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bitvectors verses bignums
- To: EAK at MIT-MC
- Subject: bitvectors verses bignums
- From: George J. Carrette <GJC at MIT-MC>
- Date: Sun, 05 Dec 1982 00:37:00 -0000
- Cc: COMMON-LISP at SU-AI
MOON's original note pointed out that no side-effecting operations
had been given at the time for bitvectors. This was a fairly
silly oversight, now fixed.
In any case there is a subtle difference between them, the meaning
of the LENGTH. You can have a bitvector 100 bits long, with all bits zero,
but you cannot have a number 100 bits long which is 0.
p.s. On the lexical-scoping issue: I am working on a note summarizing
USER-EXPERIENCE and comments collected over the last year that the
"hail-mary" versions of NIL have been in use, since lexical-scoping
caused the most people the most problems.