Ternary operator support

[maheshkurmi]

Is there any plan of introducing ternary operator support in exp4j? I think it will be a very useful feature. Please look at the link to get an idea I am talking about
http://math.hws.edu/eck/jsdemo/grapher.html

[dreamscached]

This can be implemented as a function (although, which lacks the property of short circuit evaluation as it will always compute both arguments), here's what I could come up with:

public final class IfFunction extends Function {
    public IfFunction() {
        super("if", 3);
    }

    @Override
    public double apply(double... doubles) {
        return doubles[0] != 0 ? doubles[1] : doubles[2];
    }
}

Can be used like this:

if(condition,true,not_true)

Where condition is 0 for false and 1 for true, and true/not_true are correspondingly values the function returns if condition is met or not.

It'd be still very nice to have arbitrary arity support for operators, but I understand it will be quite a challenge.