001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019/**
020 * Implements the CFML Function round
021 */
022package lucee.runtime.functions.math;
023
024import java.math.BigDecimal;
025
026import lucee.runtime.PageContext;
027import lucee.runtime.ext.function.Function;
028
029public final class Round implements Function {
030
031        private static final long serialVersionUID = 3955271203445975609L;
032
033        public static double call(PageContext pc , double number) {
034                return call(pc,number,0);
035        }
036        
037        public static double call(PageContext pc, double number, double precision) {
038                if(precision<=0)
039                        return StrictMath.round(number);
040                
041                BigDecimal bd = new BigDecimal(number);
042                bd = bd.setScale((int)precision, BigDecimal.ROUND_HALF_UP);
043                return bd.doubleValue();        
044        }
045}