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Commons Math example source code file (RandomGenerator.java)
The Commons Math RandomGenerator.java source code/* * 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.math.random; /** * Interface extracted from <code>java.util.Random. This interface is * implemented by {@link AbstractRandomGenerator}. * * @since 1.1 * @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $ */ public interface RandomGenerator { /** * Sets the seed of the underyling random number generator using an * <code>int seed. * <p>Sequences of values generated starting with the same seeds * should be identical. * </p> * @param seed the seed value */ void setSeed(int seed); /** * Sets the seed of the underyling random number generator using an * <code>int array seed. * <p>Sequences of values generated starting with the same seeds * should be identical. * </p> * @param seed the seed value */ void setSeed(int[] seed); /** * Sets the seed of the underyling random number generator using a * <code>long seed. * <p>Sequences of values generated starting with the same seeds * should be identical. * </p> * @param seed the seed value */ void setSeed(long seed); /** * Generates random bytes and places them into a user-supplied * byte array. The number of random bytes produced is equal to * the length of the byte array. * * @param bytes the non-null byte array in which to put the * random bytes */ void nextBytes(byte[] bytes); /** * Returns the next pseudorandom, uniformly distributed <code>int * value from this random number generator's sequence. * All 2<font size="-1">32 possible int values * should be produced with (approximately) equal probability. * * @return the next pseudorandom, uniformly distributed <code>int * value from this random number generator's sequence */ int nextInt(); /** * Returns a pseudorandom, uniformly distributed <tt>int value * between 0 (inclusive) and the specified value (exclusive), drawn from * this random number generator's sequence. * * @param n the bound on the random number to be returned. Must be * positive. * @return a pseudorandom, uniformly distributed <tt>int * value between 0 (inclusive) and n (exclusive). * @throws IllegalArgumentException if n is not positive. */ int nextInt(int n); /** * Returns the next pseudorandom, uniformly distributed <code>long * value from this random number generator's sequence. All * 2<font size="-1">64 possible long values * should be produced with (approximately) equal probability. * * @return the next pseudorandom, uniformly distributed <code>long *value from this random number generator's sequence */ long nextLong(); /** * Returns the next pseudorandom, uniformly distributed * <code>boolean value from this random number generator's * sequence. * * @return the next pseudorandom, uniformly distributed * <code>boolean value from this random number generator's * sequence */ boolean nextBoolean(); /** * Returns the next pseudorandom, uniformly distributed <code>float * value between <code>0.0 and Other Commons Math examples (source code examples)Here is a short list of links related to this Commons Math RandomGenerator.java source code file: |
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