Vector2.angle() performance - #18622

function angle(x,y){
    var angle = Math.atan2( y, x );

    if ( angle < 0 ) angle += 2 * Math.PI;

    return angle;
}
function angle2(x,y){
    var angle = Math.atan2( - y, - x ) + Math.PI;

    return angle;
}

var start=performance.now()
for(let i=0;i<1000000000;i++){
	angle(1,1)
}
console.log(performance.now()-start)

var start=performance.now()
for(let i=0;i<1000000000;i++){
	angle2(1,1)
}
console.log(performance.now()-start)