Apply a bias to a number in the unit interval, moving numbers towards 0 or 1 according to the bias parameter. - Java java.lang

Java examples for java.lang:Math Number

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Description

Apply a bias to a number in the unit interval, moving numbers towards 0 or 1 according to the bias parameter.

Demo Code

/*/*from w w  w.j ava  2s.co m*/
 * Copyright (c) 2006-2011 Karsten Schmidt
 * 
 * This library 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 2.1 of the License, or (at your option) any later version.
 * 
 * http://creativecommons.org/licenses/LGPL/2.1/
 * 
 * This 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */
//package com.java2s;

public class Main {
    /**
     * Apply a bias to a number in the unit interval, moving numbers towards 0 or 1
     * according to the bias parameter.
     * @param a the number to bias
     * @param b the bias parameter. 0.5 means no change, smaller values bias towards 0, larger towards 1.
     * @return the output value
     */
    public static float bias(float a, float b) {
        //      return (float)Math.pow(a, Math.log(b) / Math.log(0.5));
        return a / ((1.0f / b - 2) * (1.0f - a) + 1);
    }
}

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