Function vips_sys::im_measure

pub unsafe extern "C" fn im_measure(
    im: *mut VipsImage, 
    box_: *mut IMAGE_BOX, 
    h: c_int, 
    v: c_int, 
    sel: *mut c_int, 
    nsel: c_int, 
    name: *const c_char
) -> *mut DOUBLEMASK