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nachokb
Participant
December 19, 2018 at 7:10 am
Post count: 11
#3386

If I remember correctly from one of the talks, every math op had 4 versions:

1. saturating: 250 + 30 = 255 (8 bits);
1. excepting: 250 + 30 = 💣;
1. wrap-around: 250 + 30 = 24;
1. expanding: 250 + 30 = 280 (16×8 bits => 2×8×8 bits);

I believe arbitrary-precision math can be easily implemented using the excepting versions (just handle the special case in an interrupt).

— nachokb