Function CGContextAddArcToPoint 

pub extern "C-unwind" fn CGContextAddArcToPoint(
    c: Option<&CGContext>,
    x1: CGFloat,
    y1: CGFloat,
    x2: CGFloat,
    y2: CGFloat,
    radius: CGFloat,
)

👎Deprecated:

renamed to CGContext::add_arc_to_point

Available on crate feature CGContext only.