Alexander Voigt
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Alexander Voigt
I propose to add a test for `ln_1p()` that checks that $\ln(1+z)=z$ for $z=\epsilon+i\epsilon$, where $\epsilon=$`std::f64::EPSILON`. In my opinion this test should pass within 1ulp.
julia has a reference implementation that can be found here: https://github.com/JuliaLang/julia/blob/5ebc5b463ead44e98a3108a477084bdd591e3d8e/base/complex.jl#L748