On: 1/999999999999999999999998999999999999999999999999

[boxfire]

> echo 'scale=500-1;10/(10^20-10^10-1)' | BC_LINE_LENGTH=12 bc

will give you the ten digit ones, with the last digit rounded up on the very end.

I havent quite got an exact formula for scale before the rounding is wrong, e.g. for 100 digits:

> echo 'scale=50000-2000-1;10/(10^200-10^100-1)' | BC_LINE_LENGTH=102 bc

[discardorama → boxfire]

Why not just use

     scale=499

instead of

     scale=500-1

? I'm curious.

[boxfire → discardorama]

Originally in my terminal I was experimenting to find a cutoff for the point where the numbers become inaccurate. All of those formulas were in terms of digits and had a -1 on the end.