Do you want that I prepare this FloatingDecimal/FormattedFloatingDecimal patch ?
-Dima On Fri, Feb 22, 2013 at 2:32 AM, Brian Burkhalter <brian.burkhal...@oracle.com> wrote: > I am withdrawing this patch for the time being as properly the changes should > also go into the fork sun.misc.FormattedFloatingDecimal. I'll post an updated > patch once it is available. > > Thanks, > > Brian > > On Feb 14, 2013, at 5:23 PM, Brian Burkhalter wrote: > >> The patch below is as submitted to OpenJDK bugzilla but with enhanced >> comments. It pertains to the correction loop in the doubleValue() method of >> FloatingDecimal. The situation appears to arise when the candidate value is >> less than 2*Double.MIN_NORMAL as for such values the ULP is less than >> 2*Double.MIN_VALUE so that the intermediate result 0.5*ULP is less than >> Double.MIN_VALUE which rounds to zero per FP-strict and the correction is >> therefore zero. Thus the candidate value is unchanged. The fix is to add the >> ULP to twice the candidate value, obtain the intermediate result, and then >> halve it to obtain the adjusted candidate. >> >> I am relatively new to IEEE-754 and this area of the code so any comments >> would be appreciated. >> >> Thanks, >> >> Brian >> >> diff -r 1405ad6afb1e -r 36482ed9bb7e >> src/share/classes/sun/misc/FloatingDecimal.java >> --- a/src/share/classes/sun/misc/FloatingDecimal.java Thu Feb 14 11:09:07 >> 2013 -0800 >> +++ b/src/share/classes/sun/misc/FloatingDecimal.java Thu Feb 14 16:47:53 >> 2013 -0800 >
