Ilya Zakharevich on Fri, 15 Dec 2023 05:12:27 +0100


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Re: Powers too slow? 

On Thu, Dec 14, 2023 at 06:40:37PM -0800, Ilya Zakharevich wrote:
> It seems that some powers take 2x the time they should take:
> 
>   (18:31) gp > localprec(1111111); 1111111^(31/10);
>   time = 453 ms.
>   (18:31) gp > localprec(1111111); 1111111.^(1/10)*1111111^3;
>   time = 234 ms.

Oups, this mixes integers and floating point bases!  However, with pure
integer bases this only becomes slightly more pronounced.

With pure floating point bases there is a weaker 1.75x slowdown.

Sorry,
Ilya