1 | /*
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more
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3 | * contributor license agreements. See the NOTICE file distributed with
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4 | * this work for additional information regarding copyright ownership.
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0
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6 | * (the "License"); you may not use this file except in compliance with
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7 | * the License. You may obtain a copy of the License at
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8 | *
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9 | * http://www.apache.org/licenses/LICENSE-2.0
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10 | *
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11 | * Unless required by applicable law or agreed to in writing, software
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12 | * distributed under the License is distributed on an "AS IS" BASIS,
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 | * See the License for the specific language governing permissions and
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15 | * limitations under the License.
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16 | */
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17 |
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18 | package agents.anac.y2019.harddealer.math3.linear;
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19 |
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20 | import agents.anac.y2019.harddealer.math3.exception.MathIllegalArgumentException;
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21 | import agents.anac.y2019.harddealer.math3.exception.util.LocalizedFormats;
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22 |
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23 | /**
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24 | * Exception to be thrown when a symmetric, definite positive
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25 | * {@link RealLinearOperator} is expected.
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26 | * Since the coefficients of the matrix are not accessible, the most
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27 | * general definition is used to check that {@code A} is not positive
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28 | * definite, i.e. there exists {@code x} such that {@code x' A x <= 0}.
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29 | * In the terminology of this exception, {@code A} is the "offending"
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30 | * linear operator and {@code x} the "offending" vector.
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31 | *
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32 | * @since 3.0
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33 | */
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34 | public class NonPositiveDefiniteOperatorException
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35 | extends MathIllegalArgumentException {
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36 | /** Serializable version Id. */
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37 | private static final long serialVersionUID = 917034489420549847L;
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38 |
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39 | /** Creates a new instance of this class. */
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40 | public NonPositiveDefiniteOperatorException() {
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41 | super(LocalizedFormats.NON_POSITIVE_DEFINITE_OPERATOR);
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42 | }
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43 | }
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