/*
* Jatha - a Common LISP-compatible LISP library in Java.
* Copyright (C) 1997-2005 Micheal Scott Hewett
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*
* For further information, please contact Micheal Hewett at
* hewett@cs.stanford.edu
*
*/
package org.jatha.compile;
import org.jatha.Jatha;
import org.jatha.dynatype.LispValue;
import org.jatha.machine.*;
public class ArcTangent2Primitive extends LispPrimitive
{
public ArcTangent2Primitive(Jatha lisp)
{
super(lisp, "ATAN2", 2);
}
public void Execute(SECDMachine machine)
{
LispValue arg2 = machine.S.pop();
LispValue arg1 = machine.S.pop();
machine.S.push(arg1.atan2(arg2));
machine.C.pop();
}
}