133 lines
4.3 KiB
Java
133 lines
4.3 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.openjdk.bench.java.math;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Fork;
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import org.openjdk.jmh.annotations.Measurement;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OperationsPerInvocation;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.Param;
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import org.openjdk.jmh.annotations.Warmup;
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import org.openjdk.jmh.infra.Blackhole;
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import java.math.BigInteger;
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import java.util.Random;
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import java.util.concurrent.TimeUnit;
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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@Warmup(iterations = 5, time = 1)
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@Measurement(iterations = 5, time = 1)
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@Fork(value = 3)
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public class BigIntegerSquareRoot {
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private BigInteger[] xsArray, sArray, mArray, lArray, xlArray;
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private static final int TESTSIZE = 1000;
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@Setup
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public void setup() {
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Random r = new Random(1123);
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xsArray = new BigInteger[TESTSIZE]; /*
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* Each array entry is atmost 64 bits
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* in size
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*/
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sArray = new BigInteger[TESTSIZE]; /*
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* Each array entry is atmost 256 bits
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* in size
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*/
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mArray = new BigInteger[TESTSIZE]; /*
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* Each array entry is atmost 1024 bits
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* in size
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*/
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lArray = new BigInteger[TESTSIZE]; /*
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* Each array entry is atmost 4096 bits
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* in size
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*/
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xlArray = new BigInteger[TESTSIZE]; /*
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* Each array entry is atmost 16384 bits
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* in size
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*/
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for (int i = 0; i < TESTSIZE; i++) {
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xsArray[i] = new BigInteger(r.nextInt(64), r);
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sArray[i] = new BigInteger(r.nextInt(256), r);
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mArray[i] = new BigInteger(r.nextInt(1024), r);
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lArray[i] = new BigInteger(r.nextInt(4096), r);
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xlArray[i] = new BigInteger(r.nextInt(16384), r);
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}
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}
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/** Test BigInteger.sqrt() with numbers long at most 64 bits */
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@Benchmark
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@OperationsPerInvocation(TESTSIZE)
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public void testSqrtXS(Blackhole bh) {
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for (BigInteger s : xsArray) {
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bh.consume(s.sqrt());
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}
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}
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/** Test BigInteger.sqrt() with numbers long at most 256 bits */
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@Benchmark
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@OperationsPerInvocation(TESTSIZE)
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public void testSqrtS(Blackhole bh) {
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for (BigInteger s : sArray) {
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bh.consume(s.sqrt());
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}
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}
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/** Test BigInteger.sqrt() with numbers long at most 1024 bits */
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@Benchmark
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@OperationsPerInvocation(TESTSIZE)
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public void testSqrtM(Blackhole bh) {
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for (BigInteger s : mArray) {
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bh.consume(s.sqrt());
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}
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}
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/** Test BigInteger.sqrt() with numbers long at most 4096 bits */
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@Benchmark
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@OperationsPerInvocation(TESTSIZE)
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public void testSqrtL(Blackhole bh) {
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for (BigInteger s : lArray) {
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bh.consume(s.sqrt());
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}
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}
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/** Test BigInteger.sqrt() with numbers long at most 16384 bits */
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@Benchmark
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@OperationsPerInvocation(TESTSIZE)
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public void testSqrtXL(Blackhole bh) {
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for (BigInteger s : xlArray) {
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bh.consume(s.sqrt());
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}
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}
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}
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