1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.math.random; 19 20 /** 21 * This interface represent a normalized random generator for 22 * scalars. 23 * Normalized generator provide null mean and unit standard deviation scalars. 24 * @version $Revision: 811786 $ $Date: 2009-09-06 11:36:08 +0200 (dim. 06 sept. 2009) $ 25 * @since 1.2 26 */ 27 public interface NormalizedRandomGenerator { 28 29 /** Generate a random scalar with null mean and unit standard deviation. 30 * <p>This method does <strong>not</strong> specify the shape of the 31 * distribution, it is the implementing class that provides it. The 32 * only contract here is to generate numbers with null mean and unit 33 * standard deviation.</p> 34 * @return a random scalar with null mean and unit standard deviation 35 */ 36 double nextNormalizedDouble(); 37 38 } 39