Message-ID: <200301092232.XAA12842@pubhealth.ku.dk>
Date: 2003-01-09T23:32:04Z
From: simardr@IRO.UMontreal.CA
Subject: RNG.c: unif_rand, MARSAGLIA_MULTICARRY (PR#2437)
Full_Name: Richard Simard
Version:
OS: Linux
Submission from: (NULL) (132.204.25.139)
In the random number generator MARSAGLIA_MULTICARRY, your algorithm is
different than the one in the original reference that you give in the R manual:
Marsaglia in his post to the mailing list {\it sci.stat.math} on September 29,
1997.
The last line in the R program has a ^
while Marsaglia's algorithm has a +.
This gives very different random number generators.
The full line in RNG.c is:
return ((I1 << 16)^(I2 & 0177777)) * i2_32m1; /* in [0,1) */