I just think they should have mentioned, in the srand documentation, that srand(42) would produce different results (on Windows) for 5.20.0 as compared to earlier perl versions - but the srand documentation (as it stands) suggests to me that no such change is to be expected.

I think that it is inherent that if the implementation of rand changes, then the effect of srand( N ) will also change. It couldn't be otherwise.

Effectively, all PRNG produce a fixed sequence of numbers of some length and then wrap-around to the beginning and produce the same sequence again.

All srand does it pick a fixed offset into the sequence from which to start.

Supplying the same offset to two different PRNG sequences will (usually) result in a different first value. And the subsequent sequence of values will definitely be different.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^9: Late PM, 12/24/2014 & all year long by BrowserUk
in thread Late PM, 12/24/2014 & all year long by ww

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