DoubleUtil.java

/**
 * diqube: Distributed Query Base.
 *
 * Copyright (C) 2015 Bastian Gloeckle
 *
 * This file is part of diqube.
 *
 * diqube is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.diqube.util;

/**
 * Simple util class for handling {@link Double}s.
 *
 * @author Bastian Gloeckle
 */
public class DoubleUtil {
  /**
   * Compares to double values and returns true if they should be treated as being equal.
   */
  public static boolean equals(double a, double b) {
    return a == b || Math.abs(a - b) < 1e-100 || (Double.isNaN(a) && Double.isNaN(b));
  }
}