001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.math3.random; 019 020/** 021 * This interface represent a normalized random generator for 022 * scalars. 023 * Normalized generator provide null mean and unit standard deviation scalars. 024 * @version $Id: NormalizedRandomGenerator.java 1416643 2012-12-03 19:37:14Z tn $ 025 * @since 1.2 026 */ 027public interface NormalizedRandomGenerator { 028 029 /** Generate a random scalar with null mean and unit standard deviation. 030 * <p>This method does <strong>not</strong> specify the shape of the 031 * distribution, it is the implementing class that provides it. The 032 * only contract here is to generate numbers with null mean and unit 033 * standard deviation.</p> 034 * @return a random scalar with null mean and unit standard deviation 035 */ 036 double nextNormalizedDouble(); 037 038}