| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.math; |
| |
| |
| /** |
| * Interface representing <a href="http://mathworld.wolfram.com/Field.html">field</a> elements. |
| * @param <T> the type of the field elements |
| * @see Field |
| * @version $Revision: 811685 $ $Date: 2009-09-05 19:36:48 +0200 (sam. 05 sept. 2009) $ |
| * @since 2.0 |
| */ |
| public interface FieldElement<T> { |
| |
| /** Compute this + a. |
| * @param a element to add |
| * @return a new element representing this + a |
| */ |
| T add(T a); |
| |
| /** Compute this - a. |
| * @param a element to subtract |
| * @return a new element representing this - a |
| */ |
| T subtract(T a); |
| |
| /** Compute this × a. |
| * @param a element to multiply |
| * @return a new element representing this × a |
| */ |
| T multiply(T a); |
| |
| /** Compute this ÷ a. |
| * @param a element to add |
| * @return a new element representing this ÷ a |
| * @exception ArithmeticException if a is the zero of the |
| * additive operation (i.e. additive identity) |
| */ |
| T divide(T a) throws ArithmeticException; |
| |
| /** Get the {@link Field} to which the instance belongs. |
| * @return {@link Field} to which the instance belongs |
| */ |
| Field<T> getField(); |
| |
| } |