64-bit / 128-bit data element type for array?

Robert Kern robert.kern at gmail.com
Mon Dec 22 20:26:34 CET 2008

akineko wrote:
> Hello everyone,
> I need to handle binary files that contain 64-bit (or 128-bit in the
> furture) unsigned int data.
> Python's array seems not supporting unsigned int type beyond 32-bit
> ('L').
> I would like to use Python array as I need to make my program work on
> both big-endian machines as well as on little-endian machines.
> What is the best way to deal with 64-bit / 128-bit data elements in
> Python (must support byteswap())?
> (must be machine-independent)

You might give numpy a try. We support uint64 data even on 32-bit machines 
provided that your C compiler does. I haven't seen uint128 in the wild, though.


Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco

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