#define yDirection (joystick.joy1_y1)
#define xDirection (joystick.joy1_x1)
float angle = 0.0
short x = xDirection, y = yDirection;

short vectorAngle = angle;

void getJoystickVector()
{
  x = -xDirection; y = yDirection;
    angle = x == 0 && y > 0 ? PI/2 :(
            x == 0 && y < 0 ? 3*PI/2 :(
            x >= 0 && y == 0 ? 0 :(
            x > 0 && y > 0 ? atan(y*1.0/x) :(     **Error**:Invalid numeric type (float, string) for assignment to byte variable
            y >= 0 ? atan(y*1.0/x) + PI :(          **Error**:Invalid numeric type (float, string) for assignment to byte variable
            y < 0 && x > 0 ? atan(y*1.0/x) + 2*PI :
                    atan(y*1.0/x) + PI)))));
}

float atan2(const float Y, const float X);