# gamma(::BigFloat) overflows on Windows

jl> p = big(3.6e13)
3.6e+13

jl> q = 1/big(0.563483398)+1
2.774675178628776489804929213602311938188089959295862682297487944939957397047059

jl> beta(p, q)
NaN


??

On my computer:

jl> gamma(big(3.6e13))
Inf

jl> @which gamma(big(3.6e13))
gamma(x::BigFloat) in SpecialFunctions at C:\Users\dnf\.julia\packages\SpecialFunctions\mFAQ4\src\gamma.jl:578


Hunh. I’m also Julia 1.6, SpecialFunctions 1.3.0. How did you install Julia? On what platform?

I have two different installations: Julia 1.6.0 on Windows 10, and version 1.6.1 on WSL2 under Windows 10 (it’s on the same system).

The ordinary Windows installation:

jl> gamma(big(3.6e13))
Inf


while the one under WSL2:

jl> gamma(big(3.6e13))
7.882861104028365451673058070377064242970022825665897715265241972922672893761775e+472392288679098

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I’ve split this out — would you be willing to file a bug report? You seem uniquely well placed to look at precisely the differences that are causing this.

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Yes, I can do that later today.

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Hey @DNF and @mbauman, thanks for taking so much time to reply to the other thread.

When I opened the other post, I hadn’t foreseen it could help in uncovering a related issue.

I’ll be watching the github issue closely – thanks again for taking out so much time for this

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