But that's a solved problem, decades ago. Many modern language implementations correctly implement it. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1

But that's a solved problem, decades ago. Many modern language implementations correctly implement it. http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.45.4152 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.45.4... http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.52.2247 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.52.2... Sure there's a trade-off (you need multi-precision calculation) so it's fine to sacrifice precision over speed/footprint as long as that's the explicit design choice. If it's not an explicit choice, it's a bit disappointing.