in reply to Re^4: rand and srand across builds and platforms?
in thread rand and srand across builds and platforms?

Yeah, looks to be. On a whim I checked on an x86 FreeBSD 5 box and got the same numbers I got on OS X. So it looks to be definitely tied to the libc underneath. You might could get by with stubbing out a hash of the n values you're expecting for different values of $^X . . . .

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Re^6: rand and srand across builds and platforms?
by BrowserUk (Patriarch) on Mar 08, 2005 at 20:00 UTC

    Thanks for doing that.

    You might could get by with stubbing out a hash of the n values...

    If I could just store one srand seed per OS, and the rand function would generate the same sequence from that point on that might work. But even if it is the same generator and just platform specific seeding, finding which seed caused the sequence I need on each platform would be a labour of love ;)

    As it it, I'll just generate a big batch of random tests recording the rands used to generate them and then pick the best/most difficult etc. and embed the sequences into the testcases.

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