; Hacker's Delight, page 15, rules a - e
1 var 8 x
2 one 8
3 neg 8 1
4 add 8 -1 2
5 ne 1 3 4

6 sub 8 1 2
7 ne 1 3 -6

8 sub 8 3 2
9 ne 1 -1 8

10 neg 8 -1
11 add 8 1 2
12 ne 1 10 11

13 ne 1 -3 6


14 or 1 5 7
15 or 1 9 12
16 or 1 14 15
17 or 1 16 13
18 root 1 17