001 /** 002 * Implements the CFML Function bitshln 003 */ 004 package railo.runtime.functions.math; 005 006 import railo.runtime.PageContext; 007 import railo.runtime.exp.FunctionException; 008 import railo.runtime.ext.function.Function; 009 010 public final class BitSHLN implements Function { 011 public static double call(PageContext pc , double dnumber, double dcount) throws FunctionException { 012 int number=(int) dnumber,count=(int) dcount; 013 if(count > 31 || count < 0) 014 throw new FunctionException(pc,"bitSHLN",2,"count","must be beetween 0 and 31 now "+count); 015 016 return number << count; 017 } 018 }