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Diffstat (limited to 'src/main/java/org/apache/commons/math3/linear/NonPositiveDefiniteOperatorException.java')
-rw-r--r-- | src/main/java/org/apache/commons/math3/linear/NonPositiveDefiniteOperatorException.java | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/main/java/org/apache/commons/math3/linear/NonPositiveDefiniteOperatorException.java b/src/main/java/org/apache/commons/math3/linear/NonPositiveDefiniteOperatorException.java new file mode 100644 index 0000000..6bfe001 --- /dev/null +++ b/src/main/java/org/apache/commons/math3/linear/NonPositiveDefiniteOperatorException.java @@ -0,0 +1,40 @@ +/* + * 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.math3.linear; + +import org.apache.commons.math3.exception.MathIllegalArgumentException; +import org.apache.commons.math3.exception.util.LocalizedFormats; + +/** + * Exception to be thrown when a symmetric, definite positive {@link RealLinearOperator} is + * expected. Since the coefficients of the matrix are not accessible, the most general definition is + * used to check that {@code A} is not positive definite, i.e. there exists {@code x} such that + * {@code x' A x <= 0}. In the terminology of this exception, {@code A} is the "offending" linear + * operator and {@code x} the "offending" vector. + * + * @since 3.0 + */ +public class NonPositiveDefiniteOperatorException extends MathIllegalArgumentException { + /** Serializable version Id. */ + private static final long serialVersionUID = 917034489420549847L; + + /** Creates a new instance of this class. */ + public NonPositiveDefiniteOperatorException() { + super(LocalizedFormats.NON_POSITIVE_DEFINITE_OPERATOR); + } +} |