A sad coda to this story is that BigInteger has changed little since then, with the exception of faster multiplication for large numbers in Java 8. In that time, work continued apace on native libraries, notably GNU Multiple Precision arithmetic library (GMP). Java programmers in need of truly high-performance multiprecision arithmetic are now justified in using GMP via native methods [Blum14].
Hmmm why haven't they fixed this. Seems like a big use case?
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Robert
