Function vips_sys::vips_draw_line

pub unsafe extern "C" fn vips_draw_line(
    image: *mut VipsImage, 
    ink: *mut f64, 
    n: c_int, 
    x1: c_int, 
    y1: c_int, 
    x2: c_int, 
    y2: c_int,
     ...
) -> c_int