Abs.java

package com.sun.pdfview.function.postscript.operation;

import java.util.Stack;

final class Abs implements PostScriptOperation {
	@Override
	/**
	 * <i>num1</i> <b>abs</b> <i>num2</i> <p>
	 *
	 * The type of the result is the same as the type of num1,
	 * unless num1 is the smallest (most negative) integer,
	 * in which case the result is a real number.<p>
	 *
	 * errors: stackunderflow, typecheck
	 */
	public void eval(Stack<Object> environment) {
	    environment.push(Math.abs((Double)environment.pop()));
	}
}