Alexander Voigt

Results 8 issues of Alexander Voigt

Dear @sakra , I've found an issue with `FindMathematica` 3.3.0 on my Raspberry Pi 3 (Raspbian, based on Debian buster, 32-bit): CMake complains: Unknown CMake command "Mathematica_ADD_LIBRARY" I've setup the...

Dear @sakra , a colleague of mine stumbled upon the issue with missing `libuuid` again. He has an Ubuntu machine with Mathematica 12. On this machine the package `uuid-dev` is...

The current implementation of the generalized zeta function $\zeta(s,z)$ suffers from an imprecision for large negative $s$: ~~~.jl julia> SpecialFunctions.zeta(-100, 2.0) -1.921642939869165e44 ~~~ The correct result should be $-1$, because...

## Description In doctest 2.4.9 a comparison for approximate equality of two floating point numbers is restricted to `double` precision. I'd propose to allow users to compare floating point numbers...

type/feature-proposal
category/floats

I found that in version 0.4.5 for complex numbers close to 1 the implementation of the complex logarithm `ln` looses many digits of precision: ~~~.rs use num::complex::Complex; fn main() {...

I'd propose to add a complex equivalent of the real function `ln_1p()`. This function appears in several applications that involve complex analysis.

enhancement
help wanted

Dear HypergeometricFunctions developers, I was comparing the function `x*pFq((1, 1, 1), (2, 2), x)` with the dilogarithm and noticed multiple numerical instabilities in version 0.3.17. To reproduce: ~~~.jl using HypergeometricFunctions,...

I propose to add the complex variant of the real $\mathrm{cis}$ function. It would be defined as $\mathrm{cis}\colon\mathbb{C}\to\mathbb{C}$ with $$\mathrm{cis}(z) = \exp(iz) = \exp(-\mathrm{Im}(z))\mathrm{cis}(\mathrm{Re}(z))$$ This complex $\mathrm{cis}$ function has applications...