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Date:         Mon, 13 Mar 2017 09:52:26 -0400
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From: Bruno Le Floch <blflatex@GMAIL.COM>
Subject: Re: Two more (simple) functions for l3fp
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On 03/11/2017 12:40 PM, Benedikt Vitecek wrote:
>> Concerning Gamma, the main reason I haven't implemented it yet is that
>> it requires determining some magic constants that were only given to me
>> for a lower precision than what I need (10 digits instead of 16).
> 
> For the Gamma function the book
> 
>   „Numerical Recipes: The art of Scientific Computing“ (3rd edition);
>   William H. Press, Saul A. Teukolsky, William T. Vetterling, Brian P.
> Flannery;
>   Cambridge University Press
> 
> might be of interest as it describes the implementation of a Gamma
> function with error smaller than < 1e-15.
> 
> Ben

Thanks for the precise literature pointer; the book is available in my
library (and I found the specific pages on Google books in any case).
I'll look into it.

Best,

Bruno