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in repository https://gitbox.apache.org/repos/asf/commons-math.git
commit c7b36439a2fe15506c4015ca770d52326b55b20c
Author: Gilles Sadowski <gillese...@gmail.com>
AuthorDate: Fri Jun 4 11:03:45 2021 +0200
Obsolete class.
Benchmarking is performed in "Commons RNG".
---
.../rng/RandomNumberGeneratorBenchmark.java | 160 ---------------------
1 file changed, 160 deletions(-)
diff --git
a/src/userguide/java/org/apache/commons/math4/userguide/rng/RandomNumberGeneratorBenchmark.java
b/src/userguide/java/org/apache/commons/math4/userguide/rng/RandomNumberGeneratorBenchmark.java
deleted file mode 100644
index acb70e1..0000000
---
a/src/userguide/java/org/apache/commons/math4/userguide/rng/RandomNumberGeneratorBenchmark.java
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.commons.math4.userguide.rng;
-
-import java.util.List;
-import java.util.ArrayList;
-import java.util.Random;
-
-import org.apache.commons.rng.simple.RandomSource;
-import org.apache.commons.rng.UniformRandomProvider;
-
-import org.apache.commons.math4.random.RandomGenerator;
-import org.apache.commons.math4.PerfTestUtils;
-
-/**
- * Benchmark of the RNGs.
- */
-public class RandomNumberGeneratorBenchmark {
- /** Number of loops over the operations to be benchmarked. */
- private static final int NUM_CALLS = 1_000_000;
- /** Number of runs for computing the statistics. */
- private static final int NUM_STATS = 500;
- /** Report formatting. */
- private static final int MAX_NAME_WIDTH = 45;
-
- /**
- * Program's entry point.
- *
- * @param args List of {@link RandomSource RNG indentifiers}.
- */
- public static void main(String[] args) throws Exception {
- final RandomNumberGeneratorBenchmark app = new
RandomNumberGeneratorBenchmark();
-
- printEnv();
-
- final List<UniformRandomProvider> rngList = new ArrayList<>();
- for (int i = 0; i < args.length; i++) {
- rngList.add(RandomSource.create(RandomSource.valueOf(args[i])));
- }
-
- app.benchmark(rngList);
- }
-
- /**
- * Test all generators.
- * The reference is JDK's "Random".
- *
- * @param list List of generators to benchmark.
- */
- public void benchmark(List<UniformRandomProvider> rngList) {
- // Reference is JDK's "Random".
- final Random jdk = new Random();
-
- // List of benchmarked codes.
- final PerfTestUtils.RunTest[] candidates = new
PerfTestUtils.RunTest[rngList.size() + 1];
-
- // "nextInt()" benchmark.
-
- candidates[0] = new PerfTestUtils.RunTest(jdk.toString()) {
- @Override
- public Double call() throws Exception {
- return (double) jdk.nextInt();
- }
- };
- for (int i = 0; i < rngList.size(); i++) {
- final UniformRandomProvider rng = rngList.get(i);
-
- candidates[i + 1] = new PerfTestUtils.RunTest(rng.toString()) {
- @Override
- public Double call() throws Exception {
- return (double) rng.nextInt();
- }
- };
- }
-
- PerfTestUtils.timeAndReport("nextInt()",
- MAX_NAME_WIDTH,
- NUM_CALLS,
- NUM_STATS,
- false,
- candidates);
-
- // "nextDouble()" benchmark.
-
- candidates[0] = new PerfTestUtils.RunTest(jdk.toString()) {
- @Override
- public Double call() throws Exception {
- return (double) jdk.nextDouble();
- }
- };
- for (int i = 0; i < rngList.size(); i++) {
- final UniformRandomProvider rng = rngList.get(i);
-
- candidates[i + 1] = new PerfTestUtils.RunTest(rng.toString()) {
- @Override
- public Double call() throws Exception {
- return rng.nextDouble();
- }
- };
- }
-
- PerfTestUtils.timeAndReport("nextDouble()",
- MAX_NAME_WIDTH,
- NUM_CALLS,
- NUM_STATS,
- false,
- candidates);
-
- // "nextLong()" benchmark.
-
- candidates[0] = new PerfTestUtils.RunTest(jdk.toString()) {
- @Override
- public Double call() throws Exception {
- return (double) jdk.nextLong();
- }
- };
- for (int i = 0; i < rngList.size(); i++) {
- final UniformRandomProvider rng = rngList.get(i);
-
- candidates[i + 1] = new PerfTestUtils.RunTest(rng.toString()) {
- @Override
- public Double call() throws Exception {
- return (double) rng.nextLong();
- }
- };
- }
-
- PerfTestUtils.timeAndReport("nextLong()",
- MAX_NAME_WIDTH,
- NUM_CALLS,
- NUM_STATS,
- false,
- candidates);
- }
-
- /**
- * Print environment.
- */
- private static void printEnv() {
- final String sep = " ";
- System.out.println("Java" + sep + System.getProperty("java.version"));
- System.out.println("Runtime" + sep +
System.getProperty("java.runtime.version", "?"));
- System.out.println("JVM" + sep + System.getProperty("java.vm.name") +
- sep + System.getProperty("java.vm.version"));
- }
-}
