package rpn.doubles;

import rpn.Calculator;

public class SqrtItem extends FcnItem {
	
	public SqrtItem(Calculator ca) {
		super(ca);
	}
	
	public double f(double x) {
		return(Math.sqrt(x));
	}
	
	public boolean inRange(double x) {
		return(x >= 0.0);
	}
	
	public String toString() {
		return("sqrt");
	}
}