; Hacker's Delight, page 15, rules j - m 1 var 8 x 2 var 8 y 3 one 8 4 constd 8 2 5 sub 8 1 2 6 add 8 1 -2 7 add 8 6 3 8 ne 1 5 7 9 xor 8 1 2 10 and 8 -1 2 11 mul 8 10 4 12 sub 8 9 11 13 ne 1 5 12 14 and 8 1 -2 15 sub 8 14 10 16 ne 1 5 15 17 mul 8 14 4 18 sub 8 17 9 19 ne 1 5 18 20 or 1 8 13 21 or 1 16 19 22 or 1 20 21 23 root 1 22