| /* |
| * 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.rng.core; |
| |
| import java.util.Arrays; |
| |
| import org.apache.commons.rng.RandomProviderState; |
| |
| /** |
| * Wraps the internal state of a generator instance. |
| * Its purpose is to store all the data needed to recover the same |
| * state in order to restart a sequence where it left off. |
| * External code should not try to modify the data contained in instances |
| * of this class. |
| * |
| * @since 1.0 |
| */ |
| public class RandomProviderDefaultState implements RandomProviderState { |
| /** Internal state. */ |
| private final byte[] state; |
| |
| /** |
| * Initializes an instance. |
| * The contents of the {@code state} argument is unspecified, and is |
| * guaranteed to be valid only if it was generated by implementations |
| * provided by this library. |
| * |
| * @param state Mapping of all the data which an implementation of |
| * {@link org.apache.commons.rng.UniformRandomProvider} needs in order |
| * to reset its internal state. |
| */ |
| public RandomProviderDefaultState(byte[] state) { |
| this.state = Arrays.copyOf(state, state.length); |
| } |
| |
| /** |
| * @return the internal state. |
| */ |
| public byte[] getState() { |
| return Arrays.copyOf(state, state.length); |
| } |
| } |