edu.umd.cs.psl.optimizer.NumericUtilities.java Source code

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Here is the source code for edu.umd.cs.psl.optimizer.NumericUtilities.java

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/*
 * This file is part of the PSL software.
 * Copyright 2011 University of Maryland
 *
 * Licensed 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 edu.umd.cs.psl.optimizer;

import com.google.common.base.Preconditions;

public class NumericUtilities {

    public static final double relaxedEpsilon = 1e-3;
    public static final double strictEpsilong = 1e-8;

    public static boolean equals(double val1, double val2) {
        return Math.abs(val1 - val2) < relaxedEpsilon;
    }

    public static boolean equals(double[] val1, double[] val2) {
        Preconditions.checkArgument(val1.length == val2.length);
        for (int i = 0; i < val1.length; i++) {
            if (!equals(val1[i], val2[i]))
                return false;
        }
        return true;
    }

}