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Unbias a random generator: Difference between revisions
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=={{header|PARI/GP}}==
GP's random number generation is high-quality, using Brent's [http://maths.anu.edu.au/~brent/random.html XORGEN]. Thus this program is slow: the required 400,000 unbiased numbers (about two million calls to <code>random</code>) generated through this bias/unbias scheme take nearly a second.
<lang parigp>randN(N)=!random(N);
unbiased(N)={
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