Hi Brian,
I've taken a look at the change, but I don't understand why the problem
wasn't surfaced before?
-Joe
On 12/4/2013 1:34 PM, Brian Burkhalter wrote:
Hello,
Issue: https://bugs.openjdk.java.net/browse/JDK-8029514
Webrev: http://cr.openjdk.java.net/~bpb/8029514/webrev/
The problem causing this failure is that the method getLower() used by
Karatsuba multiplication is expected to return an unsigned value but instead
returns 'this' if the parameter 'n' is not greater than the int-length of the
BigInteger on which it is invoked. For multiplications in which there is a
negative factor this could result in an incorrect product being obtained.
The BigIntegerTest is also updated to reflect the modified thresholds (should
have been in the patch for 8022181 but was not …).
Thanks,
Brian
