Re: Bug #534: factorial function
| От | Janko F. Richter |
|---|---|
| Тема | Re: Bug #534: factorial function |
| Дата | |
| Msg-id | 3C14D5F2.7090502@wallstreet-develop.de обсуждение исходный текст |
| Ответ на | Bug #534: factorial function (pgsql-bugs@postgresql.org) |
| Список | pgsql-bugs |
-------- Original Message -------- Subject: Re: [BUGS] Bug #534: factorial function Date: Mon, 10 Dec 2001 13:28:15 +0100 From: "Janko F. Richter" <j.richter@wallstreet-develop.de> To: Bruce Momjian <pgman@candle.pha.pa.us> References: <200112101121.fBABLgI23940@candle.pha.pa.us> Hallo Bruce, Bruce Momjian wrote: > Yep, 0! sure looks like a bug. We will fix it in 7.3. Not sure about > the double precision. Comments? Perhaps a good idea is to implement the Gamma function additional to factorial function. The gamma function as general function of factorial accepts float/double values as argument and returns double. Maybe a good idea too is to implement a set of standard statistical functions for instance normal, poisson, binomial, etc to get less range overflow while using statistical functions. Perhaps when I'll have time, I will try to write a set of this functions as contrib next year. Thank you and regards , Janko
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