On 06/18/2013 06:13 PM, Brian Burkhalter wrote: > This RFR was initially posted last month: > > http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-May/016999.html > > I hope that this is the final re-post. The issues in question are > > http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4837946 > http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4646474 > > and the webrev as before is at > > http://cr.openjdk.java.net/~bpb/4837946/
Brian, Thanks for pushing this improvement. As I've said before, I'm more than willing to put my personal e-mail address on this patch to support the Karatsuba and Toom-Cook and pow() and radix conversion fixes. I'll put my reputation on the line. You're free to let people e-mail me personally if their multiplications are incorrect. I want to support this. It makes Java, and pure math, implemented in Java, better. If there's a problem, yo, I'll solve it. (Sorry, I channeled Vanilla Ice there.) After all, I've been publishing many of these improvements for 11+ years, and I'm the person whose e-mail address comes up when someone searches about these issues. To be frank, I'm personally involved much more than Sun/Oracle employees whose e-mail addresses are hidden. I field a *lot* of questions about making BigInteger and BigDecimal faster. I've helped a lot of people for many years integrate these changes into their JVMs, which isn't easy. I try hard. I have many examples of fundamental problems in BigInteger being broken for 3+ years while I've fixed them in my own language within the day. I am willing to support this and fix it fast. I think my optimizations are simple and obvious; after all, I posted a list of links to undergraduate classes who are expected to implement Karatsuba or Toom-Cook multiplication in a day or a week. I don't want to present myself as a genius. I'm no better than a typical undergraduate. -- Alan Eliasen elia...@mindspring.com http://futureboy.us/
