Function vips_sys::im_glds_matrix

pub unsafe extern "C" fn im_glds_matrix(
    im: *mut VipsImage, 
    m: *mut VipsImage, 
    xpos: c_int, 
    ypos: c_int, 
    xsize: c_int, 
    ysize: c_int, 
    dx: c_int, 
    dy: c_int
) -> c_int