[Yrlec]

Interesting, thanks! Any particular reason they limit the multiplier to 35 bits and the output to 48 bits?

Edit: just noticed that Java limits the output to 32 bits, not 48 (http://en.wikipedia.org/wiki/Linear_congruential_generator). How does it create 64 bit values, like long and double?

[gcp]

Any particular reason they limit the multiplier to 35 bits and the output to 48 bits?

Good question. There appears to be no good justification for this, but the generator is guaranteed by the docs. So it's possible the initial implementation was bad and everybody is required to follow it since.

[marshray]

Probably it generates 32 bits twice.