commons-math-legacy-exception/src/main/java/org/apache/commons/math4/legacy/exception/NotFiniteNumberException.java

/*
 * 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.exception;

import org.apache.commons.math4.legacy.exception.util.Localizable;
import org.apache.commons.math4.legacy.exception.util.LocalizedFormats;

/**
 * Exception to be thrown when a number is not finite.
 *
 * @since 3.0
 */
public class NotFiniteNumberException extends MathIllegalNumberException {
    /** Serializable version Id. */
    private static final long serialVersionUID = -6100997100383932834L;

    /**
     * Construct the exception.
     *
     * @param wrong Value that is infinite or NaN.
     * @param args Optional arguments.
     */
    public NotFiniteNumberException(Number wrong,
                                    Object... args) {
        this(LocalizedFormats.NOT_FINITE_NUMBER, wrong, args);
    }

    /**
     * Construct the exception with a specific context.
     *
     * @param specific Specific context pattern.
     * @param wrong Value that is infinite or NaN.
     * @param args Optional arguments.
     */
    public NotFiniteNumberException(Localizable specific,
                                    Number wrong,
                                    Object... args) {
        super(specific, wrong, args);
    }

    /**
     * Check that the argument is a real number.
     *
     * @param x Argument.
     * @throws NotFiniteNumberException if {@code x} is not a
     * finite real number.
     */
    public static void check(final double x) {
        if (Double.isInfinite(x) ||
            Double.isNaN(x)) {
            throw new NotFiniteNumberException(x);
        }
    }

    /**
     * Check that all the elements are real numbers.
     *
     * @param val Arguments.
     * @throws NotFiniteNumberException if any values of the array is not a
     * finite real number.
     */
    public static void check(final double[] val) {
        for (int i = 0; i < val.length; i++) {
            final double x = val[i];
            if (Double.isInfinite(x) ||
                Double.isNaN(x)) {
                throw new NotFiniteNumberException(LocalizedFormats.ARRAY_ELEMENT, x, i);
            }
        }
    }
}