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From "Daniel Fridlender (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-1636) [classlib][java.math] optimization of two-complement related methods
Date Thu, 28 Sep 2006 17:58:52 GMT
[classlib][java.math] optimization of two-complement related methods
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                 Key: HARMONY-1636
                 URL: http://issues.apache.org/jira/browse/HARMONY-1636
             Project: Harmony
          Issue Type: Improvement
          Components: Classlib
            Reporter: Daniel Fridlender
            Priority: Minor


Since the current implementation of BigInteger is sign-magnitude, the implementation of two-complement
related methods (e.g. bitwise logical operators, bitLength) often create intermediate data
(two-complement copies of arguments and results).  This is costly in space and time.

The present optimization avoids creating that intermediate data.

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