/*****************************************************************************

 JEP 2.4.1, Extensions 1.1.1
      April 30 2007
      (c) Copyright 2007, Nathan Funk and Richard Morris
      See LICENSE-*.txt for license information.

 *****************************************************************************/

package weasel.jep.function;


import java.util.Stack;

import weasel.jep.ParseException;
import weasel.jep.type.Complex;


/**
 * Converts a pair of real numbers to a complex number Complex(x,y)=x+i y.
 * 
 * @author Rich Morris Created on 24-Mar-2004
 */
public class Polar extends PostfixMathCommand {
	public Polar() {
		numberOfParameters = 2;
	}

	@Override
	public void run(Stack inStack) throws ParseException {
		checkStack(inStack);// check the stack
		Object param2 = inStack.pop();
		Object param1 = inStack.pop();

		if ((param1 instanceof Number) && (param2 instanceof Number)) {
			inStack.push(Complex.polarValueOf((Number) param1, (Number) param2));
		} else {
			throw new ParseException("Complex: Invalid parameter types " + param1.getClass().getName() + " " + param1.getClass().getName());
		}
		return;
	}
}
