the given number is an floating point number.
 	 */
-	// TODO: This method does not check for the described floating point types. Is this on purpose?
 	public static boolean isFloatNumber(Number value) {
-		return(value instanceof Byte || value instanceof Short || value instanceof Integer ||
-				value instanceof Long || value instanceof BigInteger);
+		return value != null && isFloatNumber(value.getClass());
 	}
 
 	/**