1 /*
2  * Copyright (C) 2010 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package benchmarks;
18 
19 /**
20  * How much do various kinds of multiplication cost?
21  */
22 public class MultiplicationBenchmark {
timeMultiplyIntByConstant10(int reps)23     public int timeMultiplyIntByConstant10(int reps) {
24         int result = 1;
25         for (int i = 0; i < reps; ++i) {
26             result *= 10;
27         }
28         return result;
29     }
timeMultiplyIntByConstant8(int reps)30     public int timeMultiplyIntByConstant8(int reps) {
31         int result = 1;
32         for (int i = 0; i < reps; ++i) {
33             result *= 8;
34         }
35         return result;
36     }
timeMultiplyIntByVariable10(int reps)37     public int timeMultiplyIntByVariable10(int reps) {
38         int result = 1;
39         int factor = 10;
40         for (int i = 0; i < reps; ++i) {
41             result *= factor;
42         }
43         return result;
44     }
timeMultiplyIntByVariable8(int reps)45     public int timeMultiplyIntByVariable8(int reps) {
46         int result = 1;
47         int factor = 8;
48         for (int i = 0; i < reps; ++i) {
49             result *= factor;
50         }
51         return result;
52     }
53 }
54