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.imaging.internal;
18
19 import java.util.Arrays;
20
21 /**
22 * Provides safe arithmetic operations to avoid, for example, numeric overflows.
23 *
24 * @since 1.0-alpha4
25 */
26 public final class SafeOperations {
27
28 /**
29 * Applies {@link Math#addExact(int, int)} to a variable length array of integers.
30 *
31 * @param values variable length array of integers.
32 * @return the values safely added.
33 */
34 public static int add(final int... values) {
35 if (values == null || values.length < 2) {
36 throw new IllegalArgumentException("You must provide at least two elements to be added");
37 }
38 return Arrays.stream(values).reduce(0, Math::addExact);
39 }
40
41 private SafeOperations() {
42 }
43
44 }