Here you can find the source of gauss(final double mean, final double sigma, final double x)
public static final double gauss(final double mean, final double sigma, final double x)
//package com.java2s; /*//from w w w . ja v a2 s. c o m * Copyright (C) 2008-2015 by Holger Arndt * * This file is part of the Universal Java Matrix Package (UJMP). * See the NOTICE file distributed with this work for additional * information regarding copyright ownership and licensing. * * UJMP is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * UJMP 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with UJMP; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301 USA */ public class Main { public static final double ROOT2PI = Math.sqrt(2.0 * Math.PI); public static final double gauss(final double mean, final double sigma, final double x) { return Math.exp(-0.5 * Math.pow((x - mean) / sigma, 2.0)) / (sigma * ROOT2PI); } }