Function vips_sys::im_similarity_area

pub unsafe extern "C" fn im_similarity_area(
    in_: *mut VipsImage, 
    out: *mut VipsImage, 
    a: f64, 
    b: f64, 
    dx: f64, 
    dy: f64, 
    ox: c_int, 
    oy: c_int, 
    ow: c_int, 
    oh: c_int
) -> c_int