001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.geometry.core.internal;
018
019/** Represents a function that accepts three double values and returns
020 * a result.
021 * @param <T> The function return type.
022 */
023@FunctionalInterface
024public interface DoubleFunction3N<T> {
025
026    /** Apply the function and return the result.
027     * @param n1 first function argument
028     * @param n2 second function argument
029     * @param n3 third function argument
030     * @return the function result
031     */
032    T apply(double n1, double n2, double n3);
033}