That isn't a great method, see here: https://en.wikipedia.org/wiki/Catastrophic_cancellation https://en.wikipedia.org/wiki/Catastrophic_cancellation I wonder w

That isn't a great method, see here: https://en.wikipedia.org/wiki/Catastrophic_cancellation https://en.wikipedia.org/wiki/Catastrophic_cancellation I wonder what methods give good results for this sort of input though.