On 2024-09-12 11:08 a.m., Jonathan Dushoff wrote:
In this case, I do think we should look into the consequences of indeed distinguishing <double> * <complex> <complex> * <double> and <complex> / <double> from their respective current {1. coerce to complex, 2. use complex arith} arithmetic.I'm wondering whether – if this indeed gets opened up – it might also make sense to calculate <double> x / <complex> y using real arithmetic (as x*y / |y|²)
That's not the correct formula, is it? I think the result should be x * Conj(y) / Mod(y)^2 . So that would involve <double> * <complex> and <complex> / <double>, not just real arithmetic.
Duncan Murdoch ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
