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.regression; 18 19 import java.math.BigInteger; 20 import java.util.Random; 21 import com.google.caliper.Param; 22 import com.google.caliper.SimpleBenchmark; 23 24 public class BigIntegerBenchmark extends SimpleBenchmark { timeRandomDivision(int reps)25 public void timeRandomDivision(int reps) throws Exception { 26 Random r = new Random(); 27 BigInteger x = new BigInteger(1024, r); 28 BigInteger y = new BigInteger(1024, r); 29 for (int i = 0; i < reps; ++i) { 30 x.divide(y); 31 } 32 } 33 timeRandomGcd(int reps)34 public void timeRandomGcd(int reps) throws Exception { 35 Random r = new Random(); 36 BigInteger x = new BigInteger(1024, r); 37 BigInteger y = new BigInteger(1024, r); 38 for (int i = 0; i < reps; ++i) { 39 x.gcd(y); 40 } 41 } 42 timeRandomMultiplication(int reps)43 public void timeRandomMultiplication(int reps) throws Exception { 44 Random r = new Random(); 45 BigInteger x = new BigInteger(1024, r); 46 BigInteger y = new BigInteger(1024, r); 47 for (int i = 0; i < reps; ++i) { 48 x.multiply(y); 49 } 50 } 51 } 52