Function cairo_sys::cairo_pattern_get_radial_circles

pub unsafe extern "C" fn cairo_pattern_get_radial_circles(
    pattern: *mut cairo_pattern_t, 
    x0: *mut c_double, 
    y0: *mut c_double, 
    r0: *mut c_double, 
    x1: *mut c_double, 
    y1: *mut c_double, 
    r1: *mut c_double
) -> Status