packing unsigned char in PVM

dek_ml at dek_ml at
Tue Jun 27 22:15:16 PDT 2000

"Robert G. Brown" writes:
>On Wed, 28 Jun 2000, Burgu Praveen Kumar wrote:
>> Can anyone of u tell me how to pack unsigned char in PVM. 
>I thought char was always unsigned.  Signed and unsigned differentiates
>integers (only), or at least so I thought -- reserving the sign bit.
>You should just pack for char, at a guess.

On SGIs, char is unsigned, on Intel, char is signed.  CPUs can do either
(just like endian).  I found this out when the results I got in a program
I had ported to linux were junk-- -1's when they should have been 255s.


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