Hello,
Polishing up some work I've had *almost* done for a long time, please
review an initial take on providing library support for unsigned integer
arithmetic:
4504839 Java libraries should provide support for unsigned integer
arithmetic
4215269 Some Integer.toHexString(int) results cannot be decoded
back to an int
6322074 Converting integers to string as if unsigned
http://cr.openjdk.java.net/~darcy/4504839.1/
For the first cut, I've favored keeping the code straightforward over
trickier but potentially faster algorithms. Tests need to be written
for the unsigned divide and remainder methods, but otherwise the
regression tests are fairly extensive.
To avoid the overhead of having to deal with boxed objects, the unsigned
functionality is implemented as static methods on Integer and Long, etc.
as opposed to introducing new types like UnsignedInteger and UnsignedLong.
(This work is not meant to preclude other integer arithmetic
enhancements from going into JDK 8, such as add/subtract/multiply/divide
methods that throw exceptions on overflow.)
Thanks,
-Joe
