On Thu 14 Feb 2002 17:06, Kate wrote:
> Anyone know how to turn a signed number into an unsigned one.
Er. *If* you have a type which can hold the unsigned result, then
it's:
2^(size) + (signed number)
eg : 4294967296 + (-1407713022) = 2887254274 (not 2392992828; don't
know where you got that from).
But this will only work if you use a type which can hold the unsigned
version (eg : a 64-bit integer). If you try with a 32-bit integer,
you'll get the signed value back again, as it's a question of
interpretation of the bit pattern, not of storage (2887254274 and
-1407713022 are identical bit patterns in a 32-bit variable).
Colm
--
Colm Buckley : Systems Architect at NewWorldIQ
Personal : colm at tuatha.org | +353 87 2469146 | www.colm.buckley.name
Business : colm at newworldiq.com | +353 1 4334334 | www.newworldiq.com
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