...Not to "dig deeper", but just for the sake of conclusion, as at former writing I only had a 64bit calculator at hand and I could use GMP (GNU Multiple Precis

...Not to "dig deeper", but just for the sake of conclusion, as at former writing I only had a 64bit calculator at hand and I could use GMP (GNU Multiple Precision Bignum) later: the truncated square root of 'Chocolate' is 43260920640 (in the parent I had to truncate the string to 64 bits). Lossful though: you will have to get enough decimals (or resort to padding the input etc) to return to the original. Yes, off topic and shamefully unrequired, "Curiosity show" material and a dad joke - yet, in a way still interesting. May be useful somewhere.