Be careful how you combine them. Done right its fine; done wrong and it exacerbates any limitations in the 32-bit rands.

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". The enemy of (IT) success is complexity.
In the absence of evidence, opinion is indistinguishable from prejudice. Suck that fhit

In reply to Re^3: how to get a 64bit random number with rand() ? by BrowserUk
in thread how to get a 64bit random number with rand() ? by iglake

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