Function m4ri_sys::mzd_submatrix

pub unsafe extern "C" fn mzd_submatrix(
    s: *mut Mzd, 
    m: *const Mzd, 
    lowr: Rci, 
    lowc: Rci, 
    highr: Rci, 
    highc: Rci
) -> *mut Mzd

Copy a submatrix first argument may be preallocated space or null