[RC5] What CPU works best?
oetting at gldmutt.cr.usgs.gov
Tue Sep 7 14:34:17 EDT 1999
At 1:24 -0400 9/7/1999, Michael K. Weise wrote:
>Hmm. . . I suppose it's only a matter of time until a d.net project comes
>along that needs FP math. Then AMD CPUs will have their chance to shine in
The "Great Internet Mersenne Prime Search" (GIMPS) computes the function:
M_p = 2^p - 1;
for (i = 2, S = 4; i < p, i++) S = (S * S - 2) mod M_p;
if (S == 0) printf("M_p is prime");
using sine, cosine, square root and a few other floating point functions
faster than using integer arithmetic.
Is this the project you are looking for?
Dan Oetting <dan_oetting at comug.com>
PowerPC 603/604/750 -- Still the fastest RC5 core on the net
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