The GNU libc atanh is correctly rounded (inria.hal.science)
38 points by matt_d 3 days ago
kergonath 28 minutes ago
I don’t think I ever used atanh, but I always love some floating-point nerdery. These other documents by the same team are fantastic resources: https://inria.hal.science/hal-04714173v2/document for complex values and https://members.loria.fr/PZimmermann/papers/accuracy.pdf for real values.
Lots of good stuff here: https://members.loria.fr/PZimmermann/papers/ .
jonathrg 31 minutes ago
Good to know!