// JavaScript by Peter Hayes http://www.peter-hayes.freeserve.co.uk/
// Copyright 2001-2003
// This code is made freely available but please keep this notice.
// I accept no liability for any errors in my coding but please
// let me know of any errors you find. My address is on my home page.

// Extensions to the Math routines - Trig routines in degrees

function rev(angle){return angle-Math.floor(angle/360.0)*360.0;}
function sind(angle){return Math.sin((angle*Math.PI)/180.0);}
function cosd(angle){return Math.cos((angle*Math.PI)/180.0);}
function tand(angle){return Math.tan((angle*Math.PI)/180.0);}
function asind(c){return (180.0/Math.PI)*Math.asin(c);}
function acosd(c){return (180.0/Math.PI)*Math.acos(c);}
function atan2d(y,x){return (180.0/Math.PI)*Math.atan(y/x)-180.0*(x<0);}

// Functions used for converting Basic code
function SGN(x) { return (x<0)?-1:+1; }