Unit fraction analysis

determines how 1/n behaves in base b

This little file will tell you after how many decimals will a repeating decimal start to repeat as well as how many digits will repeat.
example : 1/24 = 0.0416666666....

so unit(24,10) will return
Non-terminating
After 3 non-repeating digits, there are 3 repeating digits.

but 1/24 in base 6 = 0.013 so this will return:
Terminating
Terminates after 3 digits.