constructor
3/1 4/1 0/1
1/2 5/7
2/3 -3/2
-2/3 3/2
logical
-2/1 -3/2
1
1
1
0
0
arithmetic
-2/1 -3/2
-7/2
-1/2
3/1
4/3
decompose
more tests
-3/2
0
1/2 1 1/2
2/1 1 2/1
0/1
1/2 1 1/2
2/2147483647
5/2147483647
2/3 4/5
