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 randrange
021 */
022package lucee.runtime.functions.math;
023
024import lucee.runtime.PageContext;
025import lucee.runtime.exp.ExpressionException;
026import lucee.runtime.ext.function.Function;
027
028public final class RandRange implements Function {
029        public static double call(PageContext pc , double number1, double number2) throws ExpressionException {
030                return call(pc,number1,number2,"cfmx_compat");
031        }
032        public static double call(PageContext pc , double number1, double number2, String algo) throws ExpressionException {
033            
034                int min=(int) number1;
035                int max=(int) number2;
036                
037                if(number1>number2) {
038                        int tmp=min;
039                        min=max;
040                        max=tmp;
041                }
042                int diff=max-min;
043                return ((int)(Rand.call(pc,algo)*(diff+1)))+min;
044        }
045        
046        public static int invoke(int min, int max) throws ExpressionException {
047            
048                if(min>max) {
049                        int tmp=min;
050                        min=max;
051                        max=tmp;
052                }
053                int diff=max-min;
054                return ((int)(Rand.call(null,"cfmx_compat")*(diff+1)))+min;
055        }
056        
057        
058}