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 a single double value and returns 020 * a result. 021 * @param <T> The function return type. 022 */ 023@FunctionalInterface 024public interface DoubleFunction1N<T> { 025 026 /** Apply the function and return the result. 027 * @param n the function argument 028 * @return the function result 029 */ 030 T apply(double n); 031}