For some reason, the
sqrt function (or equivalent) in all programming languages has broken! You must find a workaround.
The input is 1 number.
The output is the square root of the input. You must be accurate to ±0.1.
You may not use any built in
sqrt function (or equivalent). You can not use anything equivalent to
^1/2, either. You must achieve this in the smallest byte count possible.