Java Double Number Round roundDoubleTo(double val, int pow)

Description

Function to round off a double value upto a specific decimal place.

License

Open Source License

Parameter

Parameter	Description
val	- the value to be rounded off
pow	- the number of places after the decimal upto which val should be rounded

Declaration

public static double roundDoubleTo(double val, int pow) 

Method Source Code

//package com.java2s;
/*//  w  w w.  j a v a 2s  .  c  om
 * Copyright (C) 2012  Krawler Information Systems Pvt Ltd
 * All rights reserved.
 * 
 * This program 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.
 * 
 * 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

public class Main {
    /**
     *  Function to round off a double value upto a specific decimal place.
     * e.g. roundDoubleTo(4.45,1) will give 4.5
     * @param val - the value to be rounded off
     * @param pow - the number of places after the decimal upto which val should be rounded
     * @return
     */
    public static double roundDoubleTo(double val, int pow) {
        double p = (double) Math.pow(10, pow);
        val = val * p;
        double tmp = (double) (Math.round(val));
        return (Double) tmp / p;
    }
}

Related

1. roundDouble(double value)
2. roundDouble(double value, int afterDecimalPoint)
3. roundDouble3(double r)
4. roundDoubleDownTo(double value, double steps)
5. roundDoubleNicely(double intensity)
6. roundDoubleToInt(final double VALUE)
7. roundDoubleToPlace(double d, int place)
8. roundDoubleValue(double value)
9. roundDown(double a)