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Random numbers

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I don''t know about fast enough, but I know from my experiments that you can get "more random" with your own. Sometimes you see patterns in the random numbers, you always do, but rand() is rather weak.

Also, rand returns ints, they may want a fast way to return random floats, or ranged random values. Also for hacking purposes, you want to create your own rand, as it is possible to predict random number selection if you have the seed and random number lookup table.

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