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: 620312 $ $Date: 2008-02-10 12:28:59 -0700 (Sun, 10 Feb 2008) $
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 public double nextNormalizedDouble();
37
38 }