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Sterten
Posts:
65
Registered:
12/13/04


Re: hypogeometric sum
Posted:
Mar 30, 2008 9:30 AM


for now I precalculate and store the log_factorials in a table. That gave 5fold speedincrease. (I didn't expect this !)
gsl seems to just sum the values  as I did
HypergeometricPFQ  how to calculate it ? I couldn't find it quickly. (How fast ?) Maybe I'll look at it later
I could also precalculate tables[500][500] for k<500,w<500 for each n,r but that requires rearrangement of the data



