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Posted to commits@commons.apache.org by er...@apache.org on 2016/05/29 21:01:45 UTC
[20/32] [math] MATH-1366
MATH-1366
Obsolete class removed (replaced by method "asUniformRandomProvider" in "RandomUtils").
Project: http://git-wip-us.apache.org/repos/asf/commons-math/repo
Commit: http://git-wip-us.apache.org/repos/asf/commons-math/commit/34eba813
Tree: http://git-wip-us.apache.org/repos/asf/commons-math/tree/34eba813
Diff: http://git-wip-us.apache.org/repos/asf/commons-math/diff/34eba813
Branch: refs/heads/develop
Commit: 34eba8132225fcdae317a26dd178901bf9fd437f
Parents: 47c41fe
Author: Gilles <er...@apache.org>
Authored: Fri May 20 14:32:30 2016 +0200
Committer: Gilles <er...@apache.org>
Committed: Fri May 20 14:32:30 2016 +0200
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.../math4/random/RandomGeneratorFactory.java | 133 -------------------
1 file changed, 133 deletions(-)
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http://git-wip-us.apache.org/repos/asf/commons-math/blob/34eba813/src/main/java/org/apache/commons/math4/random/RandomGeneratorFactory.java
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diff --git a/src/main/java/org/apache/commons/math4/random/RandomGeneratorFactory.java b/src/main/java/org/apache/commons/math4/random/RandomGeneratorFactory.java
deleted file mode 100644
index 287b7ad..0000000
--- a/src/main/java/org/apache/commons/math4/random/RandomGeneratorFactory.java
+++ /dev/null
@@ -1,133 +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.random;
-
-import java.util.Random;
-
-import org.apache.commons.math4.exception.NotStrictlyPositiveException;
-
-/**
- * Utilities for creating {@link RandomGenerator} instances.
- *
- * @since 3.3
- */
-public class RandomGeneratorFactory {
- /**
- * Class contains only static methods.
- */
- private RandomGeneratorFactory() {}
-
- /**
- * Creates a {@link RandomGenerator} instance that wraps a
- * {@link Random} instance.
- *
- * @param rng JDK {@link Random} instance that will generate the
- * the random data.
- * @return the given RNG, wrapped in a {@link RandomGenerator}.
- */
- public static RandomGenerator createRandomGenerator(final Random rng) {
- return new RandomGenerator() {
- /** {@inheritDoc} */
- @Override
- public void setSeed(int seed) {
- rng.setSeed((long) seed);
- }
-
- /** {@inheritDoc} */
- @Override
- public void setSeed(int[] seed) {
- rng.setSeed(convertToLong(seed));
- }
-
- /** {@inheritDoc} */
- @Override
- public void setSeed(long seed) {
- rng.setSeed(seed);
- }
-
- /** {@inheritDoc} */
- @Override
- public void nextBytes(byte[] bytes) {
- rng.nextBytes(bytes);
- }
-
- /** {@inheritDoc} */
- @Override
- public int nextInt() {
- return rng.nextInt();
- }
-
- /** {@inheritDoc} */
- @Override
- public int nextInt(int n) {
- if (n <= 0) {
- throw new NotStrictlyPositiveException(n);
- }
- return rng.nextInt(n);
- }
-
- /** {@inheritDoc} */
- @Override
- public long nextLong() {
- return rng.nextLong();
- }
-
- /** {@inheritDoc} */
- @Override
- public boolean nextBoolean() {
- return rng.nextBoolean();
- }
-
- /** {@inheritDoc} */
- @Override
- public float nextFloat() {
- return rng.nextFloat();
- }
-
- /** {@inheritDoc} */
- @Override
- public double nextDouble() {
- return rng.nextDouble();
- }
-
- /** {@inheritDoc} */
- @Override
- public double nextGaussian() {
- return rng.nextGaussian();
- }
- };
- }
-
- /**
- * Converts seed from one representation to another.
- *
- * @param seed Original seed.
- * @return the converted seed.
- */
- public static long convertToLong(int[] seed) {
- // The following number is the largest prime that fits
- // in 32 bits (i.e. 2^32 - 5).
- final long prime = 4294967291l;
-
- long combined = 0l;
- for (int s : seed) {
- combined = combined * prime + s;
- }
-
- return combined;
- }
-}