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.imaging.internal; 018 019import java.util.Arrays; 020 021/** 022 * Provides safe arithmetic operations to avoid, for example, numeric overflows. 023 * 024 * @since 1.0-alpha4 025 */ 026public final class SafeOperations { 027 028 /** 029 * Applies {@link Math#addExact(int, int)} to a variable length array of integers. 030 * 031 * @param values variable length array of integers. 032 * @return the values safely added. 033 */ 034 public static int add(final int... values) { 035 if (values == null || values.length < 2) { 036 throw new IllegalArgumentException("You must provide at least two elements to be added"); 037 } 038 return Arrays.stream(values).reduce(0, Math::addExact); 039 } 040 041 private SafeOperations() { 042 } 043 044}