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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    *      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  package org.apache.commons.math3.exception;
18  
19  import org.apache.commons.math3.exception.util.LocalizedFormats;
20  
21  /**
22   * Exception to be thrown when a number is not a number.
23   *
24   * @since 3.1
25   * @version $Id: NotANumberException.java 1504729 2013-07-18 23:54:52Z sebb $
26   */
27  public class NotANumberException extends MathIllegalNumberException {
28      /** Serializable version Id. */
29      private static final long serialVersionUID = 20120906L;
30  
31      /**
32       * Construct the exception.
33       */
34      public NotANumberException() {
35          super(LocalizedFormats.NAN_NOT_ALLOWED, Double.valueOf(Double.NaN));
36      }
37  
38  }