number.eo:338-341: min. Implement sqrt without using...

[0pdd]

The puzzle 89-b869de10 from #89 has to be resolved:

eo-math/src/main/eo/org/eolang/math/number.eo

Lines 338 to 341 in 5aef8d7

	# @todo #89:90 min. Implement sqrt without using number.pow.
	# We need it because pow is atom and supposed to be removed.
	# You can use Heron's iterative formula with a quite good
	# convergence rate.

The puzzle was created by @levBagryansky on 24-Nov-22.

Estimate: 90 minutes, role: DEV.

If you have any technical questions, don't ask me, submit new tickets instead. The task will be "done" when the problem is fixed and the text of the puzzle is removed from the source code. Here is more about PDD and about me.

[0pdd]

@maxonfjvipon please pay attention to this new issue.