URL:
<http://savannah.gnu.org/bugs/?47193>
Summary: gsl_ran_poisson_pdf with mu=0
Project: GNU Scientific Library
Submitted by: psa
Submitted on: Thu 18 Feb 2016 04:39:48 PM GMT
Category: None
Severity: 3 - Normal
Operating System:
Status: None
Assigned to: None
Open/Closed: Open
Release:
Discussion Lock: Any
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Details:
from trojkan =at= gmail =dot= com
Hi,
I noticed that gsl_ran_poisson_pdf(k, mu) error out if mu=0.0. IMHO a Poisson
distribution with zero mean is a perfectly valid distribition (although it is
not very random), so I find it unexpected that the function doesn't support
it. I suggest to add some code taking care of the special case. Something
like:
if (!mu) {
if (k)
return 0.0
return 1.0
}
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