Firth, or 1th, is a postfix calculator for fractions.
Firth is a stack based rpn calculator, created to be an improved version of Unix's dc. It supports basic arithmetic and is the perfect companion utility to Fractran.
Examples
The following example, will print the mixed fraction 3&1/6.
clr 11 4 div 5 12 div add mix
To print the decimal value of a fraction.
clr 22 7 div 1 791 div sub dec
To get the floor() of a fraction.
clr 17 4 div dup 1 mod sub .
1th.c
14V06— Firth Release