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Topic: Gammln used in betainv
Replies: 1   Last Post: Aug 12, 2012 12:01 PM

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Posts: 3
Registered: 7/30/12
Gammln used in betainv
Posted: Aug 12, 2012 10:39 AM
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Hi there!

The most common implementations of Betainv use a function called "Gammln" which uses an array of numbers called COF:
(76.180091729471457, -86.505320329416776,24.014098240830911, -1.231739572450155,0.12086509738661, -5.395239384953e-06)

If anyone would be so kind as to shed some light on these numbers, e.g. where do they come from and what is their exact purpose in the model, ...or just provide the name of a book which contains this information, I would be most grateful.


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