| private static GetArcCos ( double cos ) : double | ||
| cos | double | |
| Résultat | double | |
private static double GetArcCos(double cos)
{
var c = cos/TenThousand;
if ((Math.Abs(Math.Abs(c) - 1.0) < 1e-60)) //Why does this make a difference if there is only 15/16 decimal places in regards to precision....?
{
return (1 - c)*Pi/2.0;
}
return (Math.Atan(-c/Math.Sqrt(1 - c*c)) + 2*Math.Atan(1))*TenThousand;
//return (Math.Abs(Math.Abs(c) - 1.0) < 1e-60
// ? (1 - c) * Pi / 2.0
// : Math.Atan(-c / Math.Sqrt(1 - c * c)) + 2 * Math.Atan(1)) * TenThousand;
}
