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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    *      https://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  /*
19   * This is not the original file distributed by the Apache Software Foundation
20   * It has been modified by the Hipparchus project
21   */
22  
23  package org.hipparchus.random;
24  
25  /**
26   * This interface represent a normalized random generator for
27   * scalars.
28   * Normalized generator provide null mean and unit standard deviation scalars.
29   */
30  public interface NormalizedRandomGenerator {
31  
32    /** Generate a random scalar with null mean and unit standard deviation.
33     * <p>This method does <strong>not</strong> specify the shape of the
34     * distribution, it is the implementing class that provides it. The
35     * only contract here is to generate numbers with null mean and unit
36     * standard deviation.</p>
37     * @return a random scalar with null mean and unit standard deviation
38     */
39    double nextNormalizedDouble();
40  
41  }