>> # Three digits in, 2/6 digits out, rounding down.
>> 1110	2	6
1110
>> 111	2	6
111
>> 11.1	2	6
11
>> 1.11	2	6
1.1
>> 0.111	2	6
0.11
>> 0.0111	2	6
0.011
>> 0.00111	2	6
0.0011
>> 0.000111	2	6
0.00011
>> 0.0000111	2	6
0.000011
>> 
>> # One digit in. Must not produce spurious digits or trailing nulls.
>> 
>> 1000	2	6
1000
>> 100	2	6
100
>> 10	2	6
10
>> 1	2	6
1
>> 0.1	2	6
0.1
>> 0.01	2	6
0.01
>> 0.001	2	6
0.001
>> 0.0001	2	6
0.0001
>> 0.00001	2	6
0.00001
>> 0.0000011	2	6
0.000001
>> 
>> # Three digits in, 2/6 digits out, rounding up.
>> 
>> 996	2	6
996
>> 99.6	2	6
100
>> 9.96	2	6
10
>> .996	2	6
1
>> .0996	2	6
0.1
>> .00996	2	6
0.01
>> .000996	2	6
0.001
>> 
>> # Three digits in, 1/6 digits out, rounding down.
>> 
>> 1110	1	6
1110
>> 111	1	6
111
>> 11.1	1	6
11
>> 1.11	1	6
1
>> 0.111	1	6
0.1
>> 0.0111	1	6
0.01
>> 0.00111	1	6
0.001
>> 0.000111	1	6
0.0001
>> 0.000011	1	6
0.00001
>> 
>> # One digit in. Must not produce trailing nulls.
>> 
>> 1000	1	6
1000
>> 100	1	6
100
>> 10	1	6
10
>> 1	1	6
1
>> 0.1	1	6
0.1
>> 0.01	1	6
0.01
>> 0.001	1	6
0.001
>> 0.0001	1	6
0.0001
>> 0.00001	1	6
0.00001
>> 0.0000011	1	6
0.000001
>> 
>> # Three digits in, 1/6 digits out, rounding up.
>> 
>> 996	1	6
996
>> 99.6	1	6
100
>> 9.96	1	6
10
>> .996	1	6
1
>> .0996	1	6
0.1
>> .00996	1	6
0.01
>> .000996	1	6
0.001