001    /**
002     * Implements the CFML Function sqr
003     */
004    package railo.runtime.functions.math;
005    
006    import railo.runtime.PageContext;
007    import railo.runtime.exp.ExpressionException;
008    import railo.runtime.ext.function.Function;
009    
010    public final class Sqr implements Function {
011            public static double call(PageContext pc , double number) throws ExpressionException {
012                if(number >= 0.0D)
013                return StrictMath.sqrt(number);
014            throw new ExpressionException("invalid argument, function argument must be a positive number");
015        
016            }
017    }