ComplexF64 inv: combine if-statements and use faster max without NaN handling #29058
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This basically does the same for
inv(w:ComplexF64)as was done for/(z::ComplexF64, w::ComplexF64)in #29042. This also splits out some common functionality into a separate function,robust_cinv(...).On my computer, testing with values drawn from
rand(ComplexF64), these changes lead to a 1.25× speedup.@simonbyrne