explaining the adder

[tech_pro]

Hi

I am a bit confused when defining the i,j,k in the adder

can any one help me to understand it

regards
uzmeed

 

[srizbf]

what is i,j and k?
give full information .

 

[tech_pro]

i , j , k

when we are in the carry look a head adder network we have equation for PG


P(i:j) = P(i:k+1)and P(k:j)
G(i:j ) = G(i:k+1)or (P(i:k+1 )and G(k:j) )

or u can find this equation on
https://www.cl.cam.ac.uk/research/srg/han/ACS-P35/8-bit-KoggeStone-Adder.pdf

page number 2

I want to ask how do these i, j ,k is defined for any block

 

[srizbf]

i is the bit number.
for an 8bit , i=0 to 7.

other , variables are not properly explained in the document.