Hi, On 2018-10-02 20:17, Martin Buchholz wrote: > Raffaello and Ulf should talk.
I work on this project in my spare time, which is limited and not entirely devoted to programming for the OpenJDK, of course ;-) Starting this weekend, I'll try to recollect my notes and organize them in paper or tutorial form. I cannot speak for Ulf, of course, but my understanding is that his porting to Java is a spare-time project, too. > It seems like Ulf's ryu project is trying to solve the same problem. > ryu is also still being worked on, but there is already a published > paper and ryu is being adopted by various core libraries. > https://github.com/ulfjack/ryu > https://dl.acm.org/citation.cfm?id=3192369 > Ulf, if you haven't already signed an Oracle Contributor Agreement for > openjdk, you should do so. > (Who knew printing floating point numbers could be so hard?) > Well, printing floating point numbers is simple if there are no performance concerns. Abstractly, it is only a matter of calculations with rational numbers. It becomes harder when efficiency becomes part of the goal. The quest started about 30 years ago with a seminal paper of Steele & White and seemed settled with an implementation by Gay around 1991. Since then, other interesting approaches have seen light with the goal of even better performance. Greetings Raffaello
