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Pierre-Marie Baty · **Re: srand() aberration ??? -** 14-06-2004

that's what I have here too. The first numbers are ALWAYS the same.

But now, even more weird: I notice that instead of doing

Code:

srand (time (NULL)); // initialize random seed

if I do

Code:

srand (GetTickCount ()); // initialize random seed

instead, then it does work normally (i.e, the first numbers are different this time).

What the ... ???

@botman
I might be wrong, but I think doing

Code:

rand () % 100

ends up with a not so random pseudo-random number generation. Doing a modulo unevens the distribution of the numbers in the suite along the {0, 100} axis. Any math brute (Hey Joe!) to confirm ?

	(#4)
Pierre-Marie Baty Roi de France Status: Offline Posts: 5,049 Join Date: Nov 2003 Location: 46°43'60N 0°43'0W 0.187A	Re: srand() aberration ??? - 14-06-2004 that's what I have here too. The first numbers are ALWAYS the same. But now, even more weird: I notice that instead of doing Code: srand (time (NULL)); // initialize random seed if I do Code: srand (GetTickCount ()); // initialize random seed instead, then it does work normally (i.e, the first numbers are different this time). What the ... ??? @botman I might be wrong, but I think doing Code: rand () % 100 ends up with a not so random pseudo-random number generation. Doing a modulo unevens the distribution of the numbers in the suite along the {0, 100} axis. Any math brute (Hey Joe!) to confirm ? RACC home - Bots-United: beer, babies & bots (especially the latter) "Learn to think by yourself, else others will do it for you." Last edited by Pierre-Marie Baty; 14-06-2004 at 14:30..