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Math Forum » Discussions » sci.math.* » sci.math.num-analysis.independent

Topic: hypogeometric sum
Replies: 11   Last Post: Mar 31, 2008 3:25 PM

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Sterten

Posts: 65
Registered: 12/13/04
Re: hypogeometric sum
Posted: Mar 30, 2008 9:30 AM
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for now I precalculate and store the log_factorials in a table.
That gave 5-fold speed-increase. (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

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