The code for POISSON should be stable over time. The poisson distribution has a very simple definition that should be easy to test (and we should). I guess the the complexity in the common-math version is there for optimisation reasons. Unless we have better data on how the Excel version of POISSON is generally used, we should probably assume that the commons-math optimisations are appropriate.
In case it's not clear, I'm still in favour of copying over this small amount of code from commons-math and maintaining it independently in poi. --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
