1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.geometry.core.internal; 18 19 /** Represents a function that accepts three double values and returns 20 * a result. 21 * @param <T> The function return type. 22 */ 23 @FunctionalInterface 24 public interface DoubleFunction3N<T> { 25 26 /** Apply the function and return the result. 27 * @param n1 first function argument 28 * @param n2 second function argument 29 * @param n3 third function argument 30 * @return the function result 31 */ 32 T apply(double n1, double n2, double n3); 33 }