I'm implementing a dot
unit in an electrical design, but I'm only interested in the sign of the result and not the magnitude. Is there a way to reduce the number of mathematical operations (mainly the multiplication operations) to get just the sign faster and with less space?
Right now I'm calculating it using: (a1,b1,c1).(a2,b2,c2)=a1.a2+b1.b2+c1.c2
.