23 Jun
2016
23 Jun
'16
9:11 a.m.
On Jun 23, 2016, at 12:07 PM, Al Kossow <aek at
bitsavers.org> wrote:
...
I have also heard that 2s compliment was popular in shorter word length
machines because 1s compliment multiple precision arithmetic is a PITA
to implement.
That's true. It certainly can be done and has been. But since one's complement
arithmetic uses end around carry, when you have multiple word you have to defeat the word
carry and instead do the carry around the whole number.
paul