| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.math4.legacy.linear; |
| |
| import org.apache.commons.math4.legacy.exception.MathIllegalArgumentException; |
| import org.apache.commons.math4.legacy.exception.util.LocalizedFormats; |
| |
| /** |
| * Exception to be thrown when a self-adjoint {@link RealLinearOperator} |
| * is expected. |
| * Since the coefficients of the matrix are not accessible, the most |
| * general definition is used to check that A is not self-adjoint, i.e. |
| * there exist x and y such as {@code | x' A y - y' A x | >= eps}, |
| * where {@code eps} is a user-specified tolerance, and {@code x'} |
| * denotes the transpose of {@code x}. |
| * In the terminology of this exception, {@code A} is the "offending" |
| * linear operator, {@code x} and {@code y} are the first and second |
| * "offending" vectors, respectively. |
| * |
| * @since 3.0 |
| */ |
| public class NonSelfAdjointOperatorException |
| extends MathIllegalArgumentException { |
| /** Serializable version Id. */ |
| private static final long serialVersionUID = 1784999305030258247L; |
| |
| /** Creates a new instance of this class. */ |
| public NonSelfAdjointOperatorException() { |
| super(LocalizedFormats.NON_SELF_ADJOINT_OPERATOR); |
| } |
| } |