csail/6006psets_ng — comment on commit 567e292441d2a5cf99f7e43da25f0907762876fa
File: 5/code/rsa/big_num.rb line 264
By pwnall:

```ruby
# Makes sure that inverse will return a non-nil value.
#
# If the number doesn't already have a pre-computed inverse, a rough estimate is generated.
```