[Cfp-interest 1483] Re: complex multiplication and division

[Jim Thomas]

I wouldn't expect high quality implements of complex functions to use complex arithmetic internally, because of performance and because complex multiply and divide are unstable where there’s significant cancellation.

- Jim Thomas 

> On Feb 9, 2020, at 12:33 AM, paul zimmermann <Paul.Zimmermann at inria.fr> wrote:
> 
> I find it strange that there is no requirement for correct rounding for
> multiplication or division. How can we then build accurate mathematical
> functions if we can't rely on multiplication/division?

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