Performance of tables slower than built in?

[Danny Arends]

On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
> I am trying to create some fast sin, sinc, and exponential 
> routines to speed up some code by using tables... but it seems 
> it's slower than the function itself?!?
>
> [...]

I'll just leave this here:

https://www.dannyarends.nl/Using%20CTFE%20in%20D%20to%20speed%20up%20Sine%20and%20Cosine?