Yep, 0! sure looks like a bug.  We will fix it in 7.3.  Not sure about
the double precision.  Comments?

---------------------------------------------------------------------------

> Janko Richter ([EMAIL PROTECTED]) reports a bug with a severity of 3
> The lower the number the more severe it is.
> 
> Short Description
> factorial function
> 
> Long Description
> 1. The factorial function returns 0 when the argument is 0. The factorial Funtion is 
>defined as:  factorial(0)=1
> 
> 2. It would be better to define a factorial function returning double precision. The 
>factorial function returning bigint produces false values  with arguments larger then 
>20.
> 
> Notice: I'm using the factorial function for statistical functions (for example 
>poisson distribution)
> 
> Thank you.
> 
> 
> Sample Code
> test=# select factorial(0);
>  factorial 
> -----------
>          0
> (1 row)
> 
> janko=# select factorial(21::bigint);
>       factorial       
> ----------------------
>  -4249290049419214848
> (1 row)
> 
> 
> 
> 
> No file was uploaded with this report
> 
> 
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