Hi Brain, I believe that you can reuse "zeros" array which is declared in the class to improve:
// Pad with internal zeros if necessary. // Don't pad if we're at the beginning of the string. if ((s.length() < digits) && (sb.length() > 0)) for (int i=s.length(); i<digits; i++) // May be a faster way to sb.append('0'); // do this? Something like: // Pad with internal zeros if necessary. // Don't pad if we're at the beginning of the string. if (sb.length() > 0) for (int i = digits - s.length(); i > 0; i -= 63) sb.append(i > 63 ? zeros[63] : zeros[i]); Regards, Victor Polischuk --- Original message --- From: "Brian Burkhalter" <brian.burkhal...@oracle.com> Date: 19 June 2013, 22:59:03 > Continuing on from this thread > > http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-June/018181.html > > here is a new Request for Review, this time for > > http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4641897 > > The webrev is here > > http://cr.openjdk.java.net/~bpb/4641897/ > > The code changes have been reviewed by me and regression tests have been run > on my development machine including the updated test which is in the webrev. > Performance testing has been performed only insofar as to verify improvement > at bit lengths much larger than the algorithm crossover threshold with the > understanding that, as for 4837946 and 4646474, the threshold is subject to > adjustment pending performance evaluation on a mix of platforms. > > Thanks, > > Brian