pub unsafe extern "C" fn pixGetLocalSkewAngles(
    pixs: *mut PIX,
    nslices: l_int32,
    redsweep: l_int32,
    redsearch: l_int32,
    sweeprange: l_float32,
    sweepdelta: l_float32,
    minbsdelta: l_float32,
    pa: *mut l_float32,
    pb: *mut l_float32,
    debug: l_int32
) -> *mut NUMA