Here you can find the source of abs(double[] array)
public static void abs(double[] array)
//package com.java2s; /**//from w ww . j a v a 2 s. c o m * This file is part of the Java Machine Learning Library * * The Java Machine Learning Library is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * The Java Machine Learning Library 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with the Java Machine Learning Library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * Copyright (c) 2006-2009, Thomas Abeel * * Project: http://java-ml.sourceforge.net/ * */ public class Main { public static void abs(double[] array) { for (int i = 0; i < array.length; i++) array[i] = Math.abs(array[i]); } }