Hi Regina,

On Tuesday, 2008-04-01 18:55:35 +0200, Regina Henschel wrote:

> [... Calc and Excel ...]
> GAMMADIST(x;a;b;0) = 1 / (b**a * Γ(a) ) * x**(a-1) * e**(-x/b)

vs.

> [... ODFF ...]
> GAMMADIST(x;α;λ;FALSE()) = λ**α / Γ(α) * x**(α-1) * e**(-λ*x)
>
> I think, that it is no good idea to change the meaning of a function. All 
> old documents would break. I know there is λ=1/b and both definitions are 
> usual in literature, but Calc should stick to one way.

I think that was an oversight and the formula present in ODFF derived
from literature. It should reflect the common implementation instead if
that yields acceptable results. I'll notfiy the OASIS subcommittee and
change the spec if no one objects. Thanks for letting us know.

> @Eike: You see, I'm still working on the subject „special functions in Calc“

I'm very pleased to see that, thank you :-)

  Eike

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